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

WestJet is the most popular carrier operating from Ottawa to London

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 August 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 August 2025. The most popular departure day for this route is Wed, with 29% of flights per week taking off on this day.

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 65% 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 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 £626.

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 August 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.

£191 Cheap Flights from Ottawa to London in 2025

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Find the cheapest flights from Ottawa to London

Round-trip

One-way

Last minute

Direct

Cheap return flights

06:20 - 05:55YOW-LHR

19h 35m1 stop

09:00 - 23:54LHR-YOW

19h 54m2 stops

£484United Airlines

Find Deal

Fri, 31 Oct - Thu, 6 Nov

10:30 - 06:20YOW-LHR

14h 50m2 stops

06:50 - 16:32LHR-YOW

14h 42m2 stops

£487United Airlines

Find Deal

Thu, 13 Nov - Fri, 28 Nov

05:55 - 09:50YOW-LGW

22h 55m2 stops

11:35 - 00:22LGW-YOW

17h 47m2 stops

£496

Find Deal

Thu, 18 Sep - Thu, 9 Oct

10:50 - 06:20YOW-LGW

14h 30m1 stop

13:05 - 14:56LGW-YOW

30h 51m1 stop

£504

Find Deal

Mon, 8 Sep - Wed, 17 Sep

17:05 - 07:55YOW-LGW

9h 50m1 stop

12:40 - 20:35LGW-YOW

12h 55m1 stop

£526Air Transat

Find Deal

Sun, 17 Aug - Thu, 4 Sep

14:40 - 09:35YOW-LHR

13h 55m1 stop

14:05 - 16:25LHR-YOW

7h 20mdirect

£527Air Canada

Find Deal

Thu, 9 Oct - Mon, 13 Oct

11:20 - 07:55YOW-LGW

15h 35m1 stop

12:40 - 20:01LGW-YOW

12h 21m1 stop

£528Air Transat

Find Deal

Sun, 17 Aug - Thu, 28 Aug

18:40 - 09:35YOW-LHR

9h 55m1 stop

09:30 - 22:04LHR-YOW

17h 34m1 stop

£529Lufthansa

Find Deal

Mon, 6 Oct - Thu, 23 Oct

21:00 - 08:35YOW-LHR

6h 35mdirect

12:40 - 15:00LHR-YOW

7h 20mdirect

£530Lufthansa

Find Deal

Wed, 8 Oct - Wed, 15 Oct

07:00 - 21:00YOW-LHR

9h 00m1 stop

09:00 - 17:31LHR-YOW

12h 31m1 stop

£533Air Canada

Find Deal

Sun, 19 Oct - Sun, 26 Oct

United Airlines flights from Ottawa to London

Our best United Airlines deals on Ottawa to London flight tickets

United Airlines

31 Oct

YOW06:20Ottawa

19h 35m

1 stop

LHR05:55London Heathrow

6 Nov

LHR09:00London Heathrow

19h 54m

2 stops

YOW23:54Ottawa

£484

Find similar

United Airlines

13 Nov

YOW10:30Ottawa

14h 50m

2 stops

LHR06:20London Heathrow

28 Nov

LHR06:50London Heathrow

14h 42m

2 stops

YOW16:32Ottawa

£487

Find similar

United Airlines

9 Sept

YOW17:50Ottawa

11h 20m

1 stop

LHR10:10London Heathrow

24 Sept

LHR06:50London Heathrow

14h 53m

2 stops

YOW16:43Ottawa

£489

Find similar

Lufthansa flights from Ottawa to London

Our best Lufthansa deals on Ottawa to London flight tickets

Lufthansa

6 Oct

YOW18:40Ottawa

9h 55m

1 stop

LHR09:35London Heathrow

23 Oct

LHR09:30London Heathrow

17h 34m

1 stop

YOW22:04Ottawa

£529

Find similar

Lufthansa

8 Oct

YOW21:00Ottawa

6h 35m

LHR08:35London Heathrow

15 Oct

LHR12:40London Heathrow

7h 20m

YOW15:00Ottawa

£530

Find similar

Lufthansa

21 Oct

YOW18:40Ottawa

9h 55m

1 stop

LHR09:35London Heathrow

25 Oct

LHR12:40London Heathrow

7h 20m

YOW15:00Ottawa

£531

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 31/10

06:20-05:55

1 stop19h 35m

London Heathrow

Thu 6/11

09:00-23:54

2 stops19h 54m

£484

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 13/11

10:30-06:20

2 stops14h 50m

London Heathrow

Fri 28/11

06:50-16:32

2 stops14h 42m

£487

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 18/9

05:55-09:50

2 stops22h 55m

London Gatwick

Thu 9/10

11:35-00:22

2 stops17h 47m

£496

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 8/9

10:50-06:20

1 stop14h 30m

London Gatwick

Wed 17/9

13:05-14:56

1 stop30h 51m

£504

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 17/8

17:05-07:55

1 stop9h 50m

London Gatwick

Thu 4/9

12:40-20:35

1 stop12h 55m

£526

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 9/10

14:40-09:35

1 stop13h 55m

London Heathrow

Mon 13/10

14:05-16:25

Nonstop7h 20m

£527

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 17/8

11:20-07:55

1 stop15h 35m

London Gatwick

Thu 28/8

12:40-20:01

1 stop12h 21m

£528

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 6/10

18:40-09:35

1 stop9h 55m

