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

Toronto (YYZ) was the most common stop: 80% of momondo users choosing one-stop flights on this route connected there.

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

WestJet is the most popular carrier operating from Ottawa to London

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

3 flights are operational daily from Ottawa to London as of September 2025. The most popular departure time for this route is 21:00, with 100% of flights per day taking off in the evening.

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

24 flights are operational weekly from Ottawa to London as of September 2025. The most popular departure day for this route is Mon, with 29% of flights per week taking off on this day.

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

Flights via Halifax (YHZ) offer the lowest average return price of £610.

Which stopover 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 airlines fly to London?

Air Canada, British Airways and Air Transat 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 74% of people opting to fly with this airline when travelling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

Toronto (YYZ) has the shortest average stopover time for this route: 2h 33m.

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

Prices for flights from Ottawa Airport to London are updated daily.

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

There is 1 operator available for flights from Ottawa Airport to London as of September 2025.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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.

£174 Cheap Flights from Ottawa to London in 2025/26

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Find the cheapest flights from Ottawa to London

Round-trip

One-way

Last minute

Direct

Cheap return flights

16:05 - 06:30YOW-LHR

9h 25m1 stop

13:25 - 22:18LHR-YOW

12h 53m1 stop

£455Air Canada

Find Deal

Wed, 22 Oct - Wed, 29 Oct

07:00 - 21:00YOW-LHR

9h 00m1 stop

09:00 - 09:42LHR-YOW

28h 42m2 stops

£456Air Canada

Find Deal

Wed, 22 Oct - Wed, 29 Oct

14:20 - 10:45YOW-LGW

15h 25m1 stop

12:40 - 00:21LGW-YOW

16h 41m1 stop

£460Air Transat

Find Deal

Sun, 28 Sep - Fri, 10 Oct

07:00 - 21:00YOW-LHR

9h 00m1 stop

14:05 - 16:25LHR-YOW

7h 20mdirect

£461

Find Deal

Mon, 13 Oct - Mon, 20 Oct

18:55 - 09:45YOW-LGW

9h 50m1 stop

11:40 - 18:26LGW-YOW

11h 46m1 stop

£463Air Transat

Find Deal

Sat, 15 Nov - Wed, 19 Nov

14:50 - 07:10YOW-LHR

11h 20m1 stop

09:00 - 18:38LHR-YOW

14h 38m2 stops

£465

Find Deal

Tue, 25 Nov - Tue, 2 Dec

10:45 - 10:45YOW-LGW

19h 00m1 stop

11:40 - 16:51LGW-YOW

33h 11m1 stop

£474Porter Airlines

Find Deal

Wed, 8 Oct - Wed, 29 Oct

05:55 - 09:25YOW-LGW

22h 30m2 stops

10:45 - 00:22LGW-YOW

18h 37m2 stops

£475WestJet

Find Deal

Fri, 10 Oct - Fri, 17 Oct

14:20 - 10:45YOW-LGW

15h 25m1 stop

12:40 - 08:05LGW-YOW

24h 25m1 stop

£477Porter Airlines

Find Deal

Mon, 13 Oct - Mon, 20 Oct

05:55 - 09:25YOW-LGW

22h 30m2 stops

10:45 - 00:22LGW-YOW

18h 37m2 stops

£511WestJet

Find Deal

Mon, 29 Sep - Wed, 15 Oct

Air Canada flights from Ottawa to London

Our best Air Canada deals on Ottawa to London flight tickets

Air Canada

22 Oct

YOW16:05Ottawa

9h 25m

1 stop

LHR06:30London Heathrow

29 Oct

LHR13:25London Heathrow

12h 53m

1 stop

YOW22:18Ottawa

£455

Find similar

Air Canada

22 Oct

YOW07:00Ottawa

9h 00m

1 stop

LHR21:00London Heathrow

29 Oct

LHR09:00London Heathrow

28h 42m

2 stops

YOW09:42Ottawa

£456

Find similar

Air Canada

28 Oct

YOW14:50Ottawa

12h 20m

1 stop

LHR07:10London Heathrow

4 Nov

LHR09:00London Heathrow

13h 43m

1 stop

YOW17:43Ottawa

£458

Find similar

Lufthansa flights from Ottawa to London

Our best Lufthansa deals on Ottawa to London flight tickets

Lufthansa

29 Sept

YOW18:55Ottawa

6h 35m

LHR06:30London Heathrow

9 Oct

LHR14:05London Heathrow

7h 20m

YOW16:25Ottawa

£500

Find similar

Lufthansa

27 Sept

YOW20:55Ottawa

28h 35m

1 stop

LHR06:30London Heathrow

4 Oct

LHR09:30London Heathrow

12h 49m

1 stop

YOW17:19Ottawa

£541

Find similar

Lufthansa

26 Feb

YOW12:05Ottawa

24h 35m

2 stops

LCY17:40London City

2 Mar

LCY09:50London City

37h 48m

2 stops

YOW18:38Ottawa

£568

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 22/10

16:05-06:30

1 stop9h 25m

London Heathrow

Wed 29/10

13:25-22:18

1 stop12h 53m

£455

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 22/10

07:00-21:00

1 stop9h 00m

London Heathrow

Wed 29/10

09:00-09:42

2 stops28h 42m

£456

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 28/9

14:20-10:45

1 stop15h 25m

London Gatwick

Fri 10/10

12:40-00:21

1 stop16h 41m

£460

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 13/10

07:00-21:00

1 stop9h 00m

London Heathrow

Mon 20/10

14:05-16:25

Nonstop7h 20m

£461

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 15/11

18:55-09:45

1 stop9h 50m

London Gatwick

Wed 19/11

11:40-18:26

1 stop11h 46m

£463

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 25/11

14:50-07:10

1 stop11h 20m

London Heathrow

Tue 2/12

09:00-18:38

2 stops14h 38m

£465

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 8/10

10:45-10:45

1 stop19h 00m

London Gatwick

Wed 29/10

11:40-16:51

1 stop33h 11m

£474

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 10/10

05:55-09:25

2 stops22h 30m

London Gatwick

Fri 17/10

10:45-00:22

2 stops18h 37m

£475

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 13/10

14:20-10:45

1 stop15h 25m

London Gatwick

Mon 20/10

12:40-08:05

1 stop24h 25m

£477

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 29/9

05:55-09:25

2 stops22h 30m

London Gatwick

Wed 15/10

10:45-00:22

2 stops18h 37m

£511

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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

Stopovers

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?

The cheapest month to fly to London from Ottawa is in February. Flight prices, which tend to average around £481, are often lower during this time because this is during the off-season. The month of March is another great option to travel to London, with average flight prices from Ottawa averaging around £522.

