How long is the flight from Ottawa to London?

Departing from Ottawa to London will take you 11h 05m. The distance between Ottawa and London is about 5375 km. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines flying from Ottawa to London round-trip?

Our cheapest airline available from Ottawa to London is Virgin Atlantic. Our recent data shows that you can find tickets from as low as C$ 484 on this airline. Additional options worth looking into are Air Transat and Air France, starting at C$ 684 and C$ 778 round-trip. You may be able to fly from Ottawa to London for 53% less than the average price by searching for these airlines.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Ottawa to London?

Most travellers choose Ottawa - London Heathrow, Ottawa - London Gatwick or Ottawa - London City when deciding on the best route from Ottawa to London.

What are the cheapest flights from Ottawa to London?

The cheapest flight price from Ottawa to London is C$ 762. On average you can expect to pay C$ 1,551. The most popular route, (Ottawa - London Heathrow), can usually be booked for C$ 1,013.

What are the most reliable airlines from Ottawa to London?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ottawa to London on time: United Airlines (59%), Air Canada (59%), Aegean Airlines (59%).

What are the most popular airlines that fly from Ottawa to London?

Before booking your flight from Ottawa to London check out the most popular airlines for this route: Air Canada, Air Transat or Lufthansa.

What airport do you fly from for flights from Ottawa to London?

Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to London. You should not have trouble finding flights to London from Ottawa; the airport handles an average of 1 outbound flight to London per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Ottawa airport to London. It is only a 10.6 km journey to Ottawa (YOW) from Ottawa’s city centre.

Can I find deals for flights from Ottawa to London that include hotel bookings?

Yes. In addition to deals on Ottawa to London flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ottawa to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to London.

Can I find deals for business class flights from Ottawa to London?

Yes. Cheapflights offers flight deals from Ottawa to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 449+ Cheap Flights from Ottawa to London

Cheapflights Tip: The best prices from Ottawa to London are usually found in September or May, booked 74 days in advance, depart on a Friday or Tuesday and return on a Friday

Cheap flight deals from Ottawa to London

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Ottawa to London
Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Thu 5/119:00 a.m. -

2 stops31h 10m

Thu 12/117:05 p.m. -

3 stops24h 02m

Deal found 26/10C$ 906

Thu 5/119:00 a.m. -

2 stops32h 20m

Thu 12/115:00 p.m. -

3 stops26h 07m

Deal found 26/10C$ 906

Fri 13/118:30 p.m. -

1 stop9h 50m

Sun 15/1111:05 a.m. -

2 stops33h 52m

Deal found 27/10C$ 944

Tue 10/116:00 a.m. -

1 stop24h 20m

Thu 12/1111:05 a.m. -

2 stops32h 02m

Deal found 29/10C$ 971

Mon 9/115:40 p.m. -

2 stops21h 00m

Mon 16/117:00 a.m. -

2 stops15h 20m

Deal found 29/10C$ 992

Mon 9/115:40 p.m. -

2 stops22h 20m

Mon 16/117:20 a.m. -

2 stops15h 00m

Deal found 29/10C$ 1,003

Mon 23/115:40 p.m. -

2 stops22h 20m

Mon 30/117:20 a.m. -

2 stops17h 27m

Deal found 26/10C$ 1,011

Tue 24/115:40 p.m. -

2 stops23h 20m

Tue 1/127:00 a.m. -

2 stops16h 45m

Deal found 27/10C$ 1,015

Mon 9/115:40 p.m. -

2 stops22h 20m

Fri 20/117:00 a.m. -

2 stops20h 32m

Deal found 28/10C$ 1,018

Mon 23/115:40 p.m. -

2 stops18h 00m

Mon 30/117:55 a.m. -

2 stops16h 52m

Deal found 26/10C$ 1,020

Mon 9/115:40 p.m. -

2 stops21h 00m

Fri 20/117:00 a.m. -

2 stops20h 32m

Deal found 28/10C$ 1,025

Sat 21/1110:50 a.m. -

2 stops21h 20m

Wed 2/124:45 p.m. -

3 stops26h 22m

Deal found 27/10C$ 1,027

Best flights from Ottawa to London
Discover carefully curated flight deals from Ottawa to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Wed 10/22:55 p.m. -

