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Cheap flights from London to Ottawa from C$ 515

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 5/12. 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
9:00 a.m. - 5:42 p.m.LHR-YOW
13h 42m2 stops
Multiple Airlines Logo
8:30 a.m. - 7:10 a.m.YOW-LHR
17h 40m2 stops
C$ 838Multiple Airlines
Find Deal
Wed, 3 Dec - Wed, 10 Dec
Multiple Airlines Logo
9:00 a.m. - 5:42 p.m.LHR-YOW
13h 42m2 stops
Multiple Airlines Logo
8:25 p.m. - 8:35 p.m.YOW-LHR
19h 10m2 stops
C$ 839Multiple Airlines
Find Deal
Tue, 25 Nov - Wed, 28 Jan
Multiple Airlines Logo
8:05 p.m. - 5:42 p.m.LHR-YOW
26h 37m2 stops
Multiple Airlines Logo
2:05 p.m. - 7:10 a.m.YOW-LHR
36h 05m2 stops
C$ 842Multiple Airlines
Find Deal
Sat, 24 Jan - Mon, 2 Feb
Air Canada Logo
6:50 a.m. - 4:18 p.m.LHR-YOW
14h 28m2 stops
Air Canada Logo
8:25 p.m. - 8:35 p.m.YOW-LHR
19h 10m2 stops
C$ 856Air Canada
Find Deal
Sat, 22 Nov - Sun, 30 Nov
Austrian Airlines Logo
7:25 p.m. - 5:18 p.m.LHR-YOW
26h 53m2 stops
Austrian Airlines Logo
7:25 p.m. - 11:20 a.m.YOW-LHR
10h 55m1 stop
C$ 859Austrian Airlines
Find Deal
Wed, 3 Dec - Wed, 10 Dec
Air Canada Logo
1:25 p.m. - 5:16 p.m.LHR-YOW
32h 51m2 stops
Air Canada Logo
2:50 p.m. - 7:10 a.m.YOW-LHR
11h 20m1 stop
C$ 863Air Canada
Find Deal
Wed, 3 Dec - Wed, 10 Dec
Air Transat Logo
11:40 a.m. - 12:39 a.m.LGW-YOW
17h 59m1 stop
Air Transat Logo
3:05 p.m. - 9:45 a.m.YOW-LGW
13h 40m1 stop
C$ 884Air Transat
Find Deal
Sat, 22 Nov - Sun, 30 Nov
Air Transat Logo
11:40 a.m. - 12:41 a.m.LGW-YOW
18h 01m1 stop
Air Transat Logo
3:00 p.m. - 9:45 a.m.YOW-LGW
13h 45m1 stop
C$ 891Air Transat
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Tue, 2 Dec - Tue, 9 Dec
Lufthansa Logo
9:40 a.m. - 9:18 p.m.LCY-YOW
39h 38m2 stops
Lufthansa Logo
6:20 p.m. - 9:15 a.m.YOW-LCY
34h 55m2 stops
C$ 1,015Lufthansa
Find Deal
Thu, 12 Mar - Mon, 16 Mar
Lufthansa Logo
9:40 a.m. - 1:38 a.m.LCY-YOW
19h 58m2 stops
Lufthansa Logo
7:25 p.m. - 5:40 p.m.YOW-LCY
18h 15m2 stops
C$ 1,029Lufthansa
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Thu, 12 Mar - Mon, 16 Mar

Virgin Atlantic flights from London to Ottawa

Our best Virgin Atlantic deals on London to Ottawa flight tickets
Virgin Atlantic
2 Dec
LHR8:55 a.m.London Heathrow
11h 15m
1 stop
YOW3:10 p.m.Ottawa
9 Dec
YOW5:20 p.m.Ottawa
9h 40m
1 stop
LHR8:00 a.m.London Heathrow
C$ 871
Find similar
Virgin Atlantic
27 Nov
LHR8:55 a.m.London Heathrow
11h 15m
1 stop
YOW3:10 p.m.Ottawa
7 Dec
YOW5:20 p.m.Ottawa
9h 35m
1 stop
LHR7:55 a.m.London Heathrow
C$ 877
Find similar
Virgin Atlantic
3 Dec
LHR5:35 p.m.London Heathrow
26h 35m
1 stop
YOW3:10 p.m.Ottawa
10 Dec
YOW5:20 p.m.Ottawa
9h 35m
1 stop
LHR7:55 a.m.London Heathrow
C$ 886
Find similar

