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Cheap flights from London Heathrow Airport to Ottawa from £305

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 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London Heathrow Airport to Ottawa

Cheap return flights

Air Canada Logo
17:40 - 16:54LHR-YOW
28h 14m1 stop
Air Canada Logo
09:05 - 09:35YOW-LHR
19h 30m1 stop
£323Air Canada
Find Deal
Sat, 20 Sep - Mon, 22 Sep
Air Canada Logo
17:40 - 14:24LHR-YOW
25h 44m1 stop
Air Canada Logo
06:00 - 09:35YOW-LHR
22h 35m1 stop
£324Air Canada
Find Deal
Sat, 20 Sep - Mon, 22 Sep
Air Canada Logo
17:40 - 09:00LHR-YOW
20h 20m2 stops
Air Canada Logo
08:35 - 06:35YOW-LHR
17h 00m1 stop
£324Air Canada
Find Deal
Sat, 20 Sep - Mon, 22 Sep
Air Canada Logo
17:40 - 16:54LHR-YOW
28h 14m1 stop
Air Canada Logo
14:40 - 09:35YOW-LHR
13h 55m1 stop
£342Air Canada
Find Deal
Sat, 20 Sep - Mon, 22 Sep
Virgin Atlantic Logo
09:00 - 15:10LHR-YOW
11h 10m1 stop
Virgin Atlantic Logo
17:20 - 10:30YOW-LHR
12h 10m1 stop
£473Virgin Atlantic
Find Deal
Thu, 13 Nov - Thu, 27 Nov
Virgin Atlantic Logo
06:15 - 15:05LHR-YOW
13h 50m1 stop
Virgin Atlantic Logo
17:15 - 08:00YOW-LHR
9h 45m1 stop
£474Virgin Atlantic
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Logo
06:00 - 00:22LHR-YOW
23h 22m2 stops
Logo
05:55 - 21:00YOW-LHR
34h 05m2 stops
£477
Find Deal
Tue, 16 Sep - Wed, 24 Sep
Air France Logo
15:20 - 00:22LHR-YOW
14h 02m2 stops
Air France Logo
17:15 - 13:45YOW-LHR
15h 30m1 stop
£481Air France
Find Deal
Wed, 1 Oct - Mon, 13 Oct
Logo
08:40 - 23:04LHR-YOW
19h 24m2 stops
Logo
14:40 - 09:35YOW-LHR
13h 55m1 stop
£483
Find Deal
Thu, 11 Sep - Thu, 18 Sep
Air France Logo
19:20 - 16:10LHR-YOW
24h 50m1 stop
Air France Logo
18:20 - 10:30YOW-LHR
12h 10m1 stop
£495Air France
Find Deal
Mon, 27 Oct - Fri, 31 Oct

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 Sept
LHR17:40London Heathrow
28h 14m
1 stop
YOW16:54Ottawa
22 Sept
YOW09:05Ottawa
19h 30m
1 stop
LHR09:35London Heathrow
£323
Find similar
Air Canada
20 Sept
LHR17:40London Heathrow
25h 44m
1 stop
YOW14:24Ottawa
22 Sept
YOW06:00Ottawa
22h 35m
1 stop
LHR09:35London Heathrow
£324
Find similar
Air Canada
20 Sept
LHR17:40London Heathrow
20h 20m
2 stops
YOW09:00Ottawa
22 Sept
YOW08:35Ottawa
17h 00m
1 stop
LHR06:35London Heathrow
£324
Find similar

Lufthansa flights from London Heathrow Airport to Ottawa

Our best Lufthansa deals on London Heathrow Airport to Ottawa flight tickets
Lufthansa
6 Aug
LHR09:00London Heathrow
20h 20m
2 stops
YOW00:20Ottawa
13 Aug
YOW15:55Ottawa
18h 45m
2 stops
LHR15:40London Heathrow
£729
Find similar
Lufthansa
6 Aug
LHR08:30London Heathrow
20h 50m
2 stops
YOW00:20Ottawa
11 Aug
YOW13:55Ottawa
15h 00m
2 stops
LHR09:55London Heathrow
£730
Find similar
Lufthansa
6 Aug
LHR07:30London Heathrow
21h 50m
2 stops
YOW00:20Ottawa
13 Aug
YOW17:55Ottawa
16h 45m
2 stops
LHR15:40London Heathrow
£751
Find similar

momondo Fare Finder

 
Customise 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 279,928 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

