Cheap flights from London to Ottawa from C$ 375

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 16/10. 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 Canada Logo
4:00 p.m. - 9:11 a.m.LHR-YOW
22h 11m1 stop
Air Canada Logo
8:00 a.m. - 10:00 a.m.YOW-LHR
21h 00m1 stop
C$ 651Air Canada
Find Deal
Sat, 23 Aug - Mon, 25 Aug
Air Canada Logo
6:00 p.m. - 9:11 a.m.LHR-YOW
20h 11m1 stop
Air Canada Logo
8:00 a.m. - 10:00 a.m.YOW-LHR
21h 00m1 stop
C$ 679Air Canada
Find Deal
Sat, 23 Aug - Mon, 25 Aug
Air France Logo
5:50 p.m. - 12:22 a.m.LHR-YOW
11h 32m1 stop
Air France Logo
5:25 p.m. - 6:35 p.m.YOW-LHR
20h 10m1 stop
C$ 720Air France
Find Deal
Sun, 31 Aug - Sun, 7 Sep
 Logo
8:40 a.m. - 12:42 a.m.LHR-YOW
21h 02m2 stops
 Logo
5:20 p.m. - 10:30 a.m.YOW-LHR
12h 10m1 stop
C$ 725
Find Deal
Sun, 11 Jan - Fri, 16 Jan
Air France Logo
3:00 p.m. - 12:22 a.m.LHR-YOW
14h 22m2 stops
Air France Logo
5:15 p.m. - 4:35 p.m.YOW-LHR
18h 20m1 stop
C$ 731Air France
Find Deal
Thu, 4 Sep - Sat, 13 Sep
Virgin Atlantic Logo
6:15 a.m. - 3:00 p.m.LHR-YOW
13h 45m1 stop
Virgin Atlantic Logo
5:15 p.m. - 4:35 p.m.YOW-LHR
18h 20m1 stop
C$ 747Virgin Atlantic
Find Deal
Tue, 23 Sep - Tue, 30 Sep
Virgin Atlantic Logo
11:30 a.m. - 3:05 p.m.LHR-YOW
32h 35m1 stop
Virgin Atlantic Logo
5:15 p.m. - 8:00 a.m.YOW-LHR
9h 45m1 stop
C$ 757Virgin Atlantic
Find Deal
Thu, 4 Sep - Sat, 13 Sep
KLM Logo
11:45 a.m. - 12:42 a.m.LHR-YOW
17h 57m2 stops
KLM Logo
5:20 p.m. - 10:45 a.m.YOW-LHR
12h 25m2 stops
C$ 768KLM
Find Deal
Sun, 11 Jan - Sun, 18 Jan
 Logo
1:00 p.m. - 4:58 p.m.LGW-YOW
32h 58m2 stops
 Logo
10:50 a.m. - 6:20 a.m.YOW-LGW
14h 30m1 stop
C$ 776
Find Deal
Tue, 23 Sep - Tue, 30 Sep
KLM Logo
6:30 a.m. - 3:10 p.m.LHR-YOW
13h 40m2 stops
KLM Logo
5:20 p.m. - 10:45 a.m.YOW-LHR
12h 25m2 stops
C$ 934KLM
Find Deal
Tue, 4 Nov - Thu, 20 Nov

Air France flights from London to Ottawa

Our best Air France deals on London to Ottawa flight tickets
Air France
31 Aug
LHR5:50 p.m.London Heathrow
11h 32m
1 stop
YOW12:22 a.m.Ottawa
7 Sep
YOW5:25 p.m.Ottawa
20h 10m
1 stop
LHR6:35 p.m.London Heathrow
Air France
4 Sep
LHR3:00 p.m.London Heathrow
14h 22m
2 stops
YOW12:22 a.m.Ottawa
13 Sep
YOW5:15 p.m.Ottawa
18h 20m
1 stop
LHR4:35 p.m.London Heathrow
Air France
12 Jan
LHR2:45 p.m.London Heathrow
14h 57m
2 stops
YOW12:42 a.m.Ottawa
16 Jan
YOW5:20 p.m.Ottawa
12h 10m
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
11 Jan
LHR11:45 a.m.London Heathrow
17h 57m
2 stops
YOW12:42 a.m.Ottawa
18 Jan
YOW5:20 p.m.Ottawa
12h 25m
2 stops
LHR10:45 a.m.London Heathrow
KLM
4 Nov
LHR6:30 a.m.London Heathrow
13h 40m
2 stops
YOW3:10 p.m.Ottawa
20 Nov
YOW5:20 p.m.Ottawa
12h 25m
2 stops
LHR10:45 a.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 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$ 863. 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$ 875.

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$ 1,016. Flights from London to Ottawa on a Saturday will generally be more expensive and average around C$ 1,307. 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$ 1,016. At noon is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 1,121 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$ 1,047 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$ 747 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 38% 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$ 375

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$ 375. The best round-trip flight deal from London to Ottawa found on momondo in the last 72 hours is C$ 651.
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: 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$ 732Free CancellationRating
7.5
1,465 reviews
Search Air France flights
Air CanadaPriceFrom C$ 819Free CancellationRating
7.1
9,743 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 849Free CancellationRating
6.8
7,216 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$ 760. 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 7,216 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 22/7
Tue 29/7

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