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Cheap flights from London to Ottawa from C$ 496

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 25/12. 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.
Air Canada Logo
6:50 a.m. - 2:07 p.m.LHR-YOW
12h 17m2 stops
Air Canada Logo
4:10 p.m. - 8:35 p.m.YOW-LHR
23h 25m2 stops
C$ 765Air Canada
Find Deal
Sun, 9 Nov - Mon, 24 Nov
Multiple Airlines Logo
11:10 a.m. - 10:18 p.m.LHR-YOW
16h 08m2 stops
Multiple Airlines Logo
10:20 a.m. - 7:10 a.m.YOW-LHR
15h 50m2 stops
C$ 778Multiple Airlines
Find Deal
Wed, 12 Nov - Wed, 19 Nov
Multiple Airlines Logo
9:00 a.m. - 10:18 p.m.LHR-YOW
18h 18m2 stops
Multiple Airlines Logo
6:05 p.m. - 7:10 a.m.YOW-LHR
32h 05m2 stops
C$ 784Multiple Airlines
Find Deal
Thu, 15 Jan - Sat, 31 Jan
Air Transat Logo
11:40 a.m. - 12:39 a.m.LGW-YOW
17h 59m1 stop
Air Transat Logo
10:00 a.m. - 9:45 a.m.YOW-LGW
18h 45m1 stop
C$ 879Air Transat
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Wed, 19 Nov - Wed, 26 Nov
Virgin Atlantic Logo
8:55 a.m. - 3:20 p.m.LHR-YOW
11h 25m1 stop
Virgin Atlantic Logo
5:20 p.m. - 8:00 a.m.YOW-LHR
9h 40m1 stop
C$ 880Virgin Atlantic
Find Deal
Tue, 11 Nov - Tue, 18 Nov
United Airlines Logo
6:30 a.m. - 9:18 p.m.LHR-YOW
19h 48m2 stops
United Airlines Logo
5:00 a.m. - 9:10 a.m.YOW-LHR
23h 10m2 stops
C$ 882United Airlines
Find Deal
Wed, 12 Nov - Wed, 19 Nov
Virgin Atlantic Logo
9:00 a.m. - 3:10 p.m.LHR-YOW
11h 10m1 stop
Virgin Atlantic Logo
5:20 p.m. - 6:20 p.m.YOW-LHR
20h 00m1 stop
C$ 883Virgin Atlantic
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Thu, 6 Nov - Thu, 13 Nov
Lufthansa Logo
11:10 a.m. - 5:18 p.m.LHR-YOW
11h 08m1 stop
Lufthansa Logo
6:05 p.m. - 11:20 a.m.YOW-LHR
12h 15m1 stop
C$ 892Lufthansa
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Thu, 13 Nov - Mon, 17 Nov
Lufthansa Logo
1:25 p.m. - 10:18 p.m.LHR-YOW
13h 53m1 stop
Lufthansa Logo
9:55 p.m. - 9:20 a.m.YOW-LHR
6h 25mdirect
C$ 900Lufthansa
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Wed, 12 Nov - Wed, 19 Nov
Air Transat Logo
11:40 a.m. - 8:24 a.m.LGW-YOW
25h 44m1 stop
Air Transat Logo
6:55 p.m. - 9:45 a.m.YOW-LGW
9h 50m1 stop
C$ 901Air Transat
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Sun, 9 Nov - Mon, 24 Nov

KLM flights from London to Ottawa

Our best KLM deals on London to Ottawa flight tickets
KLM
30 Oct
LHR6:30 a.m.London Heathrow
13h 40m
2 stops
YOW4:10 p.m.Ottawa
6 Jan
YOW5:20 p.m.Ottawa
15h 30m
2 stops
LHR1:50 p.m.London Heathrow
C$ 1,248
Find similar
KLM
30 Oct
LHR6:30 a.m.London Heathrow
13h 40m
2 stops
YOW4:10 p.m.Ottawa
6 Jan
YOW5:20 p.m.Ottawa
15h 30m
2 stops
LHR1:50 p.m.London Heathrow
C$ 1,250
Find similar
KLM
28 Mar
LCY10:00 a.m.London City
18h 39m
2 stops
YOW12:39 a.m.Ottawa
3 Apr
YOW5:15 p.m.Ottawa
13h 25m
2 stops
LCY11:40 a.m.London City
C$ 1,598
Find similar

