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Cheap flights from London to Ottawa from C$ 462

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 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from London to Ottawa

Cheap round-trip flights

Air France Logo
9:00 a.m. - 3:05 p.m.LHR-YOW
11h 05m1 stop
Air France Logo
5:15 p.m. - 4:35 p.m.YOW-LHR
18h 20m1 stop
C$ 694Air France
Find Deal
Tue, 7 Oct - Tue, 14 Oct
Air France Logo
3:20 p.m. - 12:22 a.m.LHR-YOW
14h 02m2 stops
Air France Logo
5:25 p.m. - 8:00 a.m.YOW-LHR
9h 35m1 stop
C$ 706Air France
Find Deal
Fri, 12 Sep - Sun, 21 Sep
 Logo
7:45 p.m. - 3:00 p.m.LHR-YOW
24h 15m1 stop
 Logo
5:55 a.m. - 10:40 a.m.YOW-LHR
23h 45m1 stop
C$ 721
Find Deal
Sat, 20 Sep - Fri, 3 Oct
KLM Logo
5:50 p.m. - 12:22 a.m.LHR-YOW
11h 32m1 stop
KLM Logo
5:55 a.m. - 10:40 a.m.YOW-LHR
23h 45m1 stop
C$ 728KLM
Find Deal
Wed, 17 Sep - Wed, 24 Sep
 Logo
6:30 a.m. - 3:05 p.m.LHR-YOW
13h 35m2 stops
 Logo
5:15 p.m. - 4:35 p.m.YOW-LHR
18h 20m1 stop
C$ 737
Find Deal
Tue, 7 Oct - Tue, 14 Oct
KLM Logo
5:50 p.m. - 12:22 a.m.LHR-YOW
11h 32m1 stop
KLM Logo
5:15 p.m. - 10:45 a.m.YOW-LHR
12h 30m2 stops
C$ 786KLM
Find Deal
Tue, 2 Sep - Tue, 9 Sep
Air Transat Logo
12:40 p.m. - 8:35 p.m.LGW-YOW
12h 55m1 stop
Air Transat Logo
5:05 p.m. - 10:45 a.m.YOW-LGW
12h 40m1 stop
C$ 878Air Transat
Find Deal
Tue, 7 Oct - Tue, 14 Oct
Air Transat Logo
9:40 a.m. - 5:21 p.m.LGW-YOW
12h 41m1 stop
Air Transat Logo
5:05 p.m. - 10:45 a.m.YOW-LGW
12h 40m1 stop
C$ 889Air Transat
Find Deal
Mon, 8 Sep - Fri, 12 Sep
Air Canada Logo
3:50 p.m. - 1:38 a.m.LHR-YOW
14h 48m1 stop
Air Canada Logo
6:55 a.m. - 8:35 p.m.YOW-LHR
9h 40m1 stop
C$ 897Air Canada
Find Deal
Sat, 25 Oct - Sat, 1 Nov
Air Canada Logo
9:30 a.m. - 1:51 p.m.LHR-YOW
9h 21m1 stop
Air Canada Logo
6:55 a.m. - 8:35 p.m.YOW-LHR
9h 40m1 stop
C$ 902Air Canada
Find Deal
Sun, 19 Oct - Sat, 1 Nov

Air France flights from London to Ottawa

Our best Air France deals on London to Ottawa flight tickets
Air France
7 Oct
LHR9:00 a.m.London Heathrow
11h 05m
1 stop
YOW3:05 p.m.Ottawa
14 Oct
YOW5:15 p.m.Ottawa
18h 20m
1 stop
LHR4:35 p.m.London Heathrow
Air France
12 Sep
LHR3:20 p.m.London Heathrow
14h 02m
2 stops
YOW12:22 a.m.Ottawa
21 Sep
YOW5:25 p.m.Ottawa
9h 35m
1 stop
LHR8:00 a.m.London Heathrow
Air France
20 Sep
LHR5:35 p.m.London Heathrow
26h 25m
1 stop
YOW3:00 p.m.Ottawa
3 Oct
YOW5:15 p.m.Ottawa
12h 15m
1 stop
LHR10:30 a.m.London Heathrow

KLM flights from London to Ottawa

Our best KLM deals on London to Ottawa flight tickets
KLM
17 Sep
LHR5:50 p.m.London Heathrow
11h 32m
1 stop
YOW12:22 a.m.Ottawa
24 Sep
YOW5:55 a.m.Ottawa
23h 45m
1 stop
LHR10:40 a.m.London Heathrow
KLM
2 Sep
LHR5:50 p.m.London Heathrow
11h 32m
1 stop
YOW12:22 a.m.Ottawa
9 Sep
YOW5:15 p.m.Ottawa
12h 30m
2 stops
LHR10:45 a.m.London Heathrow
KLM
16 Sep
LHR5:50 p.m.London Heathrow
11h 32m
1 stop
YOW12:22 a.m.Ottawa
23 Sep
YOW5:25 p.m.Ottawa
15h 25m
2 stops
LHR1:50 p.m.London Heathrow

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$ 852. 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$ 868.

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$ 1,008. Flights from London to Ottawa on a Saturday will generally be more expensive and average around C$ 1,297. 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$ 1,008. At noon is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 1,103 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$ 743 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 32% 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 July 2025, prices for London to Ottawa flights are approximately 37% 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$ 462

Fastest flight time

7h 20m

Direct flights

Tue, Thu, Fri and Sun

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from London in the past 72 hours is C$ 462. The best round-trip flight deal from London to Ottawa found on momondo in the last 72 hours is C$ 694.
The fastest flight from London to Ottawa takes 7h 20m
Direct flights go from London to Ottawa on Tuesday, Thursday, Friday and Sunday. Airlines offering direct flights are: Austrian Airlines, Lufthansa and Air Canada.
There is 1 airport near Ottawa: Ottawa (YOW)

  • How far is London to Ottawa by plane?

    London and Ottawa are 5358.1 km apart from one another. Typically, this will take 7h 20m 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$ 726Free CancellationRating
7.5
1,473 reviews
Search Air France flights
Air CanadaPriceFrom C$ 813Free CancellationRating
7.1
9,678 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 842Free CancellationRating
6.8
7,207 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 4 flights/week on average for this route. A good Air Canada flight deal for London to Ottawa starts from C$ 596 round-trip, up to an average price of C$ 763. Our users have rated Air Canada at 7.1/10.

  • Lufthansa Flights From London to Ottawa

    C$ 618 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$ 787, however, with flight time and availability significantly affecting the price. Lufthansa (6.8/10 from 7,207 user reviews) flies into Ottawa from London 4 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
Brockville
Pembroke
Smiths Falls
Wakefield
Calabogie
Perth
Prescott
Petawawa
Winchester

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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1 adult
Tue 8/7
Tue 15/7

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