3 stops26h 35m

Thu 18/26:00 a.m. -

2 stops21h 32m

Deal found 26/10C$ 938

Sat 13/25:40 p.m. -

1 stop11h 05m

Wed 3/311:40 a.m. -

1 stop11h 15m

Deal found 28/10C$ 955

Sat 7/114:46 p.m. -

1 stop14h 14m

Mon 16/111:35 p.m. -

1 stop29h 34m

Deal found 26/10C$ 1,179

Fri 27/115:10 p.m. -

1 stop17h 35m

Fri 4/1210:00 a.m. -

1 stop10h 05m

Deal found 28/10C$ 1,217

Tue 27/45:10 p.m. -

1 stop17h 50m

Thu 6/59:55 a.m. -

1 stop10h 05m

Deal found 30/10C$ 1,262

Sat 12/122:00 p.m. -

1 stop13h 30m

Mon 14/126:00 p.m. -

1 stop12h 40m

Deal found 28/10C$ 1,375

Tue 29/125:40 p.m. -

1 stop11h 05m

Thu 7/111:40 a.m. -

1 stop11h 14m

Deal found 26/10C$ 1,432

Sat 20/32:00 p.m. -

2 stops15h 50m

Fri 2/410:40 a.m. -

2 stops19h 56m

Deal found 26/10C$ 1,565

Sun 14/25:40 p.m. -

1 stop11h 05m

Wed 3/311:40 a.m. -

1 stop11h 15m

Deal found 28/10C$ 955

Mon 23/115:40 p.m. -

2 stops22h 20m

Mon 30/117:20 a.m. -

2 stops17h 27m

Deal found 26/10C$ 1,011

Sat 13/25:40 p.m. -

1 stop11h 05m

Mon 1/311:40 a.m. -

1 stop11h 15m

Deal found 28/10C$ 992

Mon 9/115:40 p.m. -

2 stops22h 20m

Fri 20/117:00 a.m. -

2 stops20h 32m

Deal found 28/10C$ 1,018

Tue 16/21:45 p.m. -

1 stop15h 00m

Fri 26/211:40 a.m. -

1 stop11h 34m

Deal found 28/10C$ 992

Wed 2/126:00 a.m. -

1 stop10h 20m

Wed 16/124:20 p.m. -

2 stops25h 51m

Deal found 28/10C$ 1,225

Thu 26/119:00 a.m. -

2 stops26h 15m

Thu 3/127:00 a.m. -

2 stops20h 32m

Deal found 29/10C$ 1,052

Thu 5/115:10 p.m. -

2 stops15h 40m

Thu 12/1111:45 a.m. -

2 stops16h 55m

Deal found 26/10C$ 1,306

Fri 12/25:40 p.m. -

1 stop11h 05m

Wed 3/311:40 a.m. -

1 stop11h 15m

Deal found 28/10C$ 992

Sat 5/1210:30 a.m. -

2 stops14h 50m

Sat 12/124:20 p.m. -

2 stops25h 51m

Deal found 30/10C$ 1,228

Thu 19/115:40 p.m. -

2 stops17h 35m

Thu 26/116:00 p.m. -

3 stops25h 07m

Deal found 28/10C$ 1,056

Thu 12/1110:50 a.m. -

2 stops24h 25m

Wed 18/117:00 a.m. -

2 stops16h 45m

Deal found 29/10C$ 1,064

Fri 23/47:35 p.m. -

2 stops15h 05m

Sun 25/410:40 a.m. -

2 stops35h 36m

Deal found 28/10C$ 1,569

Mon 14/129:45 a.m. -

1 stop15h 55m

Mon 21/1212:50 p.m. -

2 stops31h 17m

Deal found 30/10C$ 1,415

Sat 21/115:40 p.m. -

2 stops18h 15m

Wed 2/126:35 p.m. -

3 stops24h 32m

Deal found 27/10C$ 1,067

Wed 30/129:45 a.m. -

1 stop15h 55m

Fri 8/14:20 p.m. -

2 stops25h 51m

Deal found 26/10C$ 1,445

Wed 11/112:00 p.m. -

3 stops26h 05m

Tue 17/119:45 p.m. -

2 stops29h 47m

Deal found 27/10C$ 1,103

Thu 5/116:00 a.m. -

1 stop10h 20m

Thu 12/1112:45 p.m. -

1 stop14h 11m

Deal found 27/10C$ 1,460

Fri 27/112:55 p.m. -

2 stops24h 30m

Fri 4/127:00 a.m. -

2 stops31h 47m

Deal found 28/10C$ 1,126

Fri 12/210:50 a.m. -

2 stops29h 15m

Sun 21/29:45 p.m. -

2 stops26h 00m

Deal found 26/10C$ 1,141

Mon 26/46:25 p.m. -

2 stops15h 00m

Sat 22/59:00 a.m. -

2 stops13h 35m

Deal found 26/10C$ 1,200

Thu 5/115:10 p.m. -

1 stop18h 25m

Thu 12/1110:00 a.m. -

2 stops18h 40m

Deal found 28/10C$ 1,260

Find flight deals from Ottawa to London

Round-trip from	C$ 891
One-way from	C$ 449
Popular in	December
Cheapest in	September
Average price	C$ 965
Good round-trip deal	C$ 1,255 or less
Good one-way deal	C$ 1,105 or less

Air Transat
6/4-27/4
2 total stops
30h 22m total
Ottawa to London

