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Cheap flights from London to Ottawa from C$ 486

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Ottawa departing on 4/2. 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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Find the cheapest flights from London to Ottawa

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:25 p.m. - 5:16 p.m.
LHR
-
YOW
32h 51m2 stops
Multiple Airlines Logo
9:55 p.m. - 9:20 a.m.
YOW
-
LHR
6h 25mdirect
C$ 890Multiple Airlines
Wed, 25 Feb - Sun, 1 Mar
Multiple Airlines Logo
1:25 p.m. - 11:21 a.m.
LHR
-
YOW
26h 56m2 stops
Multiple Airlines Logo
9:55 p.m. - 9:20 a.m.
YOW
-
LHR
6h 25mdirect
C$ 891Multiple Airlines
Thu, 26 Feb - Wed, 4 Mar
Air Transat Logo
11:40 a.m. - 12:43 a.m.
LGW
-
YOW
18h 03m1 stop
Air Transat Logo
6:55 p.m. - 9:45 a.m.
YOW
-
LGW
9h 50m1 stop
C$ 893Air Transat
Tue, 17 Feb - Fri, 20 Feb
Virgin Atlantic Logo
9:00 a.m. - 3:05 p.m.
LHR
-
YOW
11h 05m1 stop
Virgin Atlantic Logo
5:15 p.m. - 8:00 a.m.
YOW
-
LHR
9h 45m1 stop
C$ 893Virgin Atlantic
Fri, 10 Apr - Sun, 19 Apr
Air France Logo
2:45 p.m. - 12:39 a.m.
LHR
-
YOW
14h 54m2 stops
Air France Logo
5:20 p.m. - 6:20 p.m.
YOW
-
LHR
20h 00m1 stop
C$ 896Air France
Wed, 25 Feb - Sun, 1 Mar
Air Transat Logo
12:40 p.m. - 8:25 a.m.
LGW
-
YOW
24h 45m1 stop
Air Transat Logo
3:05 p.m. - 10:45 a.m.
YOW
-
LGW
14h 40m1 stop
C$ 898Air Transat
Fri, 10 Apr - Sun, 19 Apr
Virgin Atlantic Logo
5:35 p.m. - 3:10 p.m.
LHR
-
YOW
26h 35m1 stop
Virgin Atlantic Logo
5:20 p.m. - 10:30 a.m.
YOW
-
LHR
12h 10m1 stop
C$ 901Virgin Atlantic
Wed, 25 Feb - Tue, 3 Mar
Air Canada Logo
9:00 a.m. - 5:43 p.m.
LHR
-
YOW
13h 43m1 stop
Air Canada Logo
10:30 a.m. - 7:10 a.m.
YOW
-
LHR
15h 40m2 stops
C$ 916Air Canada
Wed, 25 Feb - Wed, 4 Mar
Air Canada Logo
9:00 a.m. - 5:43 p.m.
LHR
-
YOW
13h 43m1 stop
Air Canada Logo
10:30 a.m. - 7:10 a.m.
YOW
-
LHR
15h 40m2 stops
C$ 918Air Canada
Wed, 25 Feb - Wed, 4 Mar
Lufthansa Logo
9:50 a.m. - 6:38 p.m.
LCY
-
YOW
13h 48m2 stops
Lufthansa Logo
2:05 p.m. - 5:35 p.m.
YOW
-
LCY
22h 30m2 stops
C$ 991Lufthansa
Tue, 13 Jan - Tue, 20 Jan

Air Transat flights from London to Ottawa

Our best Air Transat deals on London to Ottawa flight tickets
Air Transat
17 Feb
LGW11:40 a.m.London Gatwick
18h 03m
1 stop
YOW12:43 a.m.Ottawa
20 Feb
YOW6:55 p.m.Ottawa
9h 50m
1 stop
LGW9:45 a.m.London Gatwick
C$ 893
Find similar
Air Transat
10 Apr
LGW12:40 p.m.London Gatwick
24h 45m
1 stop
YOW8:25 a.m.Ottawa
19 Apr
YOW3:05 p.m.Ottawa
14h 40m
1 stop
LGW10:45 a.m.London Gatwick
C$ 898
Find similar
Air Transat
13 Mar
LGW11:40 a.m.London Gatwick
17h 01m
1 stop
YOW12:41 a.m.Ottawa
22 Mar
YOW6:55 p.m.Ottawa
10h 50m
1 stop
LGW9:45 a.m.London Gatwick
C$ 900
Find similar

Air Canada flights from London to Ottawa

Our best Air Canada deals on London to Ottawa flight tickets
Air Canada
25 Feb
LHR9:00 a.m.London Heathrow
13h 43m
1 stop
YOW5:43 p.m.Ottawa
4 Mar
YOW10:30 a.m.Ottawa
15h 40m
2 stops
LHR7:10 a.m.London Heathrow
C$ 916
Find similar
Air Canada
25 Feb
LHR12:00 p.m.London Heathrow
7h 30m
YOW2:30 p.m.Ottawa
3 Mar
YOW10:30 a.m.Ottawa
15h 40m
2 stops
LHR7:10 a.m.London Heathrow
C$ 918
Find similar
Air Canada
9 Jan
LHR9:00 a.m.London Heathrow
19h 08m
2 stops
YOW11:08 p.m.Ottawa
18 Jan
YOW4:40 p.m.Ottawa
22h 55m
1 stop
LHR8:35 p.m.London Heathrow
C$ 922
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 18 December 2025.
Use the filters below to find and compare flights from London to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 25/2

1:25 p.m.-5:16 p.m.

2 stops32h 51m

Ottawa

Sun 1/3

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

Nonstop6h 25m

C$ 890

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 26/2

1:25 p.m.-11:21 a.m.

2 stops26h 56m

Ottawa

Wed 4/3

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

Nonstop6h 25m

C$ 891

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Tue 17/2

11:40 a.m.-12:43 a.m.

1 stop18h 03m

Ottawa

Fri 20/2

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

1 stop9h 50m

C$ 893

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 10/4

9:00 a.m.-3:05 p.m.

1 stop11h 05m

Ottawa

Sun 19/4

5:15 p.m.-8:00 a.m.

1 stop9h 45m

C$ 893

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 25/2

2:45 p.m.-12:39 a.m.

2 stops14h 54m

Ottawa

Sun 1/3

5:20 p.m.-6:20 p.m.

1 stop20h 00m

C$ 896

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Fri 10/4

12:40 p.m.-8:25 a.m.

1 stop24h 45m

Ottawa

Sun 19/4

3:05 p.m.-10:45 a.m.

1 stop14h 40m

C$ 898

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 25/2

5:35 p.m.-3:10 p.m.

1 stop26h 35m

Ottawa

Tue 3/3

5:20 p.m.-10:30 a.m.

1 stop12h 10m

C$ 901

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 25/2

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

1 stop13h 43m

Ottawa

Wed 4/3

10:30 a.m.-7:10 a.m.

2 stops15h 40m

C$ 916

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 25/2

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

1 stop13h 43m

Ottawa

Wed 4/3

10:30 a.m.-7:10 a.m.

2 stops15h 40m

C$ 918

LondonOttawa

LCY - YOW

LCYYOW

London City

Tue 13/1

9:50 a.m.-6:38 p.m.

2 stops13h 48m

Ottawa

Tue 20/1

2:05 p.m.-5:35 p.m.

2 stops22h 30m

C$ 991

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ottawa from

How to get the cheapest flight ticket from London to Ottawa

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 Ottawa?

The month of January is, on average, the cheapest month to fly to Ottawa from London, with most prices found around C$ 878. If you aren’t able to travel to Ottawa during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of C$ 904.

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

Our data shows that Friday is the least expensive day to fly to Ottawa. Tickets to fly out on this day can be as low as C$ 939. Flights from London to Ottawa on a Sunday will generally be more expensive and average around C$ 2,041. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Ottawa is in the morning. Flights from London to Ottawa during this time can be as low as C$ 1,013. At noon is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 1,115 per ticket.

What is the cheapest London to Ottawa flight route?

Fly from London Heathrow to Ottawa for the best London - Ottawa flight prices

How far in advance should I book a flight to Ottawa?

You are more likely to see cheaper flights to Ottawa from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Ottawa for around C$ 1,021 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ottawa from London for as low as C$ 693 on momondo.

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

There are 3 cabin classes available to choose from on London to Ottawa 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 London to Ottawa flights?

You could potentially save up to 36% on your flight if you consider stops on a London to Ottawa flight.

How have London to Ottawa flight prices changed over time?

As of December 2025, prices for London to Ottawa flights are approximately 34% cheaper when compared to flights at the same time last year.

When to book flights from London to Ottawa

Are you open to changing your travel dates? Check out the ideal times to fly from London to Ottawa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London to Ottawa (LON to YOW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Ottawa

Best price found

C$ 879

Fastest flight time

7h 30m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Ottawa

1 airport
The best flight deal from London to Ottawa found on momondo in the last 72 hours is C$ 879
The fastest flight from London to Ottawa takes 7h 30m
Direct flights go from London to Ottawa on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Ottawa. From London there are direct flights to Ottawa (YOW).
Search flight deals

  • How far is London to Ottawa by plane?

    London and Ottawa are 5358.1 km apart from one another. Typically, this will take 7h 30m by plane in normal conditions.

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

    Prices for flights from London to Ottawa Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Ottawa Airport.

  • What documentation or ID do you need to fly to Ottawa Airport?

    The travel and health documents required for your trip to Ottawa Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ottawa Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from London to Ottawa?

  • What is the most popular airline from London to Ottawa?

Best airlines flying from London to Ottawa

Compare and see reviews for airlines that fly from London to Ottawa with momondo
Airline
Rating
Free Cancellation
Price
Air FrancePriceFrom C$ 793Free CancellationRating
7.4
1,507 reviews
Search Air France flights
Air CanadaPriceFrom C$ 799Free CancellationRating
7.1
10,534 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 852Free CancellationRating
6.8
7,635 reviews
Search Lufthansa flights

  • Air Canada Flights From London to Ottawa

    Air Canada is one of the most popular airlines flying from London to Ottawa, operating 2 flights/week on average for this route. A good Air Canada flight deal for London to Ottawa starts from C$ 799 round-trip, up to an average price of C$ 1,015. Our users have rated Air Canada at 7.1/10.

  • Lufthansa Flights From London to Ottawa

    C$ 852 is the best Lufthansa flight deal from London to Ottawa found on momondo over the last 72 hours. The average Lufthansa ticket price found was closer to C$ 1,002, however, with flight time and availability significantly affecting the price. Lufthansa (6.8/10 from 7,635 user reviews) flies into Ottawa from London 2 times in an average week so prices can vary.

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Pembroke
Brockville
Perth
Smiths Falls
Wakefield
Prescott
Petawawa
Calabogie

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Ottawa . Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Ottawa from London which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ottawa from London.

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

Price alerts on flights to Ottawa from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Ottawa trip

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