How long is the flight from Ottawa to London?

Departing from Ottawa to London will take you 10h 50m. The distance between Ottawa and London is about 5375 km.

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$ 493 on this airline. Additional options worth looking into are Air Transat and Air France, starting at C$ 696 and C$ 792 round-trip. You may be able to fly from Ottawa to London for 52% 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$ 921. On average you can expect to pay C$ 1,325. The most popular route, (Ottawa - London Heathrow), can usually be booked for C$ 901.

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 (51%), Air Canada (50%), Aegean Airlines (50%).

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$ 431+ Cheap Flights from Ottawa to London

Cheapflights Tip: The best prices from Ottawa to London are usually found in September or February, booked 74 days in advance, depart on a Tuesday or Friday 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 8 October 2026.

Thu 15/106:55 p.m. -

Nonstop6h 35m

Wed 21/102:10 p.m. -

Nonstop7h 55m

Deal found 6/10C$ 839

Mon 12/1010:00 a.m. -

1 stop20h 50m

Wed 14/1011:05 a.m. -

2 stops31h 53m

Deal found 4/10C$ 863

Wed 11/112:00 p.m. -

3 stops17h 55m

Tue 17/119:30 p.m. -

3 stops21h 37m

Deal found 7/10C$ 867

Mon 12/102:00 p.m. -

2 stops15h 00m

Wed 21/1012:40 p.m. -

1 stop11h 10m

Deal found 4/10C$ 884

Sun 11/102:35 p.m. -

1 stop10h 55m

Wed 14/102:05 p.m. -

1 stop13h 05m

Deal found 4/10C$ 886

Sun 11/106:00 a.m. -

1 stop19h 30m

Thu 15/109:30 a.m. -

Nonstop7h 55m

Deal found 4/10C$ 887

Mon 12/109:55 a.m. -

2 stops19h 05m

Mon 19/109:30 a.m. -

Nonstop7h 55m

Deal found 4/10C$ 890

Wed 11/112:00 p.m. -

3 stops21h 10m

Tue 17/117:50 p.m. -

3 stops23h 17m

Deal found 7/10C$ 900

Mon 9/115:10 p.m. -

3 stops18h 55m

Mon 16/115:45 p.m. -

3 stops27h 03m

Deal found 3/10C$ 923

Sat 14/119:00 a.m. -

2 stops22h 20m

Thu 19/119:00 p.m. -

3 stops27h 45m

Deal found 6/10C$ 927

Sun 25/106:25 p.m. -

1 stop17h 20m

Sun 1/1110:00 a.m. -

1 stop10h 05m

Deal found 6/10C$ 933

Wed 18/115:10 p.m. -

1 stop17h 35m

Wed 25/1110:00 a.m. -

1 stop10h 00m

Deal found 4/10C$ 934

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 8 October 2026.

