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

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 844.

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

Toronto (YYZ) was the most common stop: 59% 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 62% 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.

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.

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

WestJet is the most popular carrier operating from Ottawa to London

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 October 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$ 352 Cheap Flights from Ottawa to London in 2025/26

1 adult

Discover deals from 900+ travel sites with momondo.

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? Early arrival? Instantly customize 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 round-trip flights

Enter your travel dates to find the best prices.

10:50 a.m. - 8:35 p.m.YOW-LHR

28h 45m2 stops

6:00 a.m. - 6:38 p.m.LHR-YOW

17h 38m2 stops

C$ 894Multiple Airlines

Find Deal

Thu, 13 Nov - Tue, 18 Nov

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$ 896Air Transat

Find Deal

Fri, 28 Nov - Sun, 30 Nov

9:55 p.m. - 9:20 a.m.YOW-LHR

6h 25mdirect

9:00 a.m. - 5:42 p.m.LHR-YOW

13h 42m2 stops

C$ 898Multiple Airlines

Find Deal

Wed, 26 Nov - Wed, 3 Dec

2:50 p.m. - 7:10 a.m.YOW-LHR

11h 20m1 stop

9:00 a.m. - 5:43 p.m.LHR-YOW

13h 43m1 stop

C$ 901Air Canada

Find Deal

Wed, 3 Dec - Thu, 11 Dec

9:55 p.m. - 9:20 a.m.YOW-LHR

6h 25mdirect

12:00 p.m. - 2:30 p.m.LHR-YOW

7h 30mdirect

C$ 908Air Canada

Find Deal

Sun, 9 Nov - Sun, 16 Nov

9:55 p.m. - 9:20 a.m.YOW-LHR

6h 25mdirect

8:45 a.m. - 10:18 p.m.LHR-YOW

18h 33m2 stops

C$ 909Lufthansa

Find Deal

Wed, 26 Nov - Wed, 10 Dec

9:55 p.m. - 9:20 a.m.YOW-LHR

6h 25mdirect

12:00 p.m. - 2:30 p.m.LHR-YOW

7h 30mdirect

C$ 929Lufthansa

Find Deal

Wed, 3 Dec - Wed, 10 Dec

11:10 a.m. - 5:55 a.m.YOW-LHR

13h 45m1 stop

6:50 a.m. - 4:32 p.m.LHR-YOW

14h 42m2 stops

C$ 987United Airlines

Find Deal

Tue, 25 Nov - Tue, 2 Dec

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

9h 50m1 stop

11:40 a.m. - 6:24 p.m.LGW-YOW

11h 44m1 stop

C$ 1,022Porter Airlines

Find Deal

Sun, 23 Nov - Sun, 30 Nov

3:00 p.m. - 9:45 a.m.YOW-LGW

13h 45m1 stop

11:40 a.m. - 12:41 a.m.LGW-YOW

18h 01m1 stop

C$ 1,131Porter Airlines

Find Deal

Wed, 10 Dec - Tue, 16 Dec

Air Canada flights from Ottawa to London

Our best Air Canada deals on Ottawa to London flight tickets

Air Canada

3 Dec

YOW2:50 p.m.Ottawa

11h 20m

1 stop

LHR7:10 a.m.London Heathrow

11 Dec

LHR9:00 a.m.London Heathrow

13h 43m

1 stop

YOW5:43 p.m.Ottawa

C$ 901

Find similar

Air Canada

9 Nov

YOW9:55 p.m.Ottawa

6h 25m

LHR9:20 a.m.London Heathrow

16 Nov

LHR12:00 p.m.London Heathrow

7h 30m

YOW2:30 p.m.Ottawa

C$ 908

Find similar

Air Canada

19 Nov

YOW10:30 a.m.Ottawa

15h 40m

2 stops

LHR7:10 a.m.London Heathrow

27 Nov

LHR6:50 a.m.London Heathrow

14h 28m

2 stops

YOW4:18 p.m.Ottawa

C$ 915

Find similar

Lufthansa flights from Ottawa to London

Our best Lufthansa deals on Ottawa to London flight tickets

Lufthansa

26 Nov

YOW9:55 p.m.Ottawa

6h 25m

LHR9:20 a.m.London Heathrow

10 Dec

LHR8:45 a.m.London Heathrow

18h 33m

2 stops

YOW10:18 p.m.Ottawa

C$ 909

Find similar

Lufthansa

3 Dec

YOW9:55 p.m.Ottawa

6h 25m

LHR9:20 a.m.London Heathrow

10 Dec

LHR12:00 p.m.London Heathrow

7h 30m

YOW2:30 p.m.Ottawa

C$ 929

Find similar

Lufthansa

20 Mar

YOW10:55 p.m.Ottawa

6h 25m

LHR9:20 a.m.London Heathrow

27 Mar

LHR12:00 p.m.London Heathrow

7h 30m

YOW3:30 p.m.Ottawa

C$ 937

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 13/11

10:50 a.m.-8:35 p.m.

