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Cheap flights from London to Ottawa from C$ 536

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 15/1. 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.
Air Canada Logo
6:50 a.m. - 4:23 p.m.LHR-YOW
14h 33m2 stops
Air Canada Logo
10:30 a.m. - 7:10 a.m.YOW-LHR
15h 40m2 stops
C$ 858Air Canada
Find Deal
Sun, 25 Jan - Sat, 7 Feb
Air Canada Logo
1:25 p.m. - 9:46 a.m.LHR-YOW
25h 21m2 stops
Air Canada Logo
10:30 a.m. - 7:10 a.m.YOW-LHR
15h 40m2 stops
C$ 861Air Canada
Find Deal
Mon, 2 Feb - Mon, 9 Feb
Air Canada Logo
6:50 a.m. - 3:05 p.m.LHR-YOW
13h 15m2 stops
Air Canada Logo
9:25 a.m. - 6:30 a.m.YOW-LHR
16h 05m2 stops
C$ 862Air Canada
Find Deal
Sat, 2 May - Sat, 16 May
Virgin Atlantic Logo
6:20 a.m. - 3:10 p.m.LHR-YOW
13h 50m1 stop
Virgin Atlantic Logo
5:20 p.m. - 1:45 p.m.YOW-LHR
15h 25m1 stop
C$ 869Virgin Atlantic
Find Deal
Fri, 5 Dec - Wed, 10 Dec
Air France Logo
8:55 a.m. - 3:10 p.m.LHR-YOW
11h 15m1 stop
Air France Logo
5:20 p.m. - 8:00 a.m.YOW-LHR
9h 40m1 stop
C$ 874Air France
Find Deal
Thu, 27 Nov - Thu, 4 Dec
Virgin Atlantic Logo
9:00 a.m. - 3:10 p.m.LHR-YOW
11h 10m1 stop
Virgin Atlantic Logo
5:20 p.m. - 4:35 p.m.YOW-LHR
18h 15m1 stop
C$ 875Virgin Atlantic
Find Deal
Thu, 27 Nov - Tue, 2 Dec
Air Transat Logo
11:40 a.m. - 8:25 a.m.LGW-YOW
24h 45m1 stop
Air Transat Logo
3:05 p.m. - 9:45 a.m.YOW-LGW
14h 40m1 stop
C$ 885Air Transat
Find Deal
Thu, 12 Mar - Thu, 19 Mar
Air Transat Logo
11:40 a.m. - 12:39 a.m.LGW-YOW
17h 59m1 stop
Air Transat Logo
6:55 p.m. - 9:45 a.m.YOW-LGW
9h 50m1 stop
C$ 886Air Transat
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Tue, 25 Nov - Wed, 26 Nov
Lufthansa Logo
9:50 a.m. - 5:18 p.m.LCY-YOW
35h 28m2 stops
Lufthansa Logo
7:25 p.m. - 5:40 p.m.YOW-LCY
42h 15m2 stops
C$ 1,026Lufthansa
Find Deal
Wed, 11 Mar - Sun, 15 Mar
Lufthansa Logo
5:15 p.m. - 2:05 p.m.LCY-YOW
25h 50m2 stops
Lufthansa Logo
6:05 p.m. - 5:35 p.m.YOW-LCY
18h 30m2 stops
C$ 1,308Lufthansa
Find Deal
Mon, 15 Dec - Tue, 6 Jan

Lufthansa flights from London to Ottawa

Our best Lufthansa deals on London to Ottawa flight tickets
Lufthansa
27 Nov
LHR6:35 a.m.London Heathrow
17h 03m
2 stops
YOW6:38 p.m.Ottawa
2 Dec
YOW4:00 p.m.Ottawa
12h 45m
2 stops
LHR9:45 a.m.London Heathrow
C$ 942
Find similar
Lufthansa
28 Nov
LHR12:00 p.m.London Heathrow
7h 30m
YOW2:30 p.m.Ottawa
2 Dec
YOW4:00 p.m.Ottawa
10h 10m
1 stop
LHR7:10 a.m.London Heathrow
C$ 956
Find similar
Lufthansa
21 Nov
LHR1:00 p.m.London Heathrow
10h 38m
1 stop
YOW6:38 p.m.Ottawa
23 Nov
YOW9:55 p.m.Ottawa
6h 25m
LHR9:20 a.m.London Heathrow
C$ 965
Find similar

United Airlines flights from London to Ottawa

Our best United Airlines deals on London to Ottawa flight tickets
United Airlines
8 Dec
LHR8:30 a.m.London Heathrow
20h 24m
2 stops
YOW11:54 p.m.Ottawa
15 Dec
YOW12:05 p.m.Ottawa
17h 45m
2 stops
LHR10:50 a.m.London Heathrow
C$ 944
Find similar
United Airlines
10 Dec
LHR11:05 a.m.London Heathrow
34h 27m
2 stops
YOW4:32 p.m.Ottawa
14 Dec
YOW12:05 p.m.Ottawa
17h 45m
2 stops
LHR10:50 a.m.London Heathrow
C$ 963
Find similar
United Airlines
28 Nov
LHR3:10 p.m.London Heathrow
27h 08m
2 stops
YOW1:18 p.m.Ottawa
17 Jan
YOW2:15 p.m.Ottawa
13h 55m
2 stops
LHR9:10 a.m.London Heathrow
C$ 987
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 12 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

Sun 25/1

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

2 stops14h 33m

Ottawa

Sat 7/2

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

2 stops15h 40m

C$ 858

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 2/2

1:25 p.m.-9:46 a.m.

2 stops25h 21m

Ottawa

Mon 9/2

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

2 stops15h 40m

C$ 861

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 2/5

6:50 a.m.-3:05 p.m.

2 stops13h 15m

Ottawa

Sat 16/5

9:25 a.m.-6:30 a.m.

2 stops16h 05m

C$ 862

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 5/12

6:20 a.m.-3:10 p.m.

1 stop13h 50m

Ottawa

Wed 10/12

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

1 stop15h 25m

C$ 869

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 27/11

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

1 stop11h 15m

Ottawa

Thu 4/12

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

1 stop9h 40m

C$ 874

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 27/11

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

1 stop11h 10m

Ottawa

Tue 2/12

5:20 p.m.-4:35 p.m.

1 stop18h 15m

C$ 875

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Thu 12/3

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

1 stop24h 45m

Ottawa

Thu 19/3

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

1 stop14h 40m

C$ 885

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Tue 25/11

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

1 stop17h 59m

Ottawa

Wed 26/11

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

1 stop9h 50m

C$ 886

LondonOttawa

LCY - YOW

LCYYOW

London City

Wed 11/3

9:50 a.m.-5:18 p.m.

2 stops35h 28m

Ottawa

Sun 15/3

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

2 stops42h 15m

C$ 1,026

LondonOttawa

LCY - YOW

LCYYOW

London City

Mon 15/12

5:15 p.m.-2:05 p.m.

2 stops25h 50m

Ottawa

Tue 6/1

6:05 p.m.-5:35 p.m.

2 stops18h 30m

C$ 1,308

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$ 1,038 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, 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, 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
1,486 reviews
Search Air France flights
Air CanadaPriceFrom C$ 813Free CancellationRating
7.1
10,444 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 867Free CancellationRating
6.8
7,570 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$ 813 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 7,570 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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