Sun 8/115:10 p.m. -

1 stop10h 50m

Fri 13/1110:00 a.m. -

1 stop10h 00m

Deal found 5/10C$ 934

Fri 6/115:10 p.m. -

1 stop10h 50m

Sun 6/1210:00 a.m. -

1 stop10h 00m

Deal found 3/10C$ 964

Wed 4/119:55 a.m. -

3 stops25h 15m

Wed 11/118:30 a.m. -

2 stops19h 02m

Deal found 6/10C$ 984

Tue 3/114:46 p.m. -

1 stop14h 14m

Fri 6/1110:25 a.m. -

1 stop32h 44m

Deal found 5/10C$ 1,062

Wed 3/25:40 p.m. -

1 stop11h 05m

Tue 16/211:40 a.m. -

1 stop15h 35m

Deal found 6/10C$ 1,098

Wed 3/25:40 p.m. -

1 stop11h 05m

Fri 12/211:40 a.m. -

1 stop15h 35m

Deal found 6/10C$ 1,357

Fri 20/115:25 p.m. -

1 stop15h 20m

Fri 27/118:55 a.m. -

1 stop11h 05m

Deal found 6/10C$ 934

Tue 2/212:30 p.m. -

3 stops20h 15m

Thu 11/27:45 a.m. -

2 stops17h 07m

Deal found 5/10C$ 990

Wed 18/115:10 p.m. -

1 stop12h 20m

Wed 25/116:20 a.m. -

1 stop13h 40m

Deal found 4/10C$ 934

Fri 6/115:10 p.m. -

2 stops13h 55m

Sun 6/126:30 a.m. -

2 stops13h 30m

Deal found 7/10C$ 1,048

Tue 20/106:05 a.m. -

1 stop10h 20m

Fri 30/104:20 p.m. -

2 stops25h 49m

Deal found 3/10C$ 1,062

Sun 8/115:40 p.m. -

2 stops14h 10m

Fri 13/119:15 p.m. -

3 stops21h 52m

Deal found 5/10C$ 1,007

Tue 20/105:10 p.m. -

1 stop12h 20m

Fri 30/106:20 a.m. -

1 stop13h 45m

Deal found 3/10C$ 936

Sat 30/15:40 p.m. -

1 stop11h 05m

Tue 16/211:40 a.m. -

1 stop15h 35m

Deal found 6/10C$ 1,159

Thu 26/116:15 a.m. -

1 stop20h 40m

Sat 30/16:50 a.m. -

2 stops17h 37m

Deal found 3/10C$ 1,067

Tue 9/35:10 p.m. -

2 stops12h 35m

Thu 15/46:30 a.m. -

2 stops13h 30m

Deal found 7/10C$ 1,067

Fri 6/115:10 p.m. -

2 stops13h 55m

Sun 6/126:20 a.m. -

1 stop13h 40m

Deal found 5/10C$ 1,007

Wed 11/115:10 p.m. -

1 stop17h 35m

Tue 17/114:45 p.m. -

1 stop27h 15m

Deal found 5/10C$ 951

Sun 31/15:10 p.m. -

1 stop10h 50m

Sat 13/210:00 a.m. -

1 stop10h 00m

Deal found 6/10C$ 1,074

Wed 11/115:10 p.m. -

1 stop12h 20m

Tue 17/1110:00 a.m. -

2 stops18h 40m

Deal found 5/10C$ 1,008

Wed 3/25:40 p.m. -

1 stop11h 05m

Sun 14/211:40 a.m. -

1 stop15h 35m

Deal found 6/10C$ 1,357

Wed 11/115:10 p.m. -

1 stop20h 10m

Tue 17/115:35 p.m. -

1 stop26h 25m

Deal found 5/10C$ 953

Wed 11/1112:30 p.m. -

3 stops17h 00m

Sun 15/117:00 a.m. -

2 stops31h 47m

Deal found 4/10C$ 1,010

Thu 25/35:40 p.m. -

1 stop12h 05m

Mon 29/312:40 p.m. -

1 stop14h 35m

Deal found 4/10C$ 1,357

Fri 23/107:00 a.m. -

1 stop22h 45m

Sat 31/1011:40 a.m. -

1 stop14h 35m

Deal found 8/10C$ 1,471

Mon 9/1110:50 a.m. -

2 stops18h 45m

Sat 14/115:15 p.m. -

3 stops25h 52m

Deal found 5/10C$ 1,014

Wed 4/115:40 p.m. -

2 stops22h 55m

Fri 13/117:00 a.m. -

3 stops19h 52m

Deal found 3/10C$ 1,015

Mon 2/116:10 p.m. -

2 stops21h 50m

Mon 9/117:20 a.m. -

2 stops15h 00m

Deal found 5/10C$ 1,028

Tue 10/1110:50 a.m. -

2 stops30h 10m

Sat 14/115:15 p.m. -

3 stops25h 52m

Deal found 6/10C$ 1,054

Mon 2/116:00 a.m. -

2 stops27h 25m

Wed 11/116:20 a.m. -

2 stops16h 00m

Deal found 3/10C$ 1,057

Find flight deals from Ottawa to London

Round-trip from	C$ 867
One-way from	C$ 431
Popular in	December
Cheapest in	September
Average price	C$ 1,017
Good round-trip deal	C$ 707 or less
Good one-way deal	C$ 444 or less

11/11-17/11
6 total stops
39h 32m total
Ottawa to London

Search Deals

WestJet
26/11-31/12
1 total stop
15h 35m total
Ottawa to London

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (C$ 37 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 33 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

Sat 21/11

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$ 494

OttawaLondon

YOW Ottawa - STN London Stansted

YOWSTN

Ottawa

Fri 23/10

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

3 stops31h 00m

London Stansted

Wed 31/12

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

Nonstop0h 00m

C$ 496

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Fri 23/10

6:50 a.m.-9:00 a.m.

2 stops45h 10m

London Luton

Wed 31/12

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

Nonstop0h 00m

C$ 507

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Tue 20/10

8:55 p.m.-3:00 p.m.

