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

Flights via Halifax (YHZ) offer the lowest average return price of £629.

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 connection time from Ottawa to London?

Montreal (YUL) has the shortest average stopover time for this route: 2h 39m.

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 72% of people opting to fly with this airline when travelling to London. Keep in mind that there are 4 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 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 for stopovers 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.

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 October 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.

£190 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 £505 to £659. The lowest price recently found on this route was £486.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ottawa to London

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

10:50 - 20:35YOW-LHR

28h 45m2 stops

06:00 - 18:38LHR-YOW

17h 38m2 stops

£486Multiple Airlines

Find Deal

Thu, 13 Nov - Tue, 18 Nov

10:00 - 09:45YOW-LGW

18h 45m1 stop

11:40 - 08:25LGW-YOW

25h 45m1 stop

£487Air Transat

Find Deal

Fri, 28 Nov - Sun, 30 Nov

12:05 - 06:30YOW-LHR

13h 25m1 stop

12:00 - 14:30LHR-YOW

7h 30mdirect

£494Air Canada

Find Deal

Sat, 15 Nov - Wed, 19 Nov

10:50 - 07:10YOW-LHR

15h 20m1 stop

06:50 - 16:18LHR-YOW

14h 28m2 stops

£497Air Canada

Find Deal

Wed, 19 Nov - Thu, 27 Nov

16:15 - 08:30YOW-LHR

11h 15m1 stop

12:00 - 14:30LHR-YOW

7h 30mdirect

£515Lufthansa

Find Deal

Mon, 2 Mar - Fri, 6 Mar

14:05 - 08:30YOW-LHR

13h 25m1 stop

12:00 - 14:30LHR-YOW

7h 30mdirect

£516Lufthansa

Find Deal

Mon, 2 Mar - Fri, 6 Mar

10:20 - 08:05YOW-LHR

16h 45m2 stops

09:50 - 19:18LHR-YOW

14h 28m2 stops

£525Aer Lingus

Find Deal

Thu, 4 Dec - Thu, 8 Jan

10:20 - 08:05YOW-LHR

16h 45m2 stops

08:50 - 19:18LHR-YOW

15h 28m2 stops

£528Aer Lingus

Find Deal

Thu, 11 Dec - Tue, 16 Dec

11:10 - 06:40YOW-LHR

14h 30m2 stops

06:50 - 16:32LHR-YOW

14h 42m2 stops

£537United Airlines

Find Deal

Wed, 26 Nov - Wed, 3 Dec

15:10 - 10:50YOW-LHR

14h 40m2 stops

06:50 - 16:32LHR-YOW

14h 42m2 stops

£538United Airlines

Find Deal

Wed, 3 Dec - Tue, 9 Dec

Lufthansa flights from Ottawa to London

Our best Lufthansa deals on Ottawa to London flight tickets

Lufthansa

2 Mar

YOW16:15Ottawa

11h 15m

1 stop

LHR08:30London Heathrow

6 Mar

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£515

Find similar

Lufthansa

2 Mar

YOW14:05Ottawa

13h 25m

1 stop

LHR08:30London Heathrow

6 Mar

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£516

Find similar

Lufthansa

5 Nov

YOW21:55Ottawa

6h 25m

LHR09:20London Heathrow

23 Nov

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£589

Find similar

Air Canada flights from Ottawa to London

Our best Air Canada deals on Ottawa to London flight tickets

Air Canada

9 Nov

YOW21:55Ottawa

6h 25m

LHR09:20London Heathrow

16 Nov

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£489

Find similar

Air Canada

9 Nov

YOW21:55Ottawa

6h 25m

LHR09:20London Heathrow

16 Nov

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£493

Find similar

Air Canada

15 Nov

YOW12:05Ottawa

13h 25m

1 stop

LHR06:30London Heathrow

19 Nov

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£494

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 13/11

10:50-20:35

2 stops28h 45m

London Heathrow

Tue 18/11

06:00-18:38

2 stops17h 38m

£486

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 28/11

10:00-09:45

1 stop18h 45m

London Gatwick

Sun 30/11

11:40-08:25

1 stop25h 45m

£487

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 15/11

12:05-06:30

1 stop13h 25m

London Heathrow

Wed 19/11

12:00-14:30

Nonstop7h 30m

£494

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 19/11

10:50-07:10

1 stop15h 20m

London Heathrow

Thu 27/11

06:50-16:18

2 stops14h 28m

£497

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 2/3

16:15-08:30

1 stop11h 15m

London Heathrow

Fri 6/3

12:00-14:30

Nonstop7h 30m

£515

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 2/3

14:05-08:30

1 stop13h 25m

London Heathrow

Fri 6/3

12:00-14:30

Nonstop7h 30m

£516

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 4/12

10:20-08:05

2 stops16h 45m

London Heathrow

Thu 8/1

09:50-19:18

2 stops14h 28m

£525

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 11/12

10:20-08:05

2 stops16h 45m

London Heathrow

Tue 16/12

08:50-19:18

2 stops15h 28m

£528

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 26/11

11:10-06:40

2 stops14h 30m

London Heathrow

Wed 3/12

06:50-16:32

2 stops14h 42m

£537

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 3/12

15:10-10:50

2 stops14h 40m

London Heathrow

Tue 9/12

06:50-16:32

2 stops14h 42m

£538

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

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 £489, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from Ottawa averaging around £538.

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 £552. 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 £628.

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 £567. Flights at midday are often more expensive, with an average ticket price of £677.

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 £589 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 £540 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 October 2025, prices for Ottawa to London flights are approximately 1% 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 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	£532
Fastest flight time	6h 25m
Direct flights	Mon, Thu and Sat
Airports in London	1 airport

The best flight deal from Ottawa to London found on momondo in the last 72 hours is £532

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

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

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 25m.
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 October 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 72.52% of the total bookings. Other popular models include Boeing 787-8 Dreamliner with 14.70%, Airbus A330-300 with 8.63%, and Airbus A321neo with 0.96%.
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 £460	Free Cancellation	Rating 7.1 10,381 reviews		Search Air Canada flights

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Colchester

Dover

Hayes

Chelmsford

Worthing

Dartford

Ramsgate

Bedford

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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Sun 30/11

Sun 7/12

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

London City Airport

London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Southend Airport

London Stansted Airport

Popular Cities in the United Kingdom

Flights to Manchesterfrom £33

Flights to Birminghamfrom £33

Flights to Edinburghfrom £28

Flights to Belfastfrom £30

Flights to Glasgowfrom £32

Flights to Bristolfrom £32

Flights to Newcastle upon Tynefrom £30

Flights to Aberdeenfrom £46

Flights to Liverpoolfrom £30

Flights to Leedsfrom £69

Flights to Invernessfrom £38

Flights to Newquayfrom £33

Cheap flights from Ottawa to London from £190

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 30/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ottawa to London

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Lufthansa flights from Ottawa to London

Our best Lufthansa 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

momondo Fare Finder

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

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 £552. 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 £628.

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 £567. Flights at midday are often more expensive, with an average ticket price of £677.

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 October 2025, prices for Ottawa to London flights are approximately 1% more expensive 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: 73% 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 £629.

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?

Montreal (YUL) has the shortest average stopover time for this route: 2h 39m.

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

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.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London