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

Flights via Toronto (YYZ) offer the lowest average round-trip price of C$ 899.

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?

Newark (EWR) has the shortest average layover time for this route: 1h 29m.

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

As of February 2026, 3 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.

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

Toronto (YYZ) was the most common stop: 73% of momondo users choosing one-stop flights on this route connected there.

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 60% 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.

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

The number of flights available between Ottawa and London is 21 per week as of February 2026. The most frequent departure day is Fri, with 38% of weekly flights leaving on this day.

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

WestJet is the most popular carrier operating from Ottawa to London

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 22% of their flights experiencing any sort of delay.

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.

How often are flights from Ottawa to London delayed?

Historically, on average around 22% 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 136 minutes.

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 February 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$ 174 Cheap Flights from Ottawa to London in 2026

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One-way

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Cheap round-trip flights

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

YOW

LGW

9h 55m

1 stop

11:40 a.m. - 8:23 a.m.

LGW

YOW

25h 43m

1 stop

C$ 746Air Transat

Thu, 26 Feb - Fri, 6 Mar

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

YOW

LGW

22h 00m

1 stop

11:40 a.m. - 7:28 p.m.

LGW

YOW

11h 48m

1 stop

C$ 749Air Transat

Sat, 7 Mar - Sat, 14 Mar

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

YOW

LGW

18h 45m

1 stop

11:40 a.m. - 7:23 a.m.

LGW

YOW

24h 43m

1 stop

C$ 756Air Transat

Sun, 1 Mar - Sat, 7 Mar

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

YOW

LGW

13h 40m

1 stop

11:40 a.m. - 6:23 p.m.

LGW

YOW

11h 43m

1 stop

C$ 760Porter Airlines

Mon, 23 Feb - Tue, 3 Mar

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

YOW

LGW

18h 45m

1 stop

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

LGW

YOW

33h 08m

1 stop

C$ 771Porter Airlines

Wed, 25 Feb - Wed, 11 Mar

5:55 a.m. - 9:45 p.m.

YOW

LHR

34h 50m

2 stops

6:15 a.m. - 12:20 a.m.

LHR

YOW

23h 05m

2 stops

C$ 813Multiple Airlines

Sat, 9 May - Sat, 23 May

6:25 p.m. - 11:20 p.m.

YOW

STN

23h 55m

2 stops

10:50 p.m. - 12:20 a.m.

STN

YOW

30h 30m

3 stops

C$ 828Multiple Airlines

Fri, 22 May - Fri, 5 Jun

12:15 p.m. - 9:00 p.m.

YOW

LHR

27h 45m

1 stop

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

LHR

YOW

10h 53m

1 stop

C$ 849Air Canada

Thu, 14 May - Fri, 29 May

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

YOW

LHR

22h 30m

1 stop

2:05 p.m. - 10:11 p.m.

LHR

YOW

13h 06m

1 stop

C$ 854Air Canada

Mon, 25 May - Sun, 7 Jun

2:05 p.m. - 5:40 p.m.

YOW

LCY

22h 35m

2 stops

9:50 a.m. - 6:38 p.m.

LCY

YOW

13h 48m

2 stops

C$ 1,117Lufthansa

Wed, 18 Feb - Wed, 25 Feb

Air Canada flights from Ottawa to London

Our best Air Canada deals on Ottawa to London flight tickets

Air Canada

14 May

YOW12:15 p.m.Ottawa

27h 45m

1 stop

LHR9:00 p.m.London Heathrow

29 May

LHR12:40 p.m.London Heathrow

10h 53m

1 stop

YOW6:33 p.m.Ottawa

C$ 849

Air Canada

25 May

YOW5:30 p.m.Ottawa

22h 30m

1 stop

LHR9:00 p.m.London Heathrow

7 Jun

LHR2:05 p.m.London Heathrow

13h 06m

1 stop

YOW10:11 p.m.Ottawa

C$ 854

Air Canada

24 May

YOW7:15 p.m.Ottawa

9h 45m

1 stop

LHR10:00 a.m.London Heathrow

7 Jun

LHR2:05 p.m.London Heathrow

24h 36m

1 stop

YOW9:41 a.m.Ottawa

C$ 858

Air France flights from Ottawa to London

Our best Air France deals on Ottawa to London flight tickets

Air France

24 Feb

YOW5:20 p.m.Ottawa

20h 00m

1 stop

LHR6:20 p.m.London Heathrow

5 Mar

LHR9:00 a.m.London Heathrow

11h 10m

1 stop

YOW3:10 p.m.Ottawa

C$ 935

Air France

24 Feb

YOW5:20 p.m.Ottawa

15h 25m

1 stop

LHR1:45 p.m.London Heathrow

4 Mar

LHR11:30 a.m.London Heathrow

32h 40m

1 stop

YOW3:10 p.m.Ottawa

C$ 955

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 26/2

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

1 stop9h 55m

London Gatwick

Fri 6/3

11:40 a.m.-8:23 a.m.