2 stops13h 05m

London Heathrow

Wed 31/12

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

Nonstop0h 00m

C$ 508

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Fri 16/10

6:50 a.m.-8:30 a.m.

2 stops44h 40m

London Luton

Wed 31/12

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

Nonstop0h 00m

C$ 510

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Tue 3/11

6:10 a.m.-10:30 a.m.

2 stops47h 20m

London Luton

Wed 31/12

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

Nonstop0h 00m

C$ 521

OttawaLondon

YOW Ottawa - LGW London Gatwick

YOWLGW

Ottawa

Sat 21/11

6:55 p.m.-7:30 a.m.

2 stops55h 35m

London Gatwick

Wed 31/12

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

Nonstop0h 00m

C$ 528

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Tue 13/10

8:55 p.m.-10:25 p.m.

3 stops20h 30m

London Luton

Wed 31/12

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

Nonstop0h 00m

C$ 530

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Sat 21/11

4:20 p.m.-2:35 p.m.

2 stops41h 15m

London Luton

Wed 31/12

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

Nonstop0h 00m

C$ 530

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Sat 24/10

6:25 p.m.-11:40 p.m.

2 stops24h 15m

London Luton

Wed 31/12

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

Nonstop0h 00m

C$ 537

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 60 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-STN

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-STN

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$ 856). Flying from Ottawa to London in December is currently the most expensive (average of C$ 1,363). 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$ 896 and C$ 1,179 in November.
The cheapest round-trip price found within the last 5 days was C$ 867 on Multiple Airlines (11 Nov-17 Nov).

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

Montreal (YUL) – chosen by Cheapflights users on 34% 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$ 857.

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

Flights via Halifax (YHZ) have the shortest average one-way travel time for 1-stop routes: 9h 00m.

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

Flights via Halifax (YHZ) offer the fastest connection on this route, with an average layover time of 1h 20m.

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

468 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

468 reviews

Porter Airlines

8.0

Very good

468 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Air Transat

7.7

Good

583 reviews

Porter Airlines

8.0

Very good

468 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Virgin Atlantic

7.4

Good

693 reviews

Porter Airlines

8.0

Very good

468 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Air Canada

7.1

Good

11,738 reviews

Porter Airlines

8.0

Very good

468 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Lufthansa

6.8

Okay

8,266 reviews

Porter Airlines

8.0

Very good

468 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 10h 50m. The distance between Ottawa and London is about 5375 km.
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$ 493 on this airline. Additional options worth looking into are Air Transat and Air France, starting at C$ 696 and C$ 792 round-trip. You may be able to fly from Ottawa to London for 52% 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 (51%), Air Canada (50%), Aegean Airlines (50%).
What are the cheapest flights from Ottawa to London?
The cheapest flight price from Ottawa to London is C$ 921. On average you can expect to pay C$ 1,325. The most popular route, (Ottawa - London Heathrow), can usually be booked for C$ 901.
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$ 856). Flying from Ottawa to London in December is currently the most expensive (average of C$ 1,363). 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

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$ 493	AverageC$ 967	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air Transat	CheapestC$ 696	AverageC$ 826	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air France	CheapestC$ 792	AverageC$ 1,057	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Canada	CheapestC$ 924	AverageC$ 1,145	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	CheapestC$ 937	AverageC$ 1,168	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$ 431

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 26/11. 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 8 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 8 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 8 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 8 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 8 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 8 October 2026.

Last-minute flights from Ottawa to LondonDiscover last-minute flight deals from Ottawa to London. Data last updated 8 October 2026 and is based on user searches.

Discover last-minute flight deals from Ottawa to London. Data last updated 8 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 8 October 2026.

Search for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 8 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 8 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$ 896 and C$ 1,179 in November.The cheapest round-trip price found within the last 5 days was C$ 867 on Multiple Airlines (11 Nov-17 Nov).

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 34% 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$ 857.

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 Halifax (YHZ) have the shortest average one-way travel time for 1-stop routes: 9h 00m.

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 Halifax (YHZ) offer the fastest connection on this route, with an average layover time of 1h 20m.

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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What are the cheapest flights from Ottawa to London?

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

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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 8 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 8 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 8 October 2026.

Last-minute flights from Ottawa to London
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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 8 October 2026.

Ottawa to London flights typically cost between C$ 896 and C$ 1,179 in November.
The cheapest round-trip price found within the last 5 days was C$ 867 on Multiple Airlines (11 Nov-17 Nov).