Search Deals

WestJet
8/12-31/12
1 total stop
25h 40m total
Ottawa to London

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (C$ 109 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 36 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from Ottawa to London (LON).

Search Deals

Price to beat on a one-way flight from Ottawa to London (LON).

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Tue 8/12

6:10 a.m.-12:50 p.m.

1 stop25h 40m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 449

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Thu 21/1

6:55 p.m.-12:50 p.m.

1 stop36h 55m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 466

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Tue 8/12

7:00 a.m.-12:50 p.m.

2 stops24h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 478

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Mon 25/1

5:30 a.m.-12:50 p.m.

3 stops26h 20m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 485

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Mon 7/12

7:00 a.m.-12:50 p.m.

2 stops24h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 513

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Thu 26/11

5:30 a.m.-12:50 p.m.

3 stops26h 20m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 520

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Wed 2/12

2:00 p.m.-12:50 p.m.

2 stops17h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 568

OttawaLondon

YOW Ottawa - LGW London Gatwick

YOWLGW

Ottawa

Mon 25/1

10:35 a.m.-9:15 a.m.

2 stops17h 40m

London Gatwick

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 579

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Thu 26/11

10:30 a.m.-11:40 a.m.

3 stops44h 10m

London Luton

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 579

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Sun 24/1

10:35 a.m.-9:10 a.m.

2 stops17h 35m

London Luton

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 580

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/10

Showing 1-10 of 59 resultsSorted by cheapest first

...

Best time to book a flight from Ottawa to London

Have a flexible travel schedule? Discover the best time to fly to London from Ottawa with our price prediction graph.

YOW-LON

YOW-LHR

YOW-LGW

YOW-LTN

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ottawa to London

YOW-LON

YOW-LHR

YOW-LGW

YOW-LTN

What is the cheapest month to book a flight from Ottawa to London?

Currently, September is the cheapest month in which you can book a flight from Ottawa to London (average of C$ 848). Flying from Ottawa to London in December is currently the most expensive (average of C$ 1,383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YOW to LON?

When flying from Ottawa to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Ottawa to London?

Airfare is below average for this route at the moment.

Ottawa to London flights typically cost between C$ 933 and C$ 1,210 in April.
The cheapest round-trip price found within the last 5 days was C$ 891 on Air Transat (6 Apr-27 Apr).

What’s the top layover airport for flights from Ottawa to London?

Montreal (YUL) – chosen by Cheapflights users on 35% of one-stop itineraries from Ottawa to London on Cheapflights.

