Which airlines fly to London?

Air Canada, British Airways and Lufthansa are the top three most popular airlines that fly to London from Ottawa according to our data. Air Canada is the first choice among our users, with 61% of people opting to fly with this airline when travelling to London. Keep in mind that there are 11 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Air Canada has had the least delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

How often are flights from Ottawa to London delayed?

Historically, on average around 20% of flights between Ottawa and London have experienced a delay on any given week. The average delay length over the past 12 months has been 138 minutes.

Which layover airport has the shortest travel time from Ottawa to London?

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 9h 25m.

Which airport is the most popular layover for flights between Ottawa and London?

Toronto (YYZ) was the most common stop: 68% of momondo users choosing one-stop flights on this route connected there.

Which layover airport offers the lowest fares from Ottawa to London?

Flights via Toronto (YYZ) offer the lowest average round-trip price of C$ 892.

How many flights depart from Ottawa to London on average per week?

The number of flights available between Ottawa and London is 16 per week as of January 2026. The most frequent departure day is Wed, with 38% of weekly flights leaving on this day.

Which layover airport has the shortest connection time from Ottawa to London?

Montreal (YUL) has the shortest average layover time for this route: 1h 42m.

How many flights depart from Ottawa to London on average per day?

As of January 2026, 2 flights take off from Ottawa and land in London each day. The most common flight departure time for this route is 9:00p.m., with 100% of daily flights taking off in the evening.

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

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

When did momondo last update prices for flights from Ottawa Airport to London?

Prices for flights from Ottawa Airport to London were last updated today.

How many operators does momondo search for flights from Ottawa Airport to London?

As of January 2026, there are 6 operators available to choose from for flights from Ottawa Airport to London.

How old do you have to be to fly from Ottawa Airport to London?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to London.

What documentation or ID do you need to fly to London?

The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

C$ 172 Cheap Flights from Ottawa to London in 2026

Q: What is the typical price of a round-trip flight between Ottawa and London?

Prices are currently low for flights on this route. Typical prices usually range from C$ 783 to C$ 963. The lowest price recently found on this route was C$ 729.

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One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:00 a.m. - 9:45 a.m.

YOW

LGW

18h 45m

1 stop

11:40 a.m. - 12:43 a.m.

LGW

YOW

18h 03m

1 stop

C$ 729Porter Airlines

Wed, 18 Feb - Wed, 25 Feb

3:05 p.m. - 9:45 a.m.

YOW

LGW

13h 40m

1 stop

11:40 a.m. - 4:48 p.m.

LGW

YOW

33h 08m

1 stop

C$ 739Air Transat

Wed, 4 Mar - Thu, 19 Mar

5:40 a.m. - 9:20 p.m.

YOW

STN

34h 40m

2 stops

12:10 p.m. - 12:39 a.m.

STN

YOW

40h 29m

3 stops

C$ 741Multiple Airlines

Mon, 2 Mar - Wed, 11 Mar

5:40 a.m. - 6:20 p.m.

YOW

STN

31h 40m

2 stops

8:35 a.m. - 12:39 a.m.

STN

YOW

44h 04m

3 stops

C$ 744Multiple Airlines

Mon, 2 Mar - Wed, 11 Mar

6:50 p.m. - 9:45 a.m.

YOW

LGW

9h 55m

1 stop

11:40 a.m. - 8:25 a.m.

LGW

YOW

25h 45m

1 stop

C$ 748Air Transat

Wed, 18 Feb - Tue, 24 Feb

6:50 p.m. - 9:45 a.m.

YOW

LGW

9h 55m

1 stop

11:40 a.m. - 6:33 p.m.

LGW

YOW

11h 53m

1 stop

C$ 749Air Transat

Thu, 19 Feb - Tue, 24 Feb

5:30 p.m. - 9:00 p.m.

YOW

LHR

22h 30m

1 stop

12:40 p.m. - 6:33 p.m.

LHR

YOW

10h 53m

1 stop

C$ 843Air Canada

Thu, 21 May - Fri, 5 Jun

5:30 p.m. - 9:00 p.m.

YOW

LHR

22h 30m

1 stop

9:30 a.m. - 7:51 p.m.

LHR

YOW

15h 21m

2 stops

C$ 846Air Canada

Mon, 25 May - Sun, 7 Jun

10:50 a.m. - 8:40 a.m.

YOW

LCY

16h 50m

2 stops

9:20 a.m. - 7:15 p.m.

