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Cheap flights from London Heathrow Airport to Ottawa from C$ 492

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 17/9. 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 Heathrow Airport to Ottawa

Cheap round-trip flights

Air Canada Logo
5:40 p.m. - 4:54 p.m.LHR-YOW
28h 14m1 stop
Air Canada Logo
9:05 a.m. - 9:35 a.m.YOW-LHR
19h 30m1 stop
C$ 593Air Canada
Find Deal
Sat, 20 Sep - Mon, 22 Sep
Air Canada Logo
5:40 p.m. - 2:24 p.m.LHR-YOW
25h 44m1 stop
Air Canada Logo
6:00 a.m. - 9:35 a.m.YOW-LHR
22h 35m1 stop
C$ 594Air Canada
Find Deal
Sat, 20 Sep - Mon, 22 Sep
Air Canada Logo
5:40 p.m. - 9:00 a.m.LHR-YOW
20h 20m2 stops
Air Canada Logo
8:35 a.m. - 6:35 a.m.YOW-LHR
17h 00m1 stop
C$ 596Air Canada
Find Deal
Sat, 20 Sep - Mon, 22 Sep
Virgin Atlantic Logo
9:00 a.m. - 3:10 p.m.LHR-YOW
11h 10m1 stop
Virgin Atlantic Logo
5:20 p.m. - 10:30 a.m.YOW-LHR
12h 10m1 stop
C$ 868Virgin Atlantic
Find Deal
Thu, 13 Nov - Thu, 27 Nov
Virgin Atlantic Logo
6:15 a.m. - 3:05 p.m.LHR-YOW
13h 50m1 stop
Virgin Atlantic Logo
5:15 p.m. - 8:00 a.m.YOW-LHR
9h 45m1 stop
C$ 869Virgin Atlantic
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Air France Logo
3:20 p.m. - 12:22 a.m.LHR-YOW
14h 02m2 stops
Air France Logo
5:15 p.m. - 1:45 p.m.YOW-LHR
15h 30m1 stop
C$ 883Air France
Find Deal
Wed, 1 Oct - Mon, 13 Oct
Logo
8:40 a.m. - 11:04 p.m.LHR-YOW
19h 24m2 stops
Logo
2:40 p.m. - 9:35 a.m.YOW-LHR
13h 55m1 stop
C$ 886
Find Deal
Thu, 11 Sep - Thu, 18 Sep
Logo
8:40 a.m. - 11:04 p.m.LHR-YOW
19h 24m2 stops
Logo
6:55 p.m. - 6:30 a.m.YOW-LHR
6h 35mdirect
C$ 887
Find Deal
Thu, 11 Sep - Thu, 18 Sep
Air France Logo
7:20 p.m. - 4:10 p.m.LHR-YOW
24h 50m1 stop
Air France Logo
6:20 p.m. - 10:30 a.m.YOW-LHR
12h 10m1 stop
C$ 908Air France
Find Deal
Mon, 27 Oct - Fri, 31 Oct
Lufthansa Logo
2:05 p.m. - 4:25 p.m.LHR-YOW
7h 20mdirect
Lufthansa Logo
7:50 p.m. - 8:10 a.m.YOW-LHR
31h 20m2 stops
C$ 933Lufthansa
Find Deal
Mon, 20 Oct - Sat, 25 Oct