What’s the cheapest layover airport for flights from Ottawa to London?

Toronto (YYZ) is the most affordable 1-stop option, with an average round-trip price of C$ 842.

What’s the fastest layover option from Ottawa to London?

Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 9h 09m.

Which airport typically offers the quickest layover for flights from Ottawa to London?

Flights via Montreal (YUL) offer the fastest connection on this route, with an average layover time of 1h 45m.

How often are flights from Ottawa to London delayed?

About 28% of weekly flights between Ottawa and London have experienced delays in the past year, with the average delay time being 132 minutes.

What is the most punctual flight time for Ottawa to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ottawa to London flights?

Over the past year, Air Transat has had the lowest number of delays on this route, with just 20% of flights being delayed.

How far ahead should I book a flight from Ottawa to London?

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing London

Check out reviews from past customers who have flown with Porter Airlines,Air Transat, andVirgin Atlantic from Ottawa to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

467 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Porter Airlines

8.0

Very good

467 reviews

Porter Airlines

8.0

Very good

467 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Air Transat

7.7

Good

584 reviews

Porter Airlines

8.0

Very good

467 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Virgin Atlantic

7.5

Good

699 reviews

Porter Airlines

8.0

Very good

467 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Air Canada

7.1

Good

11,834 reviews

Porter Airlines

8.0

Very good

467 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Lufthansa

6.8

Okay

8,300 reviews

Porter Airlines

8.0

Very good

467 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Related info for your journey

What airport do you fly from for flights from Ottawa to London?
Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to London. You should not have trouble finding flights to London from Ottawa; the airport handles an average of 1 outbound flight to London per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Ottawa airport to London. It is only a 10.6 km journey to Ottawa (YOW) from Ottawa’s city centre.
How long is the flight from Ottawa to London?
Departing from Ottawa to London will take you 11h 05m. The distance between Ottawa and London is about 5375 km. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from Ottawa to London round-trip?
Our cheapest airline available from Ottawa to London is Virgin Atlantic. Our recent data shows that you can find tickets from as low as C$ 484 on this airline. Additional options worth looking into are Air Transat and Air France, starting at C$ 684 and C$ 778 round-trip. You may be able to fly from Ottawa to London for 53% less than the average price by searching for these airlines.
What are the most popular routes from Ottawa to London?
Most travellers choose Ottawa - London Heathrow, Ottawa - London Gatwick or Ottawa - London City when deciding on the best route from Ottawa to London.
What are the most reliable airlines from Ottawa to London?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ottawa to London on time: United Airlines (59%), Air Canada (59%), Aegean Airlines (59%).
What are the cheapest flights from Ottawa to London?
The cheapest flight price from Ottawa to London is C$ 762. On average you can expect to pay C$ 1,551. The most popular route, (Ottawa - London Heathrow), can usually be booked for C$ 1,013.
Can I find deals for flights from Ottawa to London that include hotel bookings?
Yes. In addition to deals on Ottawa to London flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ottawa to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to London.
Can I find deals for business class flights from Ottawa to London?
Yes. Cheapflights offers flight deals from Ottawa to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ottawa to London?
Currently, September is the cheapest month in which you can book a flight from Ottawa to London (average of C$ 848). Flying from Ottawa to London in December is currently the most expensive (average of C$ 1,383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Gatwick

Romford

Twickenham

Ilford

Bromley

Sutton

Luton

Kingston upon Thames

Slough

Marlow

Cobham

Hounslow

Wembley

Watford

High Wycombe

Browse thousands of different options on Cheapflights for your next trip

Airlines

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Complete your trip

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Flights by cabin class

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Other flights from Ottawa

Popular flights

Top destinations

Fly from Ottawa to London on these airlines

Air Canada flights from Ottawa to London

Air Transat flights from Ottawa to London

Lufthansa flights from Ottawa to London

Top 5 airlines flying from Ottawa to London

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	CheapestC$ 484	AverageC$ 943	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air Transat	CheapestC$ 684	AverageC$ 812	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air France	CheapestC$ 778	AverageC$ 1,039	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Canada	CheapestC$ 907	AverageC$ 1,135	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	CheapestC$ 920	AverageC$ 1,147	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ottawa to London?

