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Cheap flights from London to Ottawa from C$ 527

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 25/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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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
2:45 p.m. - 3:10 p.m.
LHR
-
YOW
29h 25m1 stop
Virgin Atlantic Logo
5:20 p.m. - 8:00 a.m.
YOW
-
LHR
9h 40m1 stop
C$ 881Virgin Atlantic
Tue, 13 Jan - Tue, 20 Jan
Air France Logo
6:20 a.m. - 3:10 p.m.
LHR
-
YOW
13h 50m1 stop
Air France Logo
6:20 p.m. - 6:20 p.m.
YOW
-
LHR
20h 00m1 stop
C$ 883Air France
Sun, 15 Feb - Tue, 17 Mar
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$ 887Air Transat
Sat, 10 Jan - Sun, 11 Jan
Air Transat Logo
11:40 a.m. - 8:25 a.m.
LGW
-
YOW
24h 45m1 stop
Air Transat Logo
7:00 a.m. - 7:55 a.m.
YOW
-
LGW
19h 55m1 stop
C$ 890Air Transat
Sun, 8 Mar - Mon, 20 Jul
Air Canada Logo
12:40 p.m. - 6:33 p.m.
LHR
-
YOW
10h 53m1 stop
Air Canada Logo
10:05 p.m. - 9:00 p.m.
YOW
-
LHR
17h 55m2 stops
C$ 891Air Canada
Fri, 22 May - Wed, 27 May
Air Transat Logo
11:40 a.m. - 6:33 p.m.
LGW
-
YOW
11h 53m1 stop
Air Transat Logo
6:55 p.m. - 9:45 a.m.
YOW
-
LGW
10h 50m1 stop
C$ 891Air Transat
Sun, 15 Feb - Mon, 16 Mar
Air Canada Logo
9:30 a.m. - 12:25 p.m.
LHR
-
YOW
7h 55mdirect
Air Canada Logo
8:30 p.m. - 10:00 a.m.
YOW
-
LHR
32h 30m2 stops
C$ 894Air Canada
Mon, 11 May - Sun, 17 May
Austrian Airlines Logo
6:00 a.m. - 6:38 p.m.
LHR
-
YOW
16h 38m2 stops
Austrian Airlines Logo
7:25 p.m. - 11:20 a.m.
YOW
-
LHR
11h 55m1 stop
C$ 895Austrian Airlines
Thu, 12 Mar - Mon, 16 Mar
Lufthansa Logo
9:40 a.m. - 6:38 p.m.
LCY
-
YOW
13h 58m2 stops
Lufthansa Logo
2:05 p.m. - 9:15 a.m.
YOW
-
LCY
14h 10m2 stops
C$ 963Lufthansa
Thu, 22 Jan - Tue, 27 Jan
Lufthansa Logo
9:50 a.m. - 11:08 p.m.
LCY
-
YOW
18h 18m2 stops
Lufthansa Logo
12:00 p.m. - 5:40 p.m.
YOW
-
LCY
24h 40m2 stops
C$ 1,295Lufthansa
Wed, 7 Jan - Wed, 14 Jan

Lufthansa flights from London to Ottawa

Our best Lufthansa deals on London to Ottawa flight tickets
Lufthansa
23 Mar
LHR7:30 p.m.London Heathrow
24h 53m
2 stops
YOW4:23 p.m.Ottawa
30 Mar
YOW6:20 p.m.Ottawa
10h 40m
1 stop
LHR10:00 a.m.London Heathrow
C$ 943
Find similar
Lufthansa
22 Jan
LCY9:40 a.m.London City
13h 58m
2 stops
YOW6:38 p.m.Ottawa
27 Jan
YOW2:05 p.m.Ottawa
14h 10m
2 stops
LCY9:15 a.m.London City
C$ 963
Find similar
Lufthansa
11 Jan
LHR12:00 p.m.London Heathrow
7h 30m
YOW2:30 p.m.Ottawa
19 Jan
YOW4:00 p.m.Ottawa
10h 10m
1 stop
LHR7:10 a.m.London Heathrow
C$ 965
Find similar

