How long is the flight from Ottawa to London?

Departing from Ottawa to London will take you 7h 15m. 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$ 482 on this airline. Additional options worth looking into are Air Transat and Air France, starting at C$ 682 and C$ 776 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 City or Ottawa - London Gatwick 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$ 899. On average you can expect to pay C$ 1,240. The most popular route, (Ottawa - London Heathrow), can usually be booked for C$ 888.

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: Air Canada (41%), Aegean Airlines (41%), Austrian Airlines (41%).

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$ 351+ 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 Sunday

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 17 September 2026.

Sun 27/97:40 p.m. -

Nonstop7h 15m

Fri 2/109:40 a.m. -

Nonstop8h 00m

Deal found 12/9C$ 711

Tue 22/97:40 p.m. -

Nonstop7h 15m

Sun 4/1011:35 a.m. -

1 stop11h 00m

Deal found 11/9C$ 717

Thu 1/107:00 a.m. -

1 stop22h 45m

Sun 11/109:40 a.m. -

Nonstop8h 00m

Deal found 15/9C$ 720

Mon 21/910:00 a.m. -

1 stop16h 55m

Mon 28/912:40 p.m. -

1 stop16h 45m

Deal found 16/9C$ 721

Sun 4/104:00 p.m. -

1 stop13h 45m

Sun 11/109:40 a.m. -

Nonstop8h 00m

Deal found 12/9C$ 724

Tue 22/97:40 p.m. -

Nonstop7h 15m

Sat 26/99:40 a.m. -

1 stop27h 25m

Deal found 12/9C$ 725

Thu 1/104:00 p.m. -

1 stop10h 55m

Sun 4/1011:35 a.m. -

1 stop11h 00m

Deal found 12/9C$ 728

Sat 26/910:00 a.m. -

1 stop19h 45m

Sun 4/109:40 a.m. -

Nonstop8h 00m

Deal found 14/9C$ 729

Sun 27/92:15 p.m. -

1 stop14h 35m

Sun 4/109:40 a.m. -

Nonstop8h 00m

Deal found 16/9C$ 734

Wed 18/115:30 a.m. -

2 stops33h 00m

Sat 28/1112:15 p.m. -

2 stops17h 29m

Deal found 13/9C$ 835

Fri 6/115:30 a.m. -

2 stops33h 00m

Fri 20/1112:15 p.m. -

2 stops17h 29m

Deal found 13/9C$ 845

Mon 28/98:50 a.m. -

1 stop31h 10m

Fri 2/1012:40 p.m. -

2 stops26h 38m

Deal found 12/9C$ 858

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 17 September 2026.