1 stop25h 43m

C$ 746

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 7/3

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

1 stop22h 00m

London Gatwick

Sat 14/3

11:40 a.m.-7:28 p.m.

1 stop11h 48m

C$ 749

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 1/3

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

1 stop18h 45m

London Gatwick

Sat 7/3

11:40 a.m.-7:23 a.m.

1 stop24h 43m

C$ 756

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 23/2

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

1 stop13h 40m

London Gatwick

Tue 3/3

11:40 a.m.-6:23 p.m.

1 stop11h 43m

C$ 760

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 25/2

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

1 stop18h 45m

London Gatwick

Wed 11/3

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

1 stop33h 08m

C$ 771

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 9/5

5:55 a.m.-9:45 p.m.

2 stops34h 50m

London Heathrow

Sat 23/5

6:15 a.m.-12:20 a.m.

2 stops23h 05m

C$ 813

OttawaLondon

YOW - STN

YOWSTN

Ottawa

Fri 22/5

6:25 p.m.-11:20 p.m.

2 stops23h 55m

London Stansted

Fri 5/6

10:50 p.m.-12:20 a.m.

3 stops30h 30m

C$ 828

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 14/5

12:15 p.m.-9:00 p.m.

1 stop27h 45m

London Heathrow

Fri 29/5

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

1 stop10h 53m

C$ 849

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 25/5

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

1 stop22h 30m

London Heathrow

Sun 7/6

2:05 p.m.-10:11 p.m.

1 stop13h 06m

C$ 854

OttawaLondon

YOW - LCY

YOWLCY

Ottawa

Wed 18/2

2:05 p.m.-5:40 p.m.

2 stops22h 35m

London City

Wed 25/2

9:50 a.m.-6:38 p.m.

2 stops13h 48m

C$ 1,117

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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$ 898. 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$ 927.

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$ 1,054. 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$ 1,130.

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 afternoon. Flights from Ottawa to London during this time can be as low as C$ 1,087. In the evening is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,088 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$ 1,048 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$ 987 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 February 2026, prices for Ottawa to London flights are approximately 9% 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$ 660
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$ 660. The best round-trip flight deal from Ottawa to London found on momondo in the last 72 hours is C$ 157.

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 February 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 57.14% of the total bookings. Other popular models include Airbus A321neo with 12.50%, Airbus A330-300 with 10.42%, and De Havilland (Bombardier) DHC-8-400 Dash 8Q with 8.93%.
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$ 668	Free Cancellation	Rating 7.7 504 reviews	Search Air Transat flights
Air France	PriceFrom C$ 771	Free Cancellation	Rating 7.4 1,531 reviews	Search Air France flights
Porter Airlines	PriceFrom C$ 777	Free Cancellation	Rating 7.9 413 reviews	Search Porter Airlines flights
United Airlines	PriceFrom C$ 881	Free Cancellation	Rating 7.4 9,257 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 893	Free Cancellation	Rating 7.1 10,698 reviews	Search Air Canada flights
Lufthansa	PriceFrom C$ 939	Free Cancellation	Rating 6.8 7,775 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$ 1,097. 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, 10,698 ratings). Air Canada flies from Ottawa to London around 2 times per week, with deals starting from C$ 893 round-trip and rising to an average price of around C$ 1,032.

Hounslow

Wembley

Ilford

Gatwick

Wokingham

Slough

Feltham

Hayes

Richmond

Uxbridge

Waterlooville

Newport

Chelmsford

Basingstoke

Milton Keynes

Dover

Worthing

Guildford

Ipswich

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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Cheap flights from Ottawa to London from C$ 385

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 24/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air Canada flights from Ottawa to London

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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 afternoon. Flights from Ottawa to London during this time can be as low as C$ 1,087. In the evening is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,088 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 February 2026, prices for Ottawa to London flights are approximately 9% cheaper when compared to flights at the same time last year.

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

WestJet is the most popular carrier operating from Ottawa to London

Which airlines fly to London?

How often are flights from Ottawa to London delayed?

Historically, on average around 22% 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 136 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 22% 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: 73% 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$ 899.

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?

Newark (EWR) has the shortest average layover time for this route: 1h 29m.

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

As of February 2026, 3 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 21 per week as of February 2026. The most frequent departure day is Fri, 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?