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Cheap flights from London Heathrow Airport to Ottawa from C$ 540

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 Heathrow Airport to Ottawa departing on 13/11. 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 Heathrow Airport to Ottawa

Cheap round-trip flights

KLM Logo
11:45 a.m. - 12:42 a.m.LHR-YOW
17h 57m2 stops
KLM Logo
5:40 a.m. - 8:45 a.m.YOW-LHR
22h 05m2 stops
C$ 810KLM
Find Deal
Thu, 20 Nov - Sun, 23 Nov
Air France Logo
8:55 a.m. - 3:10 p.m.LHR-YOW
11h 15m1 stop
Air France Logo
5:20 p.m. - 6:20 p.m.YOW-LHR
20h 00m1 stop
C$ 828Air France
Find Deal
Wed, 24 Dec - Tue, 6 Jan
Logo
1:00 p.m. - 12:42 a.m.LHR-YOW
16h 42m1 stop
Logo
5:40 a.m. - 7:10 a.m.YOW-LHR
20h 30m2 stops
C$ 831
Find Deal
Sat, 15 Nov - Sat, 22 Nov
Logo
5:50 p.m. - 12:22 a.m.LHR-YOW
11h 32m1 stop
Logo
5:15 p.m. - 8:00 a.m.YOW-LHR
9h 45m1 stop
C$ 837
Find Deal
Tue, 14 Oct - Thu, 23 Oct
Logo
5:50 p.m. - 12:22 a.m.LHR-YOW
11h 32m1 stop
Logo
5:15 p.m. - 1:45 p.m.YOW-LHR
15h 30m1 stop
C$ 841
Find Deal
Tue, 14 Oct - Thu, 23 Oct
Lufthansa Logo
12:40 p.m. - 3:00 p.m.LHR-YOW
7h 20mdirect
Lufthansa Logo
1:55 p.m. - 9:00 p.m.YOW-LHR
50h 05m2 stops
C$ 878Lufthansa
Find Deal
Wed, 1 Oct - Sat, 4 Oct
Air Canada Logo
9:00 a.m. - 2:21 p.m.LHR-YOW
10h 21m1 stop
Air Canada Logo
12:05 p.m. - 7:10 a.m.YOW-LHR
15h 05m2 stops
C$ 885Air Canada
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Sun, 1 Mar - Sun, 8 Mar
Lufthansa Logo
12:40 p.m. - 3:00 p.m.LHR-YOW
7h 20mdirect
Lufthansa Logo
5:55 p.m. - 6:35 a.m.YOW-LHR
31h 40m1 stop
C$ 894Lufthansa
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Wed, 1 Oct - Sat, 4 Oct
Air Canada Logo
9:30 a.m. - 8:17 p.m.LHR-YOW
15h 47m2 stops
Air Canada Logo
12:00 p.m. - 9:00 p.m.YOW-LHR
28h 00m1 stop
C$ 901Air Canada
Find Deal
Thu, 9 Oct - Thu, 16 Oct
SWISS Logo
6:00 a.m. - 5:37 p.m.LHR-YOW
16h 37m2 stops
SWISS Logo
10:50 a.m. - 8:05 a.m.YOW-LHR
16h 15m2 stops
C$ 966SWISS
Find Deal
Thu, 20 Nov - Sun, 23 Nov

Air France flights from London Heathrow Airport to Ottawa

Our best Air France deals on London Heathrow Airport to Ottawa flight tickets
Air France
24 Dec
LHR8:55 a.m.London Heathrow
11h 15m
1 stop
YOW3:10 p.m.Ottawa
6 Jan
YOW5:20 p.m.Ottawa
20h 00m
1 stop
LHR6:20 p.m.London Heathrow
C$ 828
Find similar
Air France
23 Dec
LHR7:20 p.m.London Heathrow
24h 50m
1 stop
YOW3:10 p.m.Ottawa
6 Jan
YOW5:20 p.m.Ottawa
20h 00m
1 stop
LHR6:20 p.m.London Heathrow
C$ 845
Find similar
Air France
9 Oct
LHR5:50 p.m.London Heathrow
11h 32m
1 stop
YOW12:22 a.m.Ottawa
16 Oct
YOW5:15 p.m.Ottawa
9h 45m
1 stop
LHR8:00 a.m.London Heathrow
C$ 848
Find similar

Air Canada flights from London Heathrow Airport to Ottawa

Our best Air Canada deals on London Heathrow Airport to Ottawa flight tickets
Air Canada
18 Sep
LHR6:50 a.m.London Heathrow
13h 14m
2 stops
YOW3:04 p.m.Ottawa
25 Sep
YOW9:55 p.m.Ottawa
18h 05m
2 stops
LHR9:00 p.m.London Heathrow
C$ 855
Find similar
Air Canada
18 Sep
LHR2:05 p.m.London Heathrow
7h 20m
YOW4:25 p.m.Ottawa
27 Sep
YOW6:40 p.m.Ottawa
30h 50m
1 stop
LHR6:30 a.m.London Heathrow
C$ 867
Find similar
Air Canada
17 Sep
LHR9:30 a.m.London Heathrow
15h 47m
2 stops
YOW8:17 p.m.Ottawa
24 Sep
YOW6:00 a.m.Ottawa
19h 30m
1 stop
LHR6:30 a.m.London Heathrow
C$ 877
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport 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 September 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 20/11

11:45 a.m.-12:42 a.m.

2 stops17h 57m

Ottawa

Sun 23/11

5:40 a.m.-8:45 a.m.