Fri 16/107:40 p.m. -

Nonstop7h 15m

Fri 23/109:40 a.m. -

Nonstop8h 00m

Deal found 12/9C$ 852

Tue 13/103:10 p.m. -

2 stops16h 15m

Tue 20/102:45 p.m. -

3 stops33h 25m

Deal found 14/9C$ 865

Thu 15/105:50 p.m. -

1 stop11h 10m

Wed 21/102:05 p.m. -

1 stop10h 40m

Deal found 12/9C$ 911

Sun 17/15:10 p.m. -

1 stop10h 50m

Fri 29/110:00 a.m. -

1 stop10h 00m

Deal found 14/9C$ 950

Fri 6/115:10 p.m. -

1 stop10h 50m

Sun 6/1210:00 a.m. -

1 stop10h 00m

Deal found 15/9C$ 966

Sat 10/106:00 a.m. -

2 stops18h 55m

Fri 16/104:40 p.m. -

1 stop12h 14m

Deal found 12/9C$ 973

Wed 14/104:00 p.m. -

2 stops20h 25m

Tue 20/109:15 a.m. -

2 stops14h 55m

Deal found 14/9C$ 1,118

Tue 13/1010:00 a.m. -

1 stop19h 45m

Sat 17/109:40 a.m. -

1 stop15h 20m

Deal found 14/9C$ 1,360

Wed 11/116:10 p.m. -

2 stops15h 55m

Sat 14/114:35 p.m. -

2 stops31h 10m

Deal found 12/9C$ 1,455

Sat 7/1110:50 a.m. -

2 stops21h 55m

Sat 14/119:30 p.m. -

3 stops21h 42m

Deal found 15/9C$ 894

Thu 1/106:55 p.m. -

Nonstop6h 35m

Sun 11/105:40 p.m. -

1 stop12h 05m

Deal found 15/9C$ 919

Sun 17/15:10 p.m. -

1 stop18h 25m

Fri 29/16:20 a.m. -

1 stop13h 40m

Deal found 14/9C$ 950

Fri 6/119:00 a.m. -

3 stops27h 35m

Fri 13/116:00 a.m. -

2 stops21h 32m

Deal found 16/9C$ 922

Sun 17/15:10 p.m. -

2 stops12h 35m

Fri 29/16:30 a.m. -

2 stops13h 30m

Deal found 14/9C$ 1,063

Mon 26/1010:30 a.m. -

1 stop20h 20m

Sat 7/1112:00 p.m. -

1 stop14h 56m

Deal found 13/9C$ 1,063

Thu 12/1110:50 a.m. -

3 stops27h 15m

Wed 18/118:55 p.m. -

2 stops22h 12m

Deal found 16/9C$ 947

Sat 24/106:05 a.m. -

1 stop10h 20m

Mon 2/114:20 p.m. -

2 stops26h 49m

Deal found 15/9C$ 1,072

Sat 17/109:00 p.m. -

Nonstop6h 35m

Fri 23/102:05 p.m. -

1 stop11h 45m

Deal found 16/9C$ 1,075

Fri 23/105:10 p.m. -

1 stop11h 15m

Fri 30/1010:00 a.m. -

1 stop10h 00m

Deal found 12/9C$ 1,159

Sun 20/911:10 a.m. -

2 stops17h 05m

Mon 28/97:40 p.m. -

3 stops23h 18m

Deal found 14/9C$ 1,004

Sun 27/125:40 p.m. -

1 stop11h 05m

Wed 13/111:40 a.m. -

1 stop18h 10m

Deal found 13/9C$ 1,343

Mon 19/105:10 p.m. -

2 stops12h 35m

Sat 24/105:50 p.m. -

1 stop11h 30m

Deal found 15/9C$ 1,255

Fri 9/105:20 p.m. -

2 stops23h 05m

Fri 23/108:40 a.m. -

2 stops30h 16m

Deal found 15/9C$ 1,167

Wed 21/107:30 p.m. -

2 stops18h 55m

Sat 31/105:15 p.m. -

3 stops25h 52m

Deal found 14/9C$ 1,018

Sun 27/95:25 p.m. -

1 stop11h 00m

Sun 4/105:00 p.m. -

1 stop27h 00m

Deal found 15/9C$ 1,305

Mon 12/105:10 p.m. -

1 stop14h 45m

Wed 21/106:10 a.m. -

1 stop13h 50m

Deal found 16/9C$ 1,026

Mon 9/119:00 a.m. -

2 stops18h 40m

Wed 25/119:15 a.m. -

2 stops15h 30m

Deal found 14/9C$ 1,657

Sun 27/98:55 p.m. -

2 stops16h 00m

Sun 4/1011:35 a.m. -

1 stop11h 00m

Deal found 11/9C$ 1,029

Tue 10/1110:50 a.m. -

2 stops16h 50m

Mon 23/119:15 a.m. -

2 stops15h 30m

Deal found 14/9C$ 1,678

Wed 21/105:10 p.m. -

2 stops11h 20m

Sat 31/1010:00 a.m. -

2 stops18h 44m

Deal found 14/9C$ 1,641

Find flight deals from Ottawa to London

Round-trip from	C$ 711
One-way from	C$ 351
Popular in	December
Cheapest in	September
Average price	C$ 780
Good round-trip deal	C$ 692 or less
Good one-way deal	C$ 376 or less

Air Transat
27/9-2/10
Nonstop
15h 15m total
Ottawa to London

Search Deals

Porter Airlines
14/10-31/12
1 total stop
13h 45m total
Ottawa to London

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (C$ 35 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 31 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 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 - LGW London Gatwick

YOWLGW

Ottawa

Mon 28/9

4:00 p.m.-10:45 a.m.

1 stop13h 45m

London Gatwick

Wed 31/12

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

Nonstop0h 00m

C$ 372

OttawaLondon

YOW Ottawa - LGW London Gatwick

YOWLGW

Ottawa

Tue 13/10

4:00 p.m.-10:45 a.m.

1 stop13h 45m

London Gatwick

Wed 31/12

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

Nonstop0h 00m

C$ 374

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Sun 11/10

6:25 p.m.-9:15 a.m.

2 stops33h 50m

London Luton

Wed 31/12

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

Nonstop0h 00m

C$ 375

OttawaLondon

YOW Ottawa - LGW London Gatwick

YOWLGW

Ottawa

Sun 11/10

6:25 p.m.-8:00 p.m.