Virgin Atlantic flights from London to Ottawa

Our best Virgin Atlantic deals on London to Ottawa flight tickets
Virgin Atlantic
11 Nov
LHR8:55 a.m.London Heathrow
11h 25m
1 stop
YOW3:20 p.m.Ottawa
18 Nov
YOW5:20 p.m.Ottawa
9h 40m
1 stop
LHR8:00 a.m.London Heathrow
C$ 880
Find similar
Virgin Atlantic
6 Nov
LHR9:00 a.m.London Heathrow
11h 10m
1 stop
YOW3:10 p.m.Ottawa
13 Nov
YOW5:20 p.m.Ottawa
20h 00m
1 stop
LHR6:20 p.m.London Heathrow
C$ 883
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 16 October 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 9/11

6:50 a.m.-2:07 p.m.

2 stops12h 17m

Ottawa

Mon 24/11

4:10 p.m.-8:35 p.m.

2 stops23h 25m

C$ 765

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 12/11

11:10 a.m.-10:18 p.m.

2 stops16h 08m

Ottawa

Wed 19/11

10:20 a.m.-7:10 a.m.

2 stops15h 50m

C$ 778

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 15/1

9:00 a.m.-10:18 p.m.

2 stops18h 18m

Ottawa

Sat 31/1

6:05 p.m.-7:10 a.m.

2 stops32h 05m

C$ 784

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Wed 19/11

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

1 stop17h 59m

Ottawa

Wed 26/11

10:00 a.m.-9:45 a.m.

1 stop18h 45m

C$ 879

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 11/11

8:55 a.m.-3:20 p.m.

1 stop11h 25m

Ottawa

Tue 18/11

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

1 stop9h 40m

C$ 880

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 12/11

6:30 a.m.-9:18 p.m.

2 stops19h 48m

Ottawa

Wed 19/11

5:00 a.m.-9:10 a.m.

2 stops23h 10m

C$ 882

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 6/11

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

1 stop11h 10m

Ottawa

Thu 13/11

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

1 stop20h 00m

C$ 883

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 13/11

11:10 a.m.-5:18 p.m.

1 stop11h 08m

Ottawa

Mon 17/11

6:05 p.m.-11:20 a.m.

1 stop12h 15m

C$ 892

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 12/11

1:25 p.m.-10:18 p.m.

1 stop13h 53m

Ottawa

Wed 19/11

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

Nonstop6h 25m

C$ 900

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Sun 9/11

11:40 a.m.-8:24 a.m.

1 stop25h 44m

Ottawa

Mon 24/11

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

1 stop9h 50m

C$ 901

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 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$ 882. 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$ 901.

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$ 1,336. 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$ 1,032. At noon is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 1,136 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$ 1,045 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$ 706 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 October 2025, prices for London to Ottawa flights are approximately 20% 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$ 1,032

Fastest flight time

7h 20m

Direct flights

Mon, Thu, Sat and Sun

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from London in the past 72 hours is C$ 1,032. The best round-trip flight deal from London to Ottawa found on momondo in the last 72 hours is C$ 1,030.
The fastest flight from London to Ottawa takes 7h 20m
Direct flights go from London to Ottawa on Monday, Thursday, Saturday and Sunday. 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$ 640Free CancellationRating
7.5
670 reviews
Search Virgin Atlantic flights
Air FrancePriceFrom C$ 809Free CancellationRating
7.4
1,476 reviews
Search Air France flights
Air CanadaPriceFrom C$ 815Free CancellationRating
7.1
10,307 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 868Free CancellationRating
6.8
7,497 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$ 580 round-trip, up to an average price of C$ 728. 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$ 698, however, with flight time and availability significantly affecting the price. Lufthansa (6.8/10 from 7,497 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
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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