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Cheap flights from London to Ottawa from C$ 506

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 5/5. 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
8:55 a.m. - 3:10 p.m.LHR-YOW
11h 15m1 stop
Virgin Atlantic Logo
5:20 p.m. - 1:45 p.m.YOW-LHR
15h 25m1 stop
C$ 871Virgin Atlantic
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Thu, 4 Dec - Tue, 9 Dec
Air Canada Logo
2:05 p.m. - 8:15 p.m.LHR-YOW
11h 10m1 stop
Air Canada Logo
6:15 a.m. - 6:30 a.m.YOW-LHR
19h 15m2 stops
C$ 882Air Canada
Find Deal
Sun, 3 May - Sun, 10 May
Air Canada Logo
12:40 p.m. - 1:10 p.m.LHR-YOW
29h 30m2 stops
Air Canada Logo
2:00 p.m. - 6:30 a.m.YOW-LHR
11h 30m2 stops
C$ 883Air Canada
Find Deal
Sun, 3 May - Sun, 10 May
Air Transat Logo
11:40 a.m. - 8:25 a.m.LGW-YOW
25h 45m1 stop
Air Transat Logo
6:55 p.m. - 9:45 a.m.YOW-LGW
9h 50m1 stop
C$ 892Air Transat
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Wed, 3 Dec - Sat, 6 Dec
Air France Logo
2:45 p.m. - 12:42 a.m.LHR-YOW
14h 57m2 stops
Air France Logo
5:20 p.m. - 6:20 p.m.YOW-LHR
20h 00m1 stop
C$ 893Air France
Find Deal
Wed, 3 Dec - Tue, 9 Dec
Air Canada Logo
12:05 p.m. - 6:34 p.m.LHR-YOW
11h 29m1 stop
Air Canada Logo
6:00 a.m. - 10:00 a.m.YOW-LHR
23h 00m2 stops
C$ 896Air Canada
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Sat, 11 Apr - Sat, 25 Apr
Air Transat Logo
11:40 a.m. - 6:26 p.m.LGW-YOW
11h 46m1 stop
Air Transat Logo
3:05 p.m. - 9:45 a.m.YOW-LGW
13h 40m1 stop
C$ 899Air Transat
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Mon, 16 Feb - Fri, 20 Feb
Multiple Airlines Logo
8:05 p.m. - 5:42 p.m.LHR-YOW
26h 37m2 stops
Multiple Airlines Logo
9:55 p.m. - 9:20 a.m.YOW-LHR
6h 25mdirect
C$ 903Multiple Airlines
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Mon, 1 Dec - Sun, 7 Dec
Multiple Airlines Logo
2:30 p.m. - 12:42 a.m.LHR-YOW
15h 12m1 stop
Multiple Airlines Logo
5:35 p.m. - 4:35 p.m.YOW-LHR
18h 00m1 stop
C$ 911Multiple Airlines
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Wed, 7 Jan - Wed, 14 Jan
Lufthansa Logo
6:10 p.m. - 11:08 p.m.LCY-YOW
33h 58m2 stops
Lufthansa Logo
6:05 p.m. - 9:15 a.m.YOW-LCY
34h 10m2 stops
C$ 1,050Lufthansa
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Wed, 28 Jan - Sun, 1 Feb

Air Transat flights from London to Ottawa

Our best Air Transat deals on London to Ottawa flight tickets
Air Transat
3 Dec
LGW11:40 a.m.London Gatwick
25h 45m
1 stop
YOW8:25 a.m.Ottawa
6 Dec
YOW6:55 p.m.Ottawa
9h 50m
1 stop
LGW9:45 a.m.London Gatwick
C$ 892
Find similar
Air Transat
16 Feb
LGW11:40 a.m.London Gatwick
11h 46m
1 stop
YOW6:26 p.m.Ottawa
20 Feb
YOW3:05 p.m.Ottawa
13h 40m
1 stop
LGW9:45 a.m.London Gatwick
C$ 899
Find similar
Air Transat
11 Jan
LGW11:40 a.m.London Gatwick
11h 46m
1 stop
YOW6:26 p.m.Ottawa
15 Jan
YOW6:55 p.m.Ottawa
9h 50m
1 stop
LGW9:45 a.m.London Gatwick
C$ 904
Find similar

Air France flights from London to Ottawa

Our best Air France deals on London to Ottawa flight tickets
Air France
3 Dec
LHR2:45 p.m.London Heathrow
14h 57m
2 stops
YOW12:42 a.m.Ottawa
9 Dec
YOW5:20 p.m.Ottawa
20h 00m
1 stop
LHR6:20 p.m.London Heathrow
C$ 893
Find similar
Air France
28 Nov
LHR8:55 a.m.London Heathrow
11h 15m
1 stop
YOW3:10 p.m.Ottawa
5 Dec
YOW5:20 p.m.Ottawa
9h 35m
1 stop
LHR7:55 a.m.London Heathrow
C$ 910
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 19 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

Thu 4/12

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

1 stop11h 15m

Ottawa

Tue 9/12

5:20 p.m.-1:45 p.m.

1 stop15h 25m

C$ 871

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sun 3/5

2:05 p.m.-8:15 p.m.

1 stop11h 10m

Ottawa

Sun 10/5

6:15 a.m.-6:30 a.m.

2 stops19h 15m

C$ 882

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sun 3/5

12:40 p.m.-1:10 p.m.

2 stops29h 30m

Ottawa

Sun 10/5

2:00 p.m.-6:30 a.m.

2 stops11h 30m

C$ 883

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Wed 3/12

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

1 stop25h 45m

Ottawa

Sat 6/12

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

1 stop9h 50m

C$ 892

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 3/12

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

2 stops14h 57m

Ottawa

Tue 9/12

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

1 stop20h 00m

C$ 893

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 11/4

12:05 p.m.-6:34 p.m.

1 stop11h 29m

Ottawa

Sat 25/4

6:00 a.m.-10:00 a.m.

2 stops23h 00m

C$ 896

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Mon 16/2

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

1 stop11h 46m

Ottawa

Fri 20/2

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

1 stop13h 40m

C$ 899

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 1/12

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

2 stops26h 37m

Ottawa

Sun 7/12

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

Nonstop6h 25m

C$ 903

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 7/1

2:30 p.m.-12:42 a.m.

1 stop15h 12m

Ottawa

Wed 14/1

5:35 p.m.-4:35 p.m.

1 stop18h 00m

C$ 911

LondonOttawa

LCY - YOW

LCYYOW

London City

Wed 28/1

6:10 p.m.-11:08 p.m.

2 stops33h 58m

Ottawa

Sun 1/2

6:05 p.m.-9:15 a.m.

2 stops34h 10m

C$ 1,050

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$ 1,334. 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$ 1,030. 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 and Sat

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 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$ 639Free CancellationRating
7.5
673 reviews
Search Virgin Atlantic flights
Air FrancePriceFrom C$ 807Free CancellationRating
7.4
1,493 reviews
Search Air France flights
Air CanadaPriceFrom C$ 813Free CancellationRating
7.1
10,462 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 867Free CancellationRating
6.8
7,576 reviews
Search Lufthansa flights

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.

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