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 12m.

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

WestJet is the most popular carrier operating from Ottawa to London

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

Toronto (YYZ) was the most common stop: 42% 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 Calgary (YYC) offer the lowest average round-trip price of C$ 836.

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 12 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 24 per week as of August 2025. The most frequent departure day is Mon, with 29% of weekly flights leaving on this day.

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

As of August 2025, 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 layover airport has the shortest connection time from Ottawa to London?

Montreal (YUL) has the shortest average layover time for this route: 1h 50m.

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 August 2025, there are 8 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$ 351 Cheap Flights from Ottawa to London (YOW-LON) in 2025

1 adult

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Find the cheapest flights from Ottawa to London (YOW-LON)

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

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

9h 50m1 stop

11:40 a.m. - 6:26 p.m.LGW-YOW

11h 46m1 stop

C$ 971Air Transat

Find Deal

Sat, 17 Jan - Fri, 23 Jan

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

22h 00m1 stop

11:40 a.m. - 6:26 p.m.LGW-YOW

11h 46m1 stop

C$ 972Air Transat

Find Deal

Sat, 7 Feb - Thu, 19 Feb

6:40 p.m. - 11:50 a.m.YOW-LHR

12h 10m2 stops

9:30 a.m. - 5:04 p.m.LHR-YOW

12h 34m2 stops

C$ 974Air Canada

Find Deal

Mon, 29 Sep - Wed, 8 Oct

8:35 a.m. - 10:45 a.m.YOW-LGW

21h 10m1 stop

12:40 p.m. - 9:00 p.m.LGW-YOW

13h 20m1 stop

C$ 974Air Transat

Find Deal

Sun, 28 Sep - Tue, 7 Oct

9:00 p.m. - 8:35 a.m.YOW-LHR

6h 35mdirect

12:40 p.m. - 3:00 p.m.LHR-YOW

7h 20mdirect

C$ 975Air Canada

Find Deal

Sat, 11 Oct - Sat, 18 Oct

9:00 p.m. - 8:35 a.m.YOW-LHR

6h 35mdirect

12:40 p.m. - 3:00 p.m.LHR-YOW

7h 20mdirect

C$ 985Lufthansa

Find Deal

Wed, 17 Sep - Wed, 1 Oct

10:25 a.m. - 5:55 a.m.YOW-LHR

14h 30m2 stops

6:50 a.m. - 4:43 p.m.LHR-YOW

14h 53m2 stops

C$ 1,013United Airlines

Find Deal

Thu, 25 Sep - Thu, 9 Oct

7:29 p.m. - 6:55 a.m.YOW-LHR

30h 26m1 stop

6:50 a.m. - 4:43 p.m.LHR-YOW

14h 53m2 stops

C$ 1,014United Airlines

Find Deal

Wed, 17 Sep - Wed, 1 Oct

6:55 p.m. - 6:30 a.m.YOW-LHR

6h 35mdirect

2:05 p.m. - 4:25 p.m.LHR-YOW

7h 20mdirect

C$ 1,058Lufthansa

Find Deal

Thu, 25 Sep - Thu, 9 Oct

5:20 p.m. - 8:00 a.m.YOW-LHR

9h 40m1 stop

8:55 a.m. - 3:10 p.m.LHR-YOW

11h 15m1 stop

C$ 1,086Air France

Find Deal

Wed, 24 Dec - Mon, 29 Dec

Lufthansa flights from Ottawa to London

Our best Lufthansa deals on Ottawa to London flight tickets

Lufthansa

17 Sep

YOW9:00 p.m.Ottawa

6h 35m

LHR8:35 a.m.London Heathrow

1 Oct

LHR12:40 p.m.London Heathrow

7h 20m

YOW3:00 p.m.Ottawa

C$ 985

Find similar

Lufthansa

25 Sep

YOW6:55 p.m.Ottawa

6h 35m

LHR6:30 a.m.London Heathrow

9 Oct

LHR2:05 p.m.London Heathrow

7h 20m

YOW4:25 p.m.Ottawa

C$ 1,058

Find similar

Lufthansa

27 Sep

YOW9:00 p.m.Ottawa

6h 35m

LHR8:35 a.m.London Heathrow

4 Oct

LHR12:40 p.m.London Heathrow

7h 20m

YOW3:00 p.m.Ottawa

C$ 1,093

Find similar

United Airlines flights from Ottawa to London

Our best United Airlines deals on Ottawa to London flight tickets

United Airlines

25 Sep

YOW10:25 a.m.Ottawa

14h 30m

2 stops

LHR5:55 a.m.London Heathrow

9 Oct

LHR6:50 a.m.London Heathrow

14h 53m

2 stops

YOW4:43 p.m.Ottawa

C$ 1,013

Find similar

United Airlines

17 Sep

YOW7:29 p.m.Ottawa

30h 26m

1 stop

LHR6:55 a.m.London Heathrow

1 Oct

LHR6:50 a.m.London Heathrow

14h 53m

2 stops

YOW4:43 p.m.Ottawa

C$ 1,014

Find similar

United Airlines

17 Sep

YOW11:55 a.m.Ottawa

17h 45m

2 stops

LHR10:40 a.m.London Heathrow

1 Oct

LHR6:50 a.m.London Heathrow

14h 53m

2 stops

YOW4:43 p.m.Ottawa

C$ 1,021

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 17/1

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

1 stop9h 50m

London Gatwick

Fri 23/1

11:40 a.m.-6:26 p.m.