LCY

YOW

13h 55m

2 stops

C$ 1,025SWISS

Wed, 4 Mar - Wed, 11 Mar

10:50 a.m. - 8:40 a.m.

YOW

LCY

16h 50m

2 stops

9:20 a.m. - 5:41 p.m.

LCY

YOW

13h 21m

2 stops

C$ 1,026SWISS

Wed, 18 Feb - Wed, 25 Feb

Air France flights from Ottawa to London

Our best Air France deals on Ottawa to London flight tickets

Air France

19 Feb

YOW5:20 p.m.Ottawa

12h 10m

1 stop

LHR10:30 a.m.London Heathrow

22 Feb

LHR11:30 a.m.London Heathrow

32h 40m

1 stop

YOW3:10 p.m.Ottawa

C$ 937

Air France

20 Apr

YOW5:10 p.m.Ottawa

15h 35m

1 stop

LHR1:45 p.m.London Heathrow

4 May

LHR8:55 a.m.London Heathrow

11h 05m

1 stop

YOW3:00 p.m.Ottawa

C$ 939

Air France

14 Apr

YOW5:10 p.m.Ottawa

18h 25m

1 stop

LHR4:35 p.m.London Heathrow

28 Apr

LHR6:15 a.m.London Heathrow

13h 45m

1 stop

YOW3:00 p.m.Ottawa

C$ 941

Air Canada flights from Ottawa to London

Our best Air Canada deals on Ottawa to London flight tickets

Air Canada

21 May

YOW5:30 p.m.Ottawa

22h 30m

1 stop

LHR9:00 p.m.London Heathrow

5 Jun

LHR12:40 p.m.London Heathrow

10h 53m

1 stop

YOW6:33 p.m.Ottawa

C$ 843

Air Canada

25 May

YOW5:30 p.m.Ottawa

22h 30m

1 stop

LHR9:00 p.m.London Heathrow

7 Jun

LHR9:30 a.m.London Heathrow

15h 21m

2 stops

YOW7:51 p.m.Ottawa

C$ 846

Air Canada

23 May

YOW5:30 p.m.Ottawa

22h 30m

1 stop

LHR9:00 p.m.London Heathrow

5 Jun

LHR2:05 p.m.London Heathrow

12h 46m

2 stops

YOW9:51 p.m.Ottawa

C$ 847

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 18/2

10:00 a.m.-9:45 a.m.

1 stop18h 45m

London Gatwick

Wed 25/2

11:40 a.m.-12:43 a.m.

1 stop18h 03m

C$ 729

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 4/3

3:05 p.m.-9:45 a.m.

1 stop13h 40m

London Gatwick

Thu 19/3

11:40 a.m.-4:48 p.m.

1 stop33h 08m

C$ 739

OttawaLondon

YOW - STN

YOWSTN

Ottawa

Mon 2/3

5:40 a.m.-9:20 p.m.

2 stops34h 40m

London Stansted

Wed 11/3

12:10 p.m.-12:39 a.m.

3 stops40h 29m

C$ 741

OttawaLondon

YOW - STN

YOWSTN

Ottawa

Mon 2/3

5:40 a.m.-6:20 p.m.

2 stops31h 40m

London Stansted

Wed 11/3

8:35 a.m.-12:39 a.m.

3 stops44h 04m

C$ 744

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 18/2

6:50 p.m.-9:45 a.m.

1 stop9h 55m

London Gatwick

Tue 24/2

11:40 a.m.-8:25 a.m.

1 stop25h 45m

C$ 748

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 19/2

6:50 p.m.-9:45 a.m.

1 stop9h 55m

London Gatwick

Tue 24/2

11:40 a.m.-6:33 p.m.

1 stop11h 53m

C$ 749

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 21/5

5:30 p.m.-9:00 p.m.

1 stop22h 30m

London Heathrow

Fri 5/6

12:40 p.m.-6:33 p.m.

1 stop10h 53m

C$ 843

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 25/5

5:30 p.m.-9:00 p.m.

1 stop22h 30m

London Heathrow

Sun 7/6

9:30 a.m.-7:51 p.m.

2 stops15h 21m

C$ 846

OttawaLondon

YOW - LCY

YOWLCY

Ottawa

Wed 4/3

10:50 a.m.-8:40 a.m.

2 stops16h 50m

London City

Wed 11/3

9:20 a.m.-7:15 p.m.