2 stops20h 35m

London Gatwick

Wed 31/12

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

Nonstop0h 00m

C$ 381

OttawaLondon

YOW Ottawa - LGW London Gatwick

YOWLGW

Ottawa

Fri 9/10

8:55 p.m.-7:55 a.m.

1 stop30h 00m

London Gatwick

Wed 31/12

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

Nonstop0h 00m

C$ 382

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Sat 10/10

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

2 stops36h 00m

London Luton

Wed 31/12

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

Nonstop0h 00m

C$ 385

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Tue 13/10

6:25 p.m.-3:30 p.m.

2 stops16h 05m

London Luton

Wed 31/12

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

Nonstop0h 00m

C$ 395

OttawaLondon

YOW Ottawa - LTN London Luton

YOWLTN

Ottawa

Mon 19/10

1:20 p.m.-9:15 a.m.

2 stops38h 55m

London Luton

Wed 31/12

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

Nonstop0h 00m

C$ 404

OttawaLondon

YOW Ottawa - STN London Stansted

YOWSTN

Ottawa

Sat 10/10

6:25 p.m.-7:20 a.m.

3 stops31h 55m

London Stansted

Wed 31/12

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

Nonstop0h 00m

C$ 407

OttawaLondon

YOW Ottawa - LGW London Gatwick

YOWLGW

Ottawa

Thu 15/10

6:25 p.m.-5:05 p.m.

2 stops17h 40m

London Gatwick

Wed 31/12

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

Nonstop0h 00m

C$ 417

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

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-LGW

YOW-LHR

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-LGW

YOW-LHR

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$ 859). Flying from Ottawa to London in December is currently the most expensive (average of C$ 1,311). 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 typical for this route at the moment.

Ottawa to London flights typically cost between C$ 686 and C$ 926 in October.
The cheapest round-trip price found within the last 5 days was C$ 711 on Air Transat (16 Oct-23 Oct).

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

Toronto (YYZ) – chosen by Cheapflights users on 39% 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$ 851.

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 Paris (CDG) offer the fastest connection on this route, with an average layover time of 1h 36m.

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 136 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 Sunday 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 19% 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

462 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

462 reviews

Porter Airlines

8.0

Very good

462 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Air Transat

7.7

Good

579 reviews

Porter Airlines

8.0

Very good

462 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Virgin Atlantic

7.4

Good

694 reviews

Porter Airlines

8.0

Very good

462 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Air Canada

7.1

Good

11,644 reviews

Porter Airlines

8.0

Very good

462 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Lufthansa

6.8

Okay

8,231 reviews

Porter Airlines

8.0

Very good

462 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 7h 15m. 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$ 482 on this airline. Additional options worth looking into are Air Transat and Air France, starting at C$ 682 and C$ 776 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 City or Ottawa - London Gatwick 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: Air Canada (41%), Aegean Airlines (41%), Austrian Airlines (41%).
What are the cheapest flights from Ottawa to London?
The cheapest flight price from Ottawa to London is C$ 899. On average you can expect to pay C$ 1,240. The most popular route, (Ottawa - London Heathrow), can usually be booked for C$ 888.
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$ 859). Flying from Ottawa to London in December is currently the most expensive (average of C$ 1,311). 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

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Complete your trip

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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$ 482	AverageC$ 967	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air Transat	CheapestC$ 682	AverageC$ 809	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air France	CheapestC$ 776	AverageC$ 1,040	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Canada	CheapestC$ 901	AverageC$ 1,115	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	CheapestC$ 918	AverageC$ 1,144	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$ 351

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 14/10. 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 17 September 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 17 September 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 17 September 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 17 September 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 17 September 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 17 September 2026.

Last-minute flights from Ottawa to LondonDiscover last-minute flight deals from Ottawa to London. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Ottawa to London. Data last updated 17 September 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 17 September 2026.

Search for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 17 September 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 17 September 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 typical for this route at the moment.

Ottawa to London flights typically cost between C$ 686 and C$ 926 in October.The cheapest round-trip price found within the last 5 days was C$ 711 on Air Transat (16 Oct-23 Oct).

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.

Toronto (YYZ) – chosen by Cheapflights users on 39% 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$ 851.

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 Paris (CDG) offer the fastest connection on this route, with an average layover time of 1h 36m.

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 136 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 Sunday 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 19% 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 17 September 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 17 September 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 17 September 2026.

Last-minute flights from Ottawa to London
Discover last-minute flight deals from Ottawa to London. Data last updated 17 September 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 17 September 2026.

Ottawa to London flights typically cost between C$ 686 and C$ 926 in October.
The cheapest round-trip price found within the last 5 days was C$ 711 on Air Transat (16 Oct-23 Oct).