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 layover airport offers the lowest fares from Ottawa to London?

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 826.

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 16% of their flights experiencing any sort of delay.

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.

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

Toronto (YYZ) was the most common stop: 64% of momondo users choosing one-stop flights on this route connected there.

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

The number of flights available between Ottawa and London is 22 per week as of December 2025. The most frequent departure day is Fri, with 36% of weekly flights leaving on this day.

What is the cheapest airline that flies from Ottawa to London?

WestJet and Aer Lingus are the most popular carriers operating from Ottawa to London

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 63% 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 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.

How often are flights from Ottawa to London delayed?

Historically, on average around 16% 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 141 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.

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 December 2025, there are 7 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$ 349 Cheap Flights from Ottawa to London in 2025/26

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$ 941 to C$ 1,231. The lowest price recently found on this route was C$ 758.

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6:55 p.m. - 9:45 a.m.

YOW

LGW

9h 50m1 stop

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

LGW

YOW

18h 03m1 stop

C$ 758Air Transat

Wed, 21 Jan - Wed, 28 Jan

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

YOW

LGW

18h 45m1 stop

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

LGW

YOW

25h 45m1 stop

C$ 759Air Transat

Sun, 25 Jan - Fri, 6 Feb

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

YOW

LGW

18h 45m1 stop

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

LGW

YOW

18h 03m1 stop

C$ 762Air Transat

Sun, 15 Feb - Wed, 18 Feb

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

YOW

LHR

20h 00m1 stop

9:00 a.m. - 3:10 p.m.

LHR

YOW

11h 10m1 stop

C$ 907Air France

Tue, 27 Jan - Tue, 3 Feb

5:45 p.m. - 4:35 p.m.

YOW

LHR

17h 50m1 stop

9:00 a.m. - 3:10 p.m.

LHR

YOW

11h 10m1 stop

C$ 909Virgin Atlantic

Fri, 23 Jan - Sun, 8 Feb

5:45 p.m. - 10:30 a.m.

YOW

LHR

11h 45m1 stop

8:55 a.m. - 3:10 p.m.

LHR

YOW

11h 15m1 stop

C$ 912Air France

Fri, 23 Jan - Sun, 1 Feb

5:40 a.m. - 12:50 p.m.

YOW

LHR

26h 10m2 stops

2:50 p.m. - 2:17 p.m.

LHR

YOW

28h 27m1 stop

C$ 937Multiple Airlines

Sun, 25 Jan - Fri, 6 Feb

10:30 a.m. - 7:10 a.m.

YOW

LHR

15h 40m2 stops

6:00 a.m. - 7:18 p.m.

LHR

YOW

18h 18m2 stops

C$ 938Multiple Airlines

Wed, 21 Jan - Wed, 28 Jan

10:45 a.m. - 12:55 p.m.

YOW

LCY

21h 10m2 stops

9:20 a.m. - 7:18 p.m.

LCY

YOW

14h 58m2 stops

C$ 1,024SWISS

Wed, 21 Jan - Wed, 28 Jan

4:15 p.m. - 5:05 p.m.

YOW

LCY

19h 50m2 stops

9:15 a.m. - 7:18 p.m.

LCY

YOW

15h 03m2 stops

C$ 1,028SWISS

Tue, 27 Jan - Tue, 3 Feb

Air France flights from Ottawa to London

Our best Air France deals on Ottawa to London flight tickets

Air France

27 Jan

YOW5:20 p.m.Ottawa

20h 00m

1 stop

LHR6:20 p.m.London Heathrow

3 Feb

LHR9:00 a.m.London Heathrow

11h 10m

1 stop

YOW3:10 p.m.Ottawa

C$ 907

Find similar

Air France

8 Feb

YOW5:20 p.m.Ottawa

9h 40m

1 stop

LHR8:00 a.m.London Heathrow

2 Mar

LHR6:20 a.m.London Heathrow

13h 50m

1 stop

YOW3:10 p.m.Ottawa

C$ 912

Find similar

Air France

15 Feb

YOW5:20 p.m.Ottawa

9h 35m

1 stop

LHR7:55 a.m.London Heathrow

18 Feb

LHR7:25 p.m.London Heathrow

24h 45m

1 stop

YOW3:10 p.m.Ottawa

C$ 922

Find similar

WestJet flights from Ottawa to London

Our best WestJet deals on Ottawa to London flight tickets

WestJet

16 Jan

YOW7:15 p.m.Ottawa

36h 35m

2 stops

LHR12:50 p.m.London Heathrow

26 Jan

LHR2:50 p.m.London Heathrow

14h 50m

1 stop

YOW12:40 a.m.Ottawa

C$ 957

Find similar

WestJet

19 Jan

YOW5:40 a.m.Ottawa

26h 10m

2 stops

LHR12:50 p.m.London Heathrow

2 Feb

LHR2:50 p.m.London Heathrow

14h 50m

1 stop

YOW12:40 a.m.Ottawa

C$ 982

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 21/1

6:55 p.m.-9:45 a.m.