2 stops13h 55m

C$ 1,025

OttawaLondon

YOW - LCY

YOWLCY

Ottawa

Wed 18/2

10:50 a.m.-8:40 a.m.

2 stops16h 50m

London City

Wed 25/2

9:20 a.m.-5:41 p.m.

2 stops13h 21m

C$ 1,026

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ottawa to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Delays

Layovers

Other information

What is the typical price of a round-trip flight between Ottawa and London?

What is the cheapest month to fly to London?

In general, February is the cheapest month to fly from Ottawa to London. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 886. If you aren’t able to travel to London during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 920.

What is the cheapest day to depart on your flight to London?

According to our data, Friday is the cheapest day to fly to London from Ottawa. The lowest ticket price found for a Friday departure recently was C$ 1,045. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to London for around C$ 1,122.

What is the cheapest time of day to depart on your flight to London?

Our most recent data shows that the best time of day to fly to London is in the evening. Flights from Ottawa to London during this time can be as low as C$ 1,075. In the afternoon is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,081 per ticket.

What is the cheapest Ottawa to London flight route?

Fly from Ottawa to London Gatwick for the best Ottawa - London flight prices

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around C$ 1,041 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Ottawa for as low as C$ 980 on momondo.

What cabin class options are available on Ottawa to London flights?

There are 3 cabin classes available to choose from on Ottawa to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ottawa to London flights?

You could potentially save up to 38% on your flight if you consider stops on a Ottawa to London flight.

How have Ottawa to London flight prices changed over time?

As of January 2026, prices for Ottawa to London flights are approximately 19% cheaper when compared to flights at the same time last year.

When to book flights from Ottawa to London

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ottawa to London (YOW to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to London

Best price found	C$ 1,059
Fastest flight time	6h 25m
Direct flights	Every day
Airports in London	6 airports

The best one-way flight to London from Ottawa in the past 72 hours is C$ 1,059. The best round-trip flight deal from Ottawa to London found on momondo in the last 72 hours is C$ 156.

The fastest flight from Ottawa to London takes 6h 25m

Direct flights go from Ottawa to London every day.

There are 6 airports in London. From Ottawa there are direct flights to London Heathrow (LHR), London Gatwick (LGW).

Search flight deals

How far is Ottawa to London by plane?
A flight from Ottawa to London will travel around 5358.1 km. In terms of flight time, this usually takes a little over 6h 25m.
When did momondo last update prices for flights from Ottawa Airport to London?
Prices for flights from Ottawa Airport to London were last updated today.
How many operators does momondo search for flights from Ottawa Airport to London?
As of January 2026, there are 6 operators available to choose from for flights from Ottawa Airport to London.
How old do you have to be to fly from Ottawa Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to London.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Ottawa to London?
Based on momondo bookings for flights between Ottawa and London, the leading plane model is Boeing 787-8 Dreamliner, making up 53.22% of the total bookings. Other popular models include Airbus A321neo with 12.88%, Airbus A330-300 with 11.19%, and De Havilland (Bombardier) DHC-8-400 Dash 8Q with 10.17%.
What is the most popular airline from Ottawa to London?
momondo data reveals that the most frequently booked airline on the route from Ottawa to London is Air Canada, representing 68% of all bookings. The subsequent popular airlines are Lufthansa at 10%, Air Transat at 9%, and United Airlines at 6%.

Best airlines flying from Ottawa to London

Compare and see reviews for airlines that fly from Ottawa to London with momondo

Airline	Rating	Free Cancellation	Price
Air Transat	PriceFrom C$ 664	Free Cancellation	Rating 7.7 501 reviews	Search Air Transat flights
Air France	PriceFrom C$ 755	Free Cancellation	Rating 7.4 1,528 reviews	Search Air France flights
Porter Airlines	PriceFrom C$ 772	Free Cancellation	Rating 7.9 412 reviews	Search Porter Airlines flights
United Airlines	PriceFrom C$ 875	Free Cancellation	Rating 7.4 9,215 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 887	Free Cancellation	Rating 7.1 10,667 reviews	Search Air Canada flights
Lufthansa	PriceFrom C$ 941	Free Cancellation	Rating 6.8 7,756 reviews	Search Lufthansa flights

United Airlines Flights From Ottawa to London
The lowest priced United Airlines flight from Ottawa to London from the last 72 hours was C$ 875. Generally, United Airlines has 3 flights on this route every week with an average price of C$ 1,099. United Airlines is rated 7.4/10 by our users.
Air Canada Flights From Ottawa to London
Another popular option for Ottawa to London flights is Air Canada (7.1/10, 10,667 ratings). Air Canada flies from Ottawa to London around 1 time per week, with deals starting from C$ 887 round-trip and rising to an average price of around C$ 1,018.