2 stops28h 45m

London Heathrow

Tue 18/11

6:00 a.m.-6:38 p.m.

2 stops17h 38m

C$ 894

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 28/11

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

1 stop18h 45m

London Gatwick

Sun 30/11

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

1 stop25h 45m

C$ 896

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 26/11

9:55 p.m.-9:20 a.m.

Nonstop6h 25m

London Heathrow

Wed 3/12

9:00 a.m.-5:42 p.m.

2 stops13h 42m

C$ 898

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 3/12

2:50 p.m.-7:10 a.m.

1 stop11h 20m

London Heathrow

Thu 11/12

9:00 a.m.-5:43 p.m.

1 stop13h 43m

C$ 901

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 9/11

9:55 p.m.-9:20 a.m.

Nonstop6h 25m

London Heathrow

Sun 16/11

12:00 p.m.-2:30 p.m.

Nonstop7h 30m

C$ 908

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 26/11

9:55 p.m.-9:20 a.m.

Nonstop6h 25m

London Heathrow

Wed 10/12

8:45 a.m.-10:18 p.m.

2 stops18h 33m

C$ 909

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 3/12

9:55 p.m.-9:20 a.m.

Nonstop6h 25m

London Heathrow

Wed 10/12

12:00 p.m.-2:30 p.m.

Nonstop7h 30m

C$ 929

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 25/11

11:10 a.m.-5:55 a.m.

1 stop13h 45m

London Heathrow

Tue 2/12

6:50 a.m.-4:32 p.m.

2 stops14h 42m

C$ 987

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 23/11

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

1 stop9h 50m

London Gatwick

Sun 30/11

11:40 a.m.-6:24 p.m.

1 stop11h 44m

C$ 1,022

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 10/12

3:00 p.m.-9:45 a.m.

1 stop13h 45m

London Gatwick

Tue 16/12

11:40 a.m.-12:41 a.m.

1 stop18h 01m

C$ 1,131

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

Layovers

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$ 899. If you aren’t able to travel to London during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of C$ 990.

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

According to our data, Thursday is the cheapest day to fly to London from Ottawa. The lowest ticket price found for a Thursday departure recently was C$ 1,097. 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$ 1,300.

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$ 1,086. At noon is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,147 per ticket.

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 C$ 1,083 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$ 994 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 20% 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 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$ 983
Fastest flight time	6h 25m
Direct flights	Mon, Thu and Sat
Airports in London	1 airport

The best one-way flight to London from Ottawa in the past 72 hours is C$ 983. The best round-trip flight deal from Ottawa to London found on momondo in the last 72 hours is C$ 1,004.

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?
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 October 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 787-9 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?
momondo data reveals that the most frequently booked airline on the route from Ottawa to London is Air Canada, representing 69% of all bookings. The subsequent popular airlines are Lufthansa at 9%, Air Transat at 6%, and Air France 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$ 690	Free Cancellation	Rating 7.8 469 reviews	Search Air Transat flights
Air France	PriceFrom C$ 738	Free Cancellation	Rating 7.4 1,482 reviews	Search Air France flights
Virgin Atlantic	PriceFrom C$ 740	Free Cancellation	Rating 7.5 671 reviews	Search Virgin Atlantic flights
Porter Airlines	PriceFrom C$ 794	Free Cancellation	Rating 8.0 384 reviews	Search Porter Airlines flights
United Airlines	PriceFrom C$ 900	Free Cancellation	Rating 7.4 8,996 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 904	Free Cancellation	Rating 7.1 10,383 reviews	Search Air Canada flights
Lufthansa	PriceFrom C$ 968	Free Cancellation	Rating 6.8 7,542 reviews	Search Lufthansa flights

Hounslow

Ipswich

Dartford

Gatwick

Ilford

Chelmsford

Wokingham

Slough

Canterbury

Feltham

Hayes

Uxbridge

Wembley

Waterlooville

Newport

Basingstoke

Milton Keynes

Dover

Worthing

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.