1 stop11h 46m

C$ 971

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 7/2

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

1 stop22h 00m

London Gatwick

Thu 19/2

11:40 a.m.-6:26 p.m.

1 stop11h 46m

C$ 972

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 29/9

6:40 p.m.-11:50 a.m.

2 stops12h 10m

London Heathrow

Wed 8/10

9:30 a.m.-5:04 p.m.

2 stops12h 34m

C$ 974

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 28/9

8:35 a.m.-10:45 a.m.

1 stop21h 10m

London Gatwick

Tue 7/10

12:40 p.m.-9:00 p.m.

1 stop13h 20m

C$ 974

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 11/10

9:00 p.m.-8:35 a.m.

Nonstop6h 35m

London Heathrow

Sat 18/10

12:40 p.m.-3:00 p.m.

Nonstop7h 20m

C$ 975

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 17/9

9:00 p.m.-8:35 a.m.

Nonstop6h 35m

London Heathrow

Wed 1/10

12:40 p.m.-3:00 p.m.

Nonstop7h 20m

C$ 985

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 25/9

10:25 a.m.-5:55 a.m.

2 stops14h 30m

London Heathrow

Thu 9/10

6:50 a.m.-4:43 p.m.

2 stops14h 53m

C$ 1,013

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 17/9

7:29 p.m.-6:55 a.m.

1 stop30h 26m

London Heathrow

Wed 1/10

6:50 a.m.-4:43 p.m.

2 stops14h 53m

C$ 1,014

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 25/9

6:55 p.m.-6:30 a.m.

Nonstop6h 35m

London Heathrow

Thu 9/10

2:05 p.m.-4:25 p.m.

Nonstop7h 20m

C$ 1,058

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 24/12

5:20 p.m.-8:00 a.m.

1 stop9h 40m

London Heathrow

Mon 29/12

8:55 a.m.-3:10 p.m.

1 stop11h 15m

C$ 1,086

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

Other information

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$ 909. If you aren’t able to travel to London during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of C$ 982.

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

According to our data, Friday is the cheapest day to fly to London from Ottawa. The lowest ticket price found for a Friday departure recently was C$ 1,083. 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$ 1,288.

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$ 1,076. At noon is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,136 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$ 1,074 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$ 996 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 13% 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 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$ 1,013
Fastest flight time	6h 35m
Direct flights	Tue, Thu, Fri and Sun
Airports in London	1 airport

The best one-way flight to London from Ottawa in the past 72 hours is C$ 1,013. The best round-trip flight deal from Ottawa to London found on momondo in the last 72 hours is C$ 1,098.

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

Direct flights go from Ottawa to London on Tuesday, Thursday, Friday and Sunday. 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 35m.
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 August 2025, there are 8 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 72.60% of the total bookings. Other popular models include Airbus A321neo with 5.48%, Boeing 787-8 Dreamliner with 5.48%, and Airbus A330-200 with 4.11%.
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 66% of all bookings. The subsequent popular airlines are Lufthansa at 8%, Air France at 8%, and Air Transat 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
Virgin Atlantic	PriceFrom C$ 733	Free Cancellation	Rating 7.4 657 reviews	Search Virgin Atlantic flights
Air France	PriceFrom C$ 733	Free Cancellation	Rating 7.4 1,469 reviews	Search Air France flights
Air Transat	PriceFrom C$ 797	Free Cancellation	Rating 7.7 430 reviews	Search Air Transat flights
KLM	PriceFrom C$ 831	Free Cancellation	Rating 7.8 1,388 reviews	Search KLM flights
United Airlines	PriceFrom C$ 892	Free Cancellation	Rating 7.4 8,928 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 906	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
Porter Airlines	PriceFrom C$ 910	Free Cancellation	Rating 8.0 336 reviews	Search Porter Airlines flights
Lufthansa	PriceFrom C$ 958	Free Cancellation	Rating 6.8 7,337 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$ 645. Generally, United Airlines has 4 flights on this route every week with an average price of C$ 714. 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, 10,000 ratings). Air Canada flies from Ottawa to London around 4 times per week, with deals starting from C$ 655 round-trip and rising to an average price of around C$ 763.

Hounslow

Ipswich

Gatwick

Dartford

Canterbury

Crawley

Ilford

Wembley

Maidstone

Chelmsford

Wokingham

Feltham

Hayes

Uxbridge

Waterlooville

Newport

Basingstoke

Milton Keynes

Dover

Worthing

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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Flights to Edinburghfrom C$ 671

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Flights to Birminghamfrom C$ 723

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Flights to Bristolfrom C$ 729

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Flights to Liverpoolfrom C$ 718

Flights to Leedsfrom C$ 722

Flights to Cardifffrom C$ 943

Flights to Invernessfrom C$ 725

Cheap flights from Ottawa to London from C$ 351

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 18/11. 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

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Filter for what you want

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Find the cheapest flights from Ottawa to London (YOW-LON)

Cheap round-trip 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

United Airlines flights from Ottawa to London

Our best United Airlines 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 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 morning. Flights from Ottawa to London during this time can be as low as C$ 1,076. At noon is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,136 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?

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 13% 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 layover for flights between Ottawa and London?

Toronto (YYZ) was the most common stop: 42% 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 Calgary (YYC) offer the lowest average round-trip price of C$ 836.

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 12m.

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

Montreal (YUL) has the shortest average layover time for this route: 1h 50m.

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

As of August 2025, 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 24 per week as of August 2025. The most frequent departure day is Mon, with 29% 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?

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, organize 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.