17:40-16:54

1 stop28h 14m

Ottawa

Mon 22/9

09:05-09:35

1 stop19h 30m

£323

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 20/9

17:40-14:24

1 stop25h 44m

Ottawa

Mon 22/9

06:00-09:35

1 stop22h 35m

£324

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 20/9

17:40-09:00

2 stops20h 20m

Ottawa

Mon 22/9

08:35-06:35

1 stop17h 00m

£324

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 20/9

17:40-16:54

1 stop28h 14m

Ottawa

Mon 22/9

14:40-09:35

1 stop13h 55m

£342

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 13/11

09:00-15:10

1 stop11h 10m

Ottawa

Thu 27/11

17:20-10:30

1 stop12h 10m

£473

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 15/9

06:15-15:05

1 stop13h 50m

Ottawa

Mon 22/9

17:15-08:00

1 stop9h 45m

£474

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 16/9

06:00-00:22

2 stops23h 22m

Ottawa

Wed 24/9

05:55-21:00

2 stops34h 05m

£477

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 1/10

15:20-00:22

2 stops14h 02m

Ottawa

Mon 13/10

17:15-13:45

1 stop15h 30m

£481

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 11/9

08:40-23:04

2 stops19h 24m

Ottawa

Thu 18/9

14:40-09:35

1 stop13h 55m

£483

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 27/10

19:20-16:10

1 stop24h 50m

Ottawa

Fri 31/10

18:20-10:30

1 stop12h 10m

£495

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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?

In general, March is the cheapest month to fly from London Heathrow Airport to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £459. If you aren’t able to travel during the month of March, then book flights to Ottawa from London Heathrow Airport during April instead. Flights to Ottawa in April, while not as cheap as those in March, still average around £500.

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

The cheapest day to depart on your flight to Ottawa is on a Monday when prices can be found for as low as £553. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around £614. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ottawa.

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

Flying to Ottawa from London Heathrow Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as £481 when looking at flights departing in the evening. In the morning is when there is more demand to fly to Ottawa, so prices are often more expensive at around £589 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 £569 when searching weeks before you fly. 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 £408 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 32% 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 return 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

£305

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 £305. The best return flight deal from London Heathrow Airport to Ottawa found on momondo in the last 72 hours is £323.
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?

    The straight-line distance from London Heathrow to Ottawa is 3317.2 mi. 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 refresh daily.

  • 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 for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport 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 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 CanadaPriceFrom £315Free CancellationRating
7.1
9,822 reviews
Search Air Canada flights
United AirlinesPriceFrom £338Free CancellationRating
7.4
8,899 reviews
Search United Airlines flights
KLMPriceFrom £360Free CancellationRating
7.8
1,383 reviews
Search KLM flights
Air FrancePriceFrom £365Free CancellationRating
7.5
1,465 reviews
Search Air France flights
Virgin AtlanticPriceFrom £380Free CancellationRating
7.4
655 reviews
Search Virgin Atlantic flights
LufthansaPriceFrom £454Free CancellationRating
6.8
7,265 reviews
Search Lufthansa flights

  • United Airlines Flights From London Heathrow Airport to Ottawa

    United Airlines flies from London Heathrow Airport to Ottawa around 4 times per week, with 8,896 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from London Heathrow Airport to Ottawa in the last 72 hours was £451 (round-trip), much lower than the average airfare cost of £473 for United Airlines flights on this route.

  • Air Canada Flights From London Heathrow Airport to Ottawa

    Across 9,826 Air Canada reviews on momondo, the average score is 7.1/10. Air Canada flies from London Heathrow Airport to Ottawa about 4 times each week, with ticket deals ranging from £421 to £756. 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
Smiths Falls

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?

Flights from London to Ottawa with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Ottawa?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Ottawa.

I’m not ready to book a flight from London to Ottawa right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ottawa from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ottawa trip

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