Hounslow

Gatwick

Ilford

Chelmsford

Wokingham

Slough

Feltham

Hayes

Richmond

Uxbridge

Wembley

Waterlooville

Newport

Basingstoke

Milton Keynes

Dover

Worthing

Ipswich

Guildford

Maidstone

Why use momondo?

Why should I use momondo to find a flight deal from Ottawa to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ottawa to London for you.

Can I find flights from Ottawa to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ottawa to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Ottawa to London?

Once you have performed a search for Ottawa to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ottawa to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ottawa to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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Flights to Leedsfrom C$ 673

Flights to Liverpoolfrom C$ 633

Flights to Cardifffrom C$ 695

Flights to Newquayfrom C$ 2,054

Cheap flights from Ottawa to London from C$ 396

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to London departing on 20/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

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Filter for what you want

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Find the cheapest flights from Ottawa to London

Cheap round-trip flights

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Cheap last-minute flights

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Air France flights from Ottawa to London

Our best Air France deals on Ottawa to London flight tickets

Air Canada flights from Ottawa to London

Our best Air Canada deals on Ottawa to London flight tickets

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

See travel insights to London from

How to get the cheapest flight ticket from Ottawa to London

What is the typical price of a round-trip flight between Ottawa and London?

What is the cheapest month to fly to London?

What is the cheapest day to depart on your flight to London?

What is the cheapest time of day to depart on your flight to London?

Our most recent data shows that the best time of day to fly to London is in the evening. Flights from Ottawa to London during this time can be as low as C$ 1,075. In the afternoon is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,081 per ticket.

What is the cheapest Ottawa to London flight route?

Fly from Ottawa to London Gatwick for the best Ottawa - London flight prices

How far in advance should I book a flight to London?

What cabin class options are available on Ottawa to London flights?

There are 3 cabin classes available to choose from on Ottawa to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ottawa to London flights?

You could potentially save up to 38% on your flight if you consider stops on a Ottawa to London flight.

How have Ottawa to London flight prices changed over time?

As of January 2026, prices for Ottawa to London flights are approximately 19% cheaper when compared to flights at the same time last year.

Which airlines fly to London?

How often are flights from Ottawa to London delayed?

Historically, on average around 20% of flights between Ottawa and London have experienced a delay on any given week. The average delay length over the past 12 months has been 138 minutes.

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

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

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

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Air Canada has had the least delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between Ottawa and London?

Toronto (YYZ) was the most common stop: 68% of momondo users choosing one-stop flights on this route connected there.

Which layover airport offers the lowest fares from Ottawa to London?

Flights via Toronto (YYZ) offer the lowest average round-trip price of C$ 892.

Which layover airport has the shortest travel time from Ottawa to London?

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 9h 25m.

Which layover airport has the shortest connection time from Ottawa to London?

Montreal (YUL) has the shortest average layover time for this route: 1h 42m.

How many flights depart from Ottawa to London on average per day?

As of January 2026, 2 flights take off from Ottawa and land in London each day. The most common flight departure time for this route is 9:00p.m., with 100% of daily flights taking off in the evening.

How many flights depart from Ottawa to London on average per week?

The number of flights available between Ottawa and London is 16 per week as of January 2026. The most frequent departure day is Wed, with 38% of weekly flights leaving on this day.

When to book flights from Ottawa to London

Cheap Ottawa to London (YOW to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to London

Best price found

Fastest flight time

Direct flights

Airports in London

How far is Ottawa to London by plane?

When did momondo last update prices for flights from Ottawa Airport to London?

How many operators does momondo search for flights from Ottawa Airport to London?

How old do you have to be to fly from Ottawa Airport to London?

What documentation or ID do you need to fly to London?

What is the most popular plane model from Ottawa to London?

What is the most popular airline from Ottawa to London?

Best airlines flying from Ottawa to London

Compare and see reviews for airlines that fly from Ottawa to London with momondo

United Airlines Flights From Ottawa to London

Air Canada Flights From Ottawa to London

Travelling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from Ottawa to London?

Can I find flights from Ottawa to London with flexible booking policies on momondo?