Cheapflights helps you search for flights from Ottawa to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to London?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ottawa to London for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ottawa to London with no change fees?

Need flexible booking options for your flight to London from Ottawa? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to London become cheaper?

Yes! Start tracking prices for Ottawa to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from Ottawa to London from C$ 449

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ottawa to London

Cheapest flights from Ottawa to LondonExplore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from Ottawa to LondonDiscover carefully curated flight deals from Ottawa to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Discover carefully curated flight deals from Ottawa to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from Ottawa to LondonExplore direct flight options from Ottawa to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Explore direct flight options from Ottawa to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from Ottawa to LondonDiscover last-minute flight deals from Ottawa to London. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Ottawa to London. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Ottawa to LondonSearch for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Search for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Find flight deals from Ottawa to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ottawa to London that are best for you.

Best time to book a flight from Ottawa to London

Have a flexible travel schedule? Discover the best time to fly to London from Ottawa with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Ottawa to London?

What is the cheapest time of day to fly from YOW to LON?

Find hourly flight availability from Ottawa to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2026.

When flying from Ottawa to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Ottawa to London?

Airfare is below average for this route at the moment.

Ottawa to London flights typically cost between C$ 933 and C$ 1,210 in April.The cheapest round-trip price found within the last 5 days was C$ 891 on Air Transat (6 Apr-27 Apr).

What’s the top layover airport for flights from Ottawa to London?

Share of one-stop round-trip flights from Ottawa to London chosen by Cheapflights users in the past 12 months, using the same layover each way.

Montreal (YUL) – chosen by Cheapflights users on 35% of one-stop itineraries from Ottawa to London on Cheapflights.

What’s the cheapest layover airport for flights from Ottawa to London?

Average round-trip fare for 1-stop flights from Ottawa to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Toronto (YYZ) is the most affordable 1-stop option, with an average round-trip price of C$ 842.

What’s the fastest layover option from Ottawa to London?

Shortest average travel time for 1-stop one-way flights from Ottawa to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 9h 09m.

Which airport typically offers the quickest layover for flights from Ottawa to London?

Average layover duration for 1-stop one-way flights from Ottawa to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Montreal (YUL) offer the fastest connection on this route, with an average layover time of 1h 45m.

How often are flights from Ottawa to London delayed?

About 28% of weekly flights between Ottawa and London have experienced delays in the past year, with the average delay time being 132 minutes.

What is the most punctual flight time for Ottawa to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ottawa to London flights?

Over the past year, Air Transat has had the lowest number of delays on this route, with just 20% of flights being delayed.

How far ahead should I book a flight from Ottawa to London?

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing London

Check out reviews from past customers who have flown with Porter Airlines,Air Transat, andVirgin Atlantic from Ottawa to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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How long is the flight from Ottawa to London?

What are the cheapest airlines flying from Ottawa to London round-trip?

What are the most popular routes from Ottawa to London?

What are the most reliable airlines from Ottawa to London?

What are the cheapest flights from Ottawa to London?

Can I find deals for flights from Ottawa to London that include hotel bookings?

How can I find direct flights from Ottawa to London?

Can I find deals for business class flights from Ottawa to London?

What is the cheapest month to book a flight from Ottawa to London?

Travelling to a place near London?

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Fly from Ottawa to London on these airlines

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Alternative routes for Ottawa to London

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Complete your trip

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Direct flights to England

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Cheapest flights from Ottawa to London
Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.

Best flights from Ottawa to London
Discover carefully curated flight deals from Ottawa to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Direct flights from Ottawa to London
Explore direct flight options from Ottawa to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.

Last-minute flights from Ottawa to London
Discover last-minute flight deals from Ottawa to London. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Ottawa to London
Search for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Ottawa to London flights typically cost between C$ 933 and C$ 1,210 in April.
The cheapest round-trip price found within the last 5 days was C$ 891 on Air Transat (6 Apr-27 Apr).