1 stop9h 50m

London Gatwick

Wed 28/1

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

1 stop18h 03m

C$ 758

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 25/1

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

1 stop18h 45m

London Gatwick

Fri 6/2

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

1 stop25h 45m

C$ 759

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 15/2

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

1 stop18h 45m

London Gatwick

Wed 18/2

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

1 stop18h 03m

C$ 762

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 27/1

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

1 stop20h 00m

London Heathrow

Tue 3/2

9:00 a.m.-3:10 p.m.

1 stop11h 10m

C$ 907

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 23/1

5:45 p.m.-4:35 p.m.

1 stop17h 50m

London Heathrow

Sun 8/2

9:00 a.m.-3:10 p.m.

1 stop11h 10m

C$ 909

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 23/1

5:45 p.m.-10:30 a.m.

1 stop11h 45m

London Heathrow

Sun 1/2

8:55 a.m.-3:10 p.m.

1 stop11h 15m

C$ 912

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 25/1

5:40 a.m.-12:50 p.m.

2 stops26h 10m

London Heathrow

Fri 6/2

2:50 p.m.-2:17 p.m.

1 stop28h 27m

C$ 937

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 21/1

10:30 a.m.-7:10 a.m.

2 stops15h 40m

London Heathrow

Wed 28/1

6:00 a.m.-7:18 p.m.

2 stops18h 18m

C$ 938

OttawaLondon

YOW - LCY

YOWLCY

Ottawa

Wed 21/1

10:45 a.m.-12:55 p.m.

2 stops21h 10m

London City

Wed 28/1

9:20 a.m.-7:18 p.m.

2 stops14h 58m

C$ 1,024

OttawaLondon

YOW - LCY

YOWLCY

Ottawa

Tue 27/1

4:15 p.m.-5:05 p.m.

2 stops19h 50m

London City

Tue 3/2

9:15 a.m.-7:18 p.m.

2 stops15h 03m

C$ 1,028

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$ 893. If you aren’t able to travel to London during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of C$ 938.

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

According to our data, Tuesday is the cheapest day to fly to London from Ottawa. The lowest ticket price found for a Tuesday departure recently was C$ 1,055. 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$ 1,173.

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 morning. Flights from Ottawa to London during this time can be as low as C$ 1,064. At noon is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,123 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$ 1,046 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$ 984 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 55% 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 December 2025, prices for Ottawa to London flights are approximately 36% more expensive 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$ 828
Fastest flight time	6h 25m
Direct flights	Mon, Tue, Thu, Fri, Sat and Sun
Airports in London	6 airports

The best one-way flight to London from Ottawa in the past 72 hours is C$ 828. The best round-trip flight deal from Ottawa to London found on momondo in the last 72 hours is C$ 783.

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

Direct flights go from Ottawa to London on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

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 December 2025, there are 7 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 64.60% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 15.49%, Airbus A321neo with 7.52%, and Airbus A330-300 with 3.98%.
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 9%, Air Transat at 7%, and Air France at 5%.

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$ 676	Free Cancellation	Rating 7.7 485 reviews	Search Air Transat flights
Air France	PriceFrom C$ 716	Free Cancellation	Rating 7.4 1,515 reviews	Search Air France flights
Virgin Atlantic	PriceFrom C$ 725	Free Cancellation	Rating 7.5 677 reviews	Search Virgin Atlantic flights
Porter Airlines	PriceFrom C$ 778	Free Cancellation	Rating 8.0 401 reviews	Search Porter Airlines flights
United Airlines	PriceFrom C$ 881	Free Cancellation	Rating 7.4 9,115 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 886	Free Cancellation	Rating 7.1 10,562 reviews	Search Air Canada flights
Lufthansa	PriceFrom C$ 930	Free Cancellation	Rating 6.8 7,655 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$ 881. Generally, United Airlines has 3 flights on this route every week with an average price of C$ 1,107. 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, 10,562 ratings). Air Canada flies from Ottawa to London around 3 times per week, with deals starting from C$ 886 round-trip and rising to an average price of around C$ 1,025.

Hounslow

Ipswich

Gatwick

Ilford

Chelmsford

Wokingham

Slough

Feltham

Hayes

Uxbridge

Wembley

Waterlooville

Newport

Basingstoke

Milton Keynes

Dover

Worthing

Guildford

Maidstone

Woking

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 Cardifffrom C$ 890

Flights to Invernessfrom C$ 767

Cheap flights from Ottawa to London from C$ 350

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 26/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names, great deals

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Cheap round-trip flights

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Air France flights from Ottawa to London

Our best Air France deals on Ottawa to London flight tickets

WestJet flights from Ottawa to London

Our best WestJet 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 morning. Flights from Ottawa to London during this time can be as low as C$ 1,064. At noon is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,123 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 55% 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 December 2025, prices for Ottawa to London flights are approximately 36% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Ottawa to London?

WestJet and Aer Lingus are the most popular carriers operating from Ottawa to London

Which airlines fly to London?

How often are flights from Ottawa to London delayed?

Historically, on average around 16% 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 141 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 16% 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: 64% 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 Calgary (YYC) offer the lowest average round-trip price of C$ 826.

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 week?

The number of flights available between Ottawa and London is 22 per week as of December 2025. The most frequent departure day is Fri, with 36% 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?