2 stops22h 05m

C$ 810

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 24/12

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

1 stop11h 15m

Ottawa

Tue 6/1

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

1 stop20h 00m

C$ 828

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 15/11

1:00 p.m.-12:42 a.m.

1 stop16h 42m

Ottawa

Sat 22/11

5:40 a.m.-7:10 a.m.

2 stops20h 30m

C$ 831

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 14/10

5:50 p.m.-12:22 a.m.

1 stop11h 32m

Ottawa

Thu 23/10

5:15 p.m.-8:00 a.m.

1 stop9h 45m

C$ 837

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 14/10

5:50 p.m.-12:22 a.m.

1 stop11h 32m

Ottawa

Thu 23/10

5:15 p.m.-1:45 p.m.

1 stop15h 30m

C$ 841

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 1/10

12:40 p.m.-3:00 p.m.

Nonstop7h 20m

Ottawa

Sat 4/10

1:55 p.m.-9:00 p.m.

2 stops50h 05m

C$ 878

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sun 1/3

9:00 a.m.-2:21 p.m.

1 stop10h 21m

Ottawa

Sun 8/3

12:05 p.m.-7:10 a.m.

2 stops15h 05m

C$ 885

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 1/10

12:40 p.m.-3:00 p.m.

Nonstop7h 20m

Ottawa

Sat 4/10

5:55 p.m.-6:35 a.m.

1 stop31h 40m

C$ 894

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 9/10

9:30 a.m.-8:17 p.m.

2 stops15h 47m

Ottawa

Thu 16/10

12:00 p.m.-9:00 p.m.

1 stop28h 00m

C$ 900

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 20/11

6:00 a.m.-5:37 p.m.

2 stops16h 37m

Ottawa

Sun 23/11

10:50 a.m.-8:05 a.m.

2 stops16h 15m

C$ 966

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 Heathrow Airport 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 March is, on average, the cheapest month to fly to Ottawa from London Heathrow Airport, with most prices found around C$ 848. If you aren’t able to travel to Ottawa during the month of March, then flying in April is also cheap. Prices for this month can be found on momondo for an average of C$ 924.

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$ 1,019. Flights from London Heathrow Airport to Ottawa on a Saturday will generally be more expensive and average around C$ 1,318. 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 Heathrow Airport to Ottawa during this time can be as low as C$ 1,019. 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 Heathrow to Ottawa flight route?

Fly from London Heathrow to Ottawa for the best London Heathrow - 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 Heathrow Airport 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 Heathrow Airport for as low as C$ 752 on momondo.

What cabin class options are available on London Heathrow to Ottawa flights?

There are 3 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to Ottawa flights?

You could potentially save up to 31% on your flight if you consider stops on a London Heathrow Airport to Ottawa flight.

How have London Heathrow Airport to Ottawa flight prices changed over time?

As of September 2025, prices for London Heathrow Airport to Ottawa flights are approximately 11% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Ottawa

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Ottawa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to Ottawa (LHR to YOW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Ottawa

Best price found

C$ 1,059

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 Heathrow Airport in the past 72 hours is C$ 1,059. The best round-trip flight deal from London Heathrow Airport to Ottawa found on momondo in the last 72 hours is C$ 924.
The fastest flight from London Heathrow Airport to Ottawa takes 7h 20m
Direct flights go from London Heathrow Airport to Ottawa on Tuesday, Thursday, Friday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Ottawa: Ottawa (YOW)
Search flight deals

  • How far is London Heathrow to Ottawa by plane?

    Ottawa is 5338.5 km away from London Heathrow. A reasonable flight in good conditions will take 7h 20m.

  • When did momondo last update prices for flights from London Heathrow Airport to Ottawa Airport?

    Prices for flights from London Heathrow Airport to Ottawa Airport were last updated today.

  • How many operators does momondo search for flights from London Heathrow Airport to Ottawa Airport?

  • How old do you have to be to fly from London Heathrow Airport to Ottawa Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Ottawa Airport.

  • What documentation or ID do you need to fly to Ottawa Airport?

    The necessary travel and health documents for your Ottawa Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London Heathrow Airport to Ottawa?

  • What is the most popular airline from London Heathrow Airport to Ottawa?

Best airlines flying from London Heathrow Airport to Ottawa

Compare and see reviews for airlines that fly from London Heathrow Airport to Ottawa with momondo
Airline
Rating
Free Cancellation
Price
Air FrancePriceFrom C$ 738Free CancellationRating
7.4
1,469 reviews
Search Air France flights
Air CanadaPriceFrom C$ 812Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 856Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights

  • Air Canada Flights From London Heathrow Airport to Ottawa

    Air Canada is one of the most popular airlines flying from London Heathrow Airport to Ottawa, operating 4 flights/week on average for this route. A good Air Canada flight deal for London Heathrow Airport to Ottawa starts from C$ 586 round-trip, up to an average price of C$ 757. Our users have rated Air Canada at 7.1/10.

  • Lufthansa Flights From London Heathrow Airport to Ottawa

    Across 7,409 Lufthansa reviews on momondo, the average score is 6.8/10. Lufthansa flies from London Heathrow Airport to Ottawa about 4 times each week, with ticket deals ranging from C$ 618 to C$ 698. Price data is based on momondo searches in the last 72 hours.

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
Petawawa
Winchester
Prescott

Why use momondo?

Why should I use momondo to find a flight deal from London to Ottawa?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Ottawa for you.

Can I find flights from London to Ottawa with flexible booking policies on momondo?

Yes. All flights to Ottawa from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

If you are simply researching potential flights to Ottawa, momondo offers a useful price alert feature which will track prices for flights to Ottawa from London and alert you when they change.

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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