London Heathrow

Thu 23/10

09:30-22:04

1 stop17h 34m

£529

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 8/10

21:00-08:35

Nonstop6h 35m

London Heathrow

Wed 15/10

12:40-15:00

Nonstop7h 20m

£530

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 19/10

07:00-21:00

1 stop9h 00m

London Heathrow

Sun 26/10

09:00-17:31

1 stop12h 31m

£533

Flights are sorted by cheapest return 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

Stopovers

Other information

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 £496, 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 £536.

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 £549. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to London for around £600.

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 afternoon when flights can be purchased for as low as £549. Flights at midday are often more expensive, with an average ticket price of £674.

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 £587 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 £543 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 9% 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 August 2025, prices for Ottawa to London flights are approximately 39% 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	£191
Fastest flight time	6h 35m
Direct flights	Tue, Thu, Fri and Sun
Airports in London	6 airports

The best one-way flight to London from Ottawa in the past 72 hours is £191. The best return flight deal from Ottawa to London found on momondo in the last 72 hours is £484.

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

Direct flights go from Ottawa to London on Tuesday, Thursday, Friday and Sunday. Airlines offering direct flights are: Lufthansa and Air Canada..

There are 6 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW), London Southend (SEN)

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 August 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 71.88% of the total bookings. Other popular models include Airbus A321neo with 6.25%, Boeing 787-8 Dreamliner with 6.25%, and Airbus A330-200 with 4.69%.
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 £487	Free Cancellation	Rating 7.1 9,851 reviews		Search Air Canada flights

Air Canada Flights From Ottawa to London
Across 4 Air Canada flights from Ottawa to London this week, the average price was £822, with the best Air Canada deals starting from £644 round-trip. 9,851 users have rated Air Canada on momondo, with an average score of 7.1/10.

Eastbourne

Milton Keynes

Luton

Slough

Southend-on-Sea

Maidstone

Canterbury

Gatwick

Ipswich

Ilford

Dartford

Guildford

Colchester

Worthing

Hounslow

Dover

Winchester

Margate

Chelmsford

Bedford

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.

An easier way to manage your London trip

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Cheap flights from Ottawa to London from £191

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 4/11. 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

Filter for what you want

Filter for what you want

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Find the cheapest flights from Ottawa to London

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Cheap last-minute flights

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United Airlines flights from Ottawa to London

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

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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 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 £549. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to London for around £600.

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 afternoon when flights can be purchased for as low as £549. Flights at midday are often more expensive, with an average ticket price of £674.

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 9% 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 August 2025, prices for Ottawa to London flights are approximately 39% 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 £626.

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 August 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 August 2025. The most popular departure day for this route is Wed, 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

Daily price changes in your inbox - only with Price Alerts.