Air France flights from London to Ottawa

Our best Air France deals on London to Ottawa flight tickets
Air France
2 Dec
LHR6:20 a.m.London Heathrow
13h 50m
1 stop
YOW3:10 p.m.Ottawa
9 Dec
YOW5:20 p.m.Ottawa
9h 40m
1 stop
LHR8:00 a.m.London Heathrow
C$ 876
Find similar
Air France
28 Nov
LHR8:55 a.m.London Heathrow
11h 15m
1 stop
YOW3:10 p.m.Ottawa
7 Dec
YOW5:20 p.m.Ottawa
20h 00m
1 stop
LHR6:20 p.m.London Heathrow
C$ 878
Find similar
Air France
3 Dec
LHR2:45 p.m.London Heathrow
29h 25m
1 stop
YOW3:10 p.m.Ottawa
10 Dec
YOW5:20 p.m.Ottawa
20h 00m
1 stop
LHR6:20 p.m.London Heathrow
C$ 890
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 5 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

Wed 3/12

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

2 stops13h 42m

Ottawa

Wed 10/12

8:30 a.m.-7:10 a.m.

2 stops17h 40m

C$ 838

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 25/11

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

2 stops13h 42m

Ottawa

Wed 28/1

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

2 stops19h 10m

C$ 839

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 24/1

8:05 p.m.-5:42 p.m.

2 stops26h 37m

Ottawa

Mon 2/2

2:05 p.m.-7:10 a.m.

2 stops36h 05m

C$ 842

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 22/11

6:50 a.m.-4:18 p.m.

2 stops14h 28m

Ottawa

Sun 30/11

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

2 stops19h 10m

C$ 856

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 3/12

7:25 p.m.-5:18 p.m.

2 stops26h 53m

Ottawa

Wed 10/12

7:25 p.m.-11:20 a.m.

1 stop10h 55m

C$ 859

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 3/12

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

2 stops32h 51m

Ottawa

Wed 10/12

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

1 stop11h 20m

C$ 863

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Sat 22/11

11:40 a.m.-12:39 a.m.

1 stop17h 59m

Ottawa

Sun 30/11

3:05 p.m.-9:45 a.m.

1 stop13h 40m

C$ 884

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Tue 2/12

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

1 stop18h 01m

Ottawa

Tue 9/12

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

1 stop13h 45m

C$ 891

LondonOttawa

LCY - YOW

LCYYOW

London City

Thu 12/3

9:40 a.m.-9:18 p.m.

2 stops39h 38m

Ottawa

Mon 16/3

6:20 p.m.-9:15 a.m.

2 stops34h 55m

C$ 1,015

LondonOttawa

LCY - YOW

LCYYOW

London City

Thu 12/3

9:40 a.m.-1:38 a.m.

2 stops19h 58m

Ottawa

Mon 16/3

7:25 p.m.-5:40 p.m.

2 stops18h 15m

C$ 1,029

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$ 884. 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$ 905.

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$ 1,027. Flights from London to Ottawa on a Saturday will generally be more expensive and average around C$ 1,340. 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$ 1,035. At noon is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 1,139 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$ 1,052 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$ 708 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 8% 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$ 1,060

Fastest flight time

7h 30m

Direct flights

Mon, Thu, Fri and Sat

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from London in the past 72 hours is C$ 1,060. The best round-trip flight deal from London to Ottawa found on momondo in the last 72 hours is C$ 898.
The fastest flight from London to Ottawa takes 7h 30m
Direct flights go from London to Ottawa on Monday, Thursday, Friday and Saturday. 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$ 641Free CancellationRating
7.5
672 reviews
Search Virgin Atlantic flights
Air FrancePriceFrom C$ 811Free CancellationRating
7.4
1,484 reviews
Search Air France flights
Air CanadaPriceFrom C$ 817Free CancellationRating
7.1
10,410 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 870Free CancellationRating
6.8
7,555 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$ 817 round-trip, up to an average price of C$ 1,044. Our users have rated Air Canada at 7.1/10.

  • Lufthansa Flights From London to Ottawa

    C$ 870 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$ 1,024, however, with flight time and availability significantly affecting the price. Lufthansa (6.8/10 from 7,555 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

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.
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