United Airlines flights from London Heathrow Airport to Ottawa

Our best United Airlines deals on London Heathrow Airport to Ottawa flight tickets
United Airlines
7 Aug
LHR7:45 a.m.London Heathrow
13h 58m
2 stops
YOW4:43 p.m.Ottawa
16 Aug
YOW2:48 p.m.Ottawa
10h 57m
1 stop
LHR6:45 a.m.London Heathrow
C$ 1,025
Find similar
United Airlines
6 Aug
LHR4:00 p.m.London Heathrow
22h 58m
2 stops
YOW9:58 a.m.Ottawa
20 Aug
YOW2:48 p.m.Ottawa
10h 07m
1 stop
LHR5:55 a.m.London Heathrow
C$ 1,063
Find similar
United Airlines
9 Aug
LHR9:30 a.m.London Heathrow
12h 13m
1 stop
YOW4:43 p.m.Ottawa
14 Aug
YOW10:25 a.m.Ottawa
15h 20m
2 stops
LHR6:45 a.m.London Heathrow
C$ 1,069
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
20 Sep
LHR5:40 p.m.London Heathrow
28h 14m
1 stop
YOW4:54 p.m.Ottawa
22 Sep
YOW9:05 a.m.Ottawa
19h 30m
1 stop
LHR9:35 a.m.London Heathrow
C$ 593
Find similar
Air Canada
20 Sep
LHR5:40 p.m.London Heathrow
25h 44m
1 stop
YOW2:24 p.m.Ottawa
22 Sep
YOW6:00 a.m.Ottawa
22h 35m
1 stop
LHR9:35 a.m.London Heathrow
C$ 594
Find similar
Air Canada
20 Sep
LHR5:40 p.m.London Heathrow
20h 20m
2 stops
YOW9:00 a.m.Ottawa
22 Sep
YOW8:35 a.m.Ottawa
17h 00m
1 stop
LHR6:35 a.m.London Heathrow
C$ 596
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 30 July 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

Sat 20/9

5:40 p.m.-4:54 p.m.

1 stop28h 14m

Ottawa

Mon 22/9

9:05 a.m.-9:35 a.m.

1 stop19h 30m

C$ 593

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 20/9

5:40 p.m.-2:24 p.m.

1 stop25h 44m

Ottawa

Mon 22/9

6:00 a.m.-9:35 a.m.

1 stop22h 35m

C$ 594

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 20/9

5:40 p.m.-9:00 a.m.

2 stops20h 20m

Ottawa

Mon 22/9

8:35 a.m.-6:35 a.m.

1 stop17h 00m

C$ 596

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 13/11

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

1 stop11h 10m

Ottawa

Thu 27/11

5:20 p.m.-10:30 a.m.

1 stop12h 10m

C$ 868

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 15/9

6:15 a.m.-3:05 p.m.

1 stop13h 50m

Ottawa

Mon 22/9

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

1 stop9h 45m

C$ 869

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 1/10

3:20 p.m.-12:22 a.m.

2 stops14h 02m

Ottawa

Mon 13/10

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

1 stop15h 30m

C$ 883

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 11/9

8:40 a.m.-11:04 p.m.

2 stops19h 24m

Ottawa

Thu 18/9

2:40 p.m.-9:35 a.m.

1 stop13h 55m

C$ 886

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 11/9

8:40 a.m.-11:04 p.m.

2 stops19h 24m

Ottawa

Thu 18/9

6:55 p.m.-6:30 a.m.

Nonstop6h 35m

C$ 887

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 27/10

7:20 p.m.-4:10 p.m.

1 stop24h 50m

Ottawa

Fri 31/10

6:20 p.m.-10:30 a.m.

1 stop12h 10m

C$ 908

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 20/10

2:05 p.m.-4:25 p.m.

Nonstop7h 20m

Ottawa

Sat 25/10

7:50 p.m.-8:10 a.m.

2 stops31h 20m

C$ 933

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$ 842. 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$ 918.

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$ 1,018. Flights from London Heathrow Airport to Ottawa on a Saturday will generally be more expensive and average around C$ 1,309. 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$ 1,011. At noon is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 1,123 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$ 1,045 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ottawa from London Heathrow Airport for as low as C$ 748 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 34% 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 July 2025, prices for London Heathrow Airport to Ottawa flights are approximately 27% cheaper 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$ 492

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$ 492. The best round-trip flight deal from London Heathrow Airport to Ottawa found on momondo in the last 72 hours is C$ 593.
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. Airlines offering direct flights are: Lufthansa and Air Canada.
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$ 733Free CancellationRating
7.5
1,465 reviews
Search Air France flights
Air CanadaPriceFrom C$ 807Free CancellationRating
7.1
9,837 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 850Free CancellationRating
6.8
7,269 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$ 762. Our users have rated Air Canada at 7.1/10.

  • Lufthansa Flights From London Heathrow Airport to Ottawa

    Across 7,269 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$ 787. 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
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?

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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