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

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £535. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to London for around £609.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £550. Flights at midday are often more expensive, with an average ticket price of £656.

What is the cheapest Ottawa to London flight route?

Fly from Ottawa to London Heathrow 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 £571 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Ottawa for as low as £528 on momondo.

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

There are 2 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 18% 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 September 2025, prices for Ottawa to London flights are approximately 27% 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 return 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	£641
Fastest flight time	6h 35m
Direct flights	Tue, Thu, Fri and Sun
Airports in London	1 airport

The best flight deal from Ottawa to London found on momondo in the last 72 hours is £641

The fastest flight from Ottawa to London takes 6h 35m

Direct flights go from Ottawa to London on Tuesday, Thursday, Friday and Sunday. Airline offering direct flights is Air Canada..

There is 1 airport near London: London Heathrow (LHR)

Search flight deals

How far is Ottawa to London by plane?
The straight-line distance from Ottawa to London is 3329.4 mi. By plane, this route typically takes 6h 35m.
When did momondo last update prices for flights from Ottawa Airport to London?
Prices for flights from Ottawa Airport to London are updated daily.
How many operators does momondo search for flights from Ottawa Airport to London?
There is 1 operator available for flights from Ottawa Airport to London as of September 2025.
How old do you have to be to fly from Ottawa Airport to London?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 787-9 Dreamliner, making up 67.61% of the total bookings. Other popular models include Airbus A330-300 with 7.04%, Airbus A321neo with 5.63%, and Boeing 787-8 Dreamliner with 5.63%.
What is the most popular airline from Ottawa to London?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ottawa to London is Air Canada (100% of total bookings).

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 Canada	PriceFrom £446	Free Cancellation	Rating 7.1 10,000 reviews		Search Air Canada flights

Air Canada Flights From Ottawa to London
Across 2 Air Canada flights from Ottawa to London this week, the average price was £825, with the best Air Canada deals starting from £606 round-trip. 10,000 users have rated Air Canada on momondo, with an average score of 7.1/10.

Eastbourne

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Milton Keynes

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Gatwick

Slough

Canterbury

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Ipswich

Ilford

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Colchester

Worthing

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Dartford

Winchester

Hounslow

Stansted

Why use momondo?

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

It is quick and easy to find Ottawa to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Yes. momondo enables you to select and highlight flights to London from Ottawa with this policy.

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

momondo helps you find the best flight between Ottawa and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Ottawa and alert you when they change.

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Cheap flights from Ottawa to London from £174

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 14/10. 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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Filter for what you want

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Find the cheapest flights from Ottawa to London

Cheap return flights

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Air Canada flights from Ottawa to London

Our best Air Canada deals on Ottawa to London flight tickets

Lufthansa flights from Ottawa to London

Our best Lufthansa deals on Ottawa to London flight tickets

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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

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?

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £535. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to London for around £609.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £550. Flights at midday are often more expensive, with an average ticket price of £656.

What is the cheapest Ottawa to London flight route?

Fly from Ottawa to London Heathrow 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 2 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 18% 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 September 2025, prices for Ottawa to London flights are approximately 27% 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?

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

Toronto (YYZ) was the most common stop: 80% of momondo users choosing one-stop flights on this route connected there.

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

Flights via Halifax (YHZ) offer the lowest average return price of £610.

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

Toronto (YYZ) has the shortest average stopover time for this route: 2h 33m.

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

3 flights are operational daily from Ottawa to London as of September 2025. The most popular departure time for this route is 21:00, with 100% of flights per day taking off in the evening.

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

24 flights are operational weekly from Ottawa to London as of September 2025. The most popular departure day for this route is Mon, with 29% of flights per week taking off 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

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?

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

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

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down