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Cheap flights from London Heathrow Airport to Ottawa from £252

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
9 Jul — 16 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Ottawa are usually found in May or June, booked 76 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from Heathrow to Ottawa

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Ottawa
Explore the most affordable flight options available from Heathrow to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 June 2026.

Sat 13/606:00
LHR
-
YOW
2 stops19h 56m
Austrian Airlines
Sat 20/620:05
YOW
-
LHR
1 stop10h 45m
Austrian Airlines
Deal found 7/6£381
Fri 19/612:40
LHR
-
YOW
1 stop11h 13m
Air Canada
Mon 22/618:55
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 5/6£385
Sun 13/912:40
LHR
-
YOW
1 stop11h 00m
Air Canada
Sat 19/914:35
YOW
-
LHR
1 stop10h 55m
Air Canada
Deal found 4/6£388
Mon 21/906:00
LHR
-
YOW
2 stops32h 24m
Air Canada
Thu 1/1018:55
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 9/6£390
Sat 13/606:00
LHR
-
YOW
2 stops21h 11m
Air Canada
Sat 20/617:30
YOW
-
LHR
1 stop22h 30m
Air Canada
Deal found 8/6£391
Thu 24/909:30
LHR
-
YOW
Nonstop7h 55m
Air Canada
Thu 8/1018:55
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 7/6£392
Wed 1/714:10
LHR
-
YOW
Nonstop7h 10m
Air Canada
Thu 9/718:55
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 8/6£393
Thu 17/906:50
LHR
-
YOW
2 stops13h 20m
Air Canada
Wed 30/921:00
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 7/6£394

Find flight deals from Heathrow to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 9 June 2026.

Round-trip from

£385

One-way from

£252

Popular in

December

Cheapest in

May

Average price

£513

Good round-trip deal

£476 or less

Good one-way deal

£726 or less
Air Canada
  • Air Canada
  • 19/6-22/6
  • 1 total stop
  • 17h 48m total
  • London to Ottawa
Search Deals
21/9
  • 21/9
  • 3 total stops
  • 32h 30m total
  • London to Ottawa
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£37 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Ottawa.
Search Deals
Price to beat on a one-way flight from London Heathrow to Ottawa.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 9 June 2026.
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

Cheapest return flight

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 28/9

07:30-22:35

2 stops20h 05m

Ottawa

Mon 12/10

18:01-10:25

1 stop11h 24m

£428

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 25/6

07:30-18:48

2 stops16h 18m

Ottawa

Mon 6/7

12:00-06:55

2 stops13h 55m

£432

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 9/7

07:30-21:35

2 stops19h 05m

Ottawa

Thu 16/7

06:00-07:15

2 stops20h 15m

£484

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 31/8

12:15-18:59

1 stop11h 44m

Ottawa

Thu 10/9

17:57-20:40

1 stop21h 43m

£540

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 1/9

06:30-15:00

2 stops13h 30m

Ottawa

Mon 7/9

17:10-07:55

1 stop9h 45m

£554

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 1/9

09:30-23:54

2 stops19h 24m

Ottawa

Tue 8/9

06:05-21:25

1 stop10h 20m

£567

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 13/8

10:25-23:54

2 stops18h 29m

Ottawa

Thu 20/8

06:05-20:40

1 stop9h 35m

£567

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 24/7

07:45-23:54

2 stops21h 09m

Ottawa

Sat 8/8

06:05-21:25

1 stop10h 20m

£567

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 7/8

09:30-23:54

2 stops19h 24m

Ottawa

Fri 14/8

06:05-20:40

1 stop9h 35m

£567

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 3/7

07:45-23:54

2 stops21h 09m

Ottawa

Fri 10/7

06:05-20:40

1 stop9h 35m

£570

Flights are sorted by cheapest return flights first.

Deals found on 4/6

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Heathrow to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Ottawa

How far ahead should I book a flight from London Heathrow Airport to Ottawa?

Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Ottawa. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Ottawa?

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of £418). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of £713). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