Air Transat flights from London to Ottawa

Our best Air Transat deals on London to Ottawa flight tickets
Air Transat
10 Jan
LGW11:40 a.m.London Gatwick
25h 45m
1 stop
YOW8:25 a.m.Ottawa
11 Jan
YOW6:55 p.m.Ottawa
9h 50m
1 stop
LGW9:45 a.m.London Gatwick
C$ 887
Find similar
Air Transat
8 Mar
LGW11:40 a.m.London Gatwick
17h 01m
1 stop
YOW12:41 a.m.Ottawa
16 Jul
YOW5:05 p.m.Ottawa
12h 40m
1 stop
LGW10:45 a.m.London Gatwick
C$ 890
Find similar
Air Transat
15 Feb
LGW11:40 a.m.London Gatwick
11h 53m
1 stop
YOW6:33 p.m.Ottawa
16 Mar
YOW6:55 p.m.Ottawa
10h 50m
1 stop
LGW9:45 a.m.London Gatwick
C$ 891
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 11 December 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

Tue 13/1

2:45 p.m.-3:10 p.m.

1 stop29h 25m

Ottawa

Tue 20/1

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

1 stop9h 40m

C$ 881

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sun 15/2

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

1 stop13h 50m

Ottawa

Tue 17/3

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

1 stop20h 00m

C$ 883

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Sat 10/1

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

1 stop25h 45m

Ottawa

Sun 11/1

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

1 stop9h 50m

C$ 887

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Sun 8/3

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

1 stop24h 45m

Ottawa

Mon 20/7

7:00 a.m.-7:55 a.m.

1 stop19h 55m

C$ 890

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 22/5

12:40 p.m.-6:33 p.m.

1 stop10h 53m

Ottawa

Wed 27/5

10:05 p.m.-9:00 p.m.

2 stops17h 55m

C$ 891

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Sun 15/2

11:40 a.m.-6:33 p.m.

1 stop11h 53m

Ottawa

Mon 16/3

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

1 stop10h 50m

C$ 891

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 11/5

9:30 a.m.-12:25 p.m.

Nonstop7h 55m

Ottawa

Sun 17/5

8:30 p.m.-10:00 a.m.

2 stops32h 30m

C$ 894

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 12/3

6:00 a.m.-6:38 p.m.

2 stops16h 38m

Ottawa

Mon 16/3

7:25 p.m.-11:20 a.m.

1 stop11h 55m

C$ 895

LondonOttawa

LCY - YOW

LCYYOW

London City

Thu 22/1

9:40 a.m.-6:38 p.m.

2 stops13h 58m

Ottawa

Tue 27/1

2:05 p.m.-9:15 a.m.

2 stops14h 10m

C$ 963

LondonOttawa

LCY - YOW

LCYYOW

London City

Wed 7/1

9:50 a.m.-11:08 p.m.

2 stops18h 18m

Ottawa

Wed 14/1

12:00 p.m.-5:40 p.m.

2 stops24h 40m

C$ 1,295

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$ 869. If you aren’t able to travel to Ottawa during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of C$ 905.

What is the cheapest day to depart on your flight to Ottawa?

Our data shows that Friday is the least expensive day to fly to Ottawa. Tickets to fly out on this day can be as low as C$ 940. Flights from London to Ottawa on a Sunday will generally be more expensive and average around C$ 2,043. 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$ 1,014. At noon is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 1,116 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$ 1,013 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$ 694 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 December 2025, prices for London to Ottawa flights are approximately 40% 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$ 920

Fastest flight time

7h 30m

Direct flights

Mon, Thu, Fri, Sat and Sun

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from London in the past 72 hours is C$ 920. The best round-trip flight deal from London to Ottawa found on momondo in the last 72 hours is C$ 981.
The fastest flight from London to Ottawa takes 7h 30m
Direct flights go from London to Ottawa on Monday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Ottawa. From London there are direct flights to 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
Air FrancePriceFrom C$ 794Free CancellationRating
7.4
1,504 reviews
Search Air France flights
Air CanadaPriceFrom C$ 800Free CancellationRating
7.1
10,516 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 852Free CancellationRating
6.8
7,626 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 2 flights/week on average for this route. A good Air Canada flight deal for London to Ottawa starts from C$ 800 round-trip, up to an average price of C$ 1,022. Our users have rated Air Canada at 7.1/10.

  • Lufthansa Flights From London to Ottawa

    C$ 852 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$ 1,003, however, with flight time and availability significantly affecting the price. Lufthansa (6.8/10 from 7,626 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
Perth
Smiths Falls
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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