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Cheap flights from London to Ottawa from C$ 485

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 13/4. 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.
Virgin Atlantic Logo
9:00 a.m. - 3:10 p.m.LHR-YOW
11h 10m1 stop
Virgin Atlantic Logo
5:20 p.m. - 8:00 a.m.YOW-LHR
9h 40m1 stop
C$ 874Virgin Atlantic
Find Deal
Fri, 5 Dec - Wed, 10 Dec
Air Canada Logo
6:50 a.m. - 4:23 p.m.LHR-YOW
13h 33m2 stops
Air Canada Logo
8:25 p.m. - 9:00 p.m.YOW-LHR
19h 35m2 stops
C$ 884Air Canada
Find Deal
Tue, 24 Mar - Wed, 22 Apr
Air Transat Logo
11:40 a.m. - 6:26 p.m.LGW-YOW
11h 46m1 stop
Air Transat Logo
10:00 a.m. - 9:45 a.m.YOW-LGW
18h 45m1 stop
C$ 885Air Transat
Find Deal
Fri, 13 Feb - Thu, 26 Feb
Air Transat Logo
11:40 a.m. - 4:51 p.m.LGW-YOW
33h 11m1 stop
Air Transat Logo
6:45 a.m. - 10:45 a.m.YOW-LGW
23h 00m1 stop
C$ 888Air Transat
Find Deal
Tue, 24 Mar - Wed, 22 Apr
Air Canada Logo
2:05 p.m. - 3:05 p.m.LHR-YOW
30h 00m2 stops
Air Canada Logo
7:00 a.m. - 9:00 p.m.YOW-LHR
9h 00m1 stop
C$ 891Air Canada
Find Deal
Fri, 1 May - Wed, 20 May
Air France Logo
2:45 p.m. - 12:42 a.m.LHR-YOW
14h 57m2 stops
Air France Logo
5:20 p.m. - 10:30 a.m.YOW-LHR
12h 10m1 stop
C$ 893Air France
Find Deal
Fri, 5 Dec - Wed, 10 Dec
Air Canada Logo
9:00 a.m. - 9:40 a.m.LHR-YOW
29h 40m2 stops
Air Canada Logo
8:25 p.m. - 8:35 p.m.YOW-LHR
19h 10m2 stops
C$ 895Air Canada
Find Deal
Fri, 28 Nov - Fri, 5 Dec
Multiple Airlines Logo
6:30 a.m. - 12:39 a.m.STN-YOW
23h 09m2 stops
Multiple Airlines Logo
5:40 a.m. - 10:20 p.m.YOW-STN
35h 40m2 stops
C$ 978Multiple Airlines
Find Deal
Sat, 11 Apr - Sun, 12 Apr
Multiple Airlines Logo
6:40 p.m. - 9:40 a.m.LGW-YOW
44h 00m2 stops
Multiple Airlines Logo
9:15 a.m. - 5:50 p.m.YOW-LGW
27h 35m2 stops
C$ 1,004Multiple Airlines
Find Deal
Tue, 2 Dec - Sun, 7 Dec
Lufthansa Logo
9:50 a.m. - 1:38 a.m.LCY-YOW
19h 48m2 stops
Lufthansa Logo
7:25 p.m. - 9:15 a.m.YOW-LCY
33h 50m2 stops
C$ 1,027Lufthansa
Find Deal
Wed, 11 Mar - Sun, 15 Mar

Air Canada flights from London to Ottawa

Our best Air Canada deals on London to Ottawa flight tickets
Air Canada
22 Nov
LHR6:50 a.m.London Heathrow
20h 30m
2 stops
YOW10:20 p.m.Ottawa
9 Dec
YOW4:15 p.m.Ottawa
23h 20m
2 stops
LHR8:35 p.m.London Heathrow
C$ 871
Find similar
Air Canada
22 Nov
LHR3:00 p.m.London Heathrow
29h 00m
1 stop
YOW3:00 p.m.Ottawa
29 Nov
YOW11:10 a.m.Ottawa
15h 45m
1 stop
LHR7:55 a.m.London Heathrow
C$ 885
Find similar
Air Canada
23 Nov
LHR9:00 a.m.London Heathrow
29h 40m
2 stops
YOW9:40 a.m.Ottawa
30 Nov
YOW8:25 p.m.Ottawa
19h 10m
2 stops
LHR8:35 p.m.London Heathrow
C$ 891
Find similar

Virgin Atlantic flights from London to Ottawa

Our best Virgin Atlantic deals on London to Ottawa flight tickets
Virgin Atlantic
5 Dec
LHR8:55 a.m.London Heathrow
11h 15m
1 stop
YOW3:10 p.m.Ottawa
10 Dec
YOW5:20 p.m.Ottawa
15h 25m
1 stop
LHR1:45 p.m.London Heathrow
C$ 872
Find similar
Virgin Atlantic
5 Dec
LHR9:00 a.m.London Heathrow
11h 10m
1 stop
YOW3:10 p.m.Ottawa
10 Dec
YOW5:20 p.m.Ottawa
9h 40m
1 stop
LHR8:00 a.m.London Heathrow
C$ 874
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 16 November 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

Fri 5/12

9:00 a.m.-3:10 p.m.

1 stop11h 10m

Ottawa

Wed 10/12

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

1 stop9h 40m

C$ 874

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 24/3

6:50 a.m.-4:23 p.m.

2 stops13h 33m

Ottawa

Wed 22/4

8:25 p.m.-9:00 p.m.

2 stops19h 35m

C$ 884

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Fri 13/2

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

1 stop11h 46m

Ottawa

Thu 26/2

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

1 stop18h 45m

C$ 885

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Tue 24/3

11:40 a.m.-4:51 p.m.

1 stop33h 11m

Ottawa

Wed 22/4

6:45 a.m.-10:45 a.m.

1 stop23h 00m

C$ 888

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 1/5

2:05 p.m.-3:05 p.m.

2 stops30h 00m

Ottawa

Wed 20/5

7:00 a.m.-9:00 p.m.

1 stop9h 00m

C$ 891

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 5/12

2:45 p.m.-12:42 a.m.

2 stops14h 57m

Ottawa

Wed 10/12

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

1 stop12h 10m

C$ 893

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 28/11

9:00 a.m.-9:40 a.m.

2 stops29h 40m

Ottawa

Fri 5/12

8:25 p.m.-8:35 p.m.

2 stops19h 10m

C$ 895

LondonOttawa

STN - YOW

STNYOW

London Stansted

Sat 11/4

6:30 a.m.-12:39 a.m.

2 stops23h 09m

Ottawa

Sun 12/4

5:40 a.m.-10:20 p.m.

2 stops35h 40m

C$ 978

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Tue 2/12

6:40 p.m.-9:40 a.m.

2 stops44h 00m

Ottawa

Sun 7/12

9:15 a.m.-5:50 p.m.

2 stops27h 35m

C$ 1,004

LondonOttawa

LCY - YOW

LCYYOW

London City

Wed 11/3

9:50 a.m.-1:38 a.m.

2 stops19h 48m

Ottawa

Sun 15/3

7:25 p.m.-9:15 a.m.

2 stops33h 50m

C$ 1,027

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 typical price of a round-trip flight between London and Ottawa?

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$ 874. If you aren’t able to travel to Ottawa during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of C$ 913.

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

Our data shows that Wednesday is the least expensive day to fly to Ottawa. Tickets to fly out on this day can be as low as C$ 1,023. Flights from London to Ottawa on a Saturday will generally be more expensive and average around C$ 1,335. 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$ 1,031. At noon is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 1,135 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$ 1,034 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$ 705 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 November 2025, prices for London to Ottawa flights are approximately 9% 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$ 1,056

Fastest flight time

7h 30m

Direct flights

Mon, Tue, Thu, Sat and Sun

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from London in the past 72 hours is C$ 1,056. The best round-trip flight deal from London to Ottawa found on momondo in the last 72 hours is C$ 895.
The fastest flight from London to Ottawa takes 7h 30m
Direct flights go from London to Ottawa on Monday, Tuesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Ottawa: 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
Virgin AtlanticPriceFrom C$ 639Free CancellationRating
7.5
673 reviews
Search Virgin Atlantic flights
Air FrancePriceFrom C$ 808Free CancellationRating
7.4
1,487 reviews
Search Air France flights
Air CanadaPriceFrom C$ 814Free CancellationRating
7.1
10,454 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 867Free CancellationRating
6.8
7,574 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 3 flights/week on average for this route. A good Air Canada flight deal for London to Ottawa starts from C$ 814 round-trip, up to an average price of C$ 1,040. Our users have rated Air Canada at 7.1/10.

  • Lufthansa Flights From London to Ottawa

    C$ 867 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$ 1,020, however, with flight time and availability significantly affecting the price. Lufthansa (6.8/10 from 7,574 user reviews) flies into Ottawa from London 3 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
Smiths Falls
Perth
Wakefield
Calabogie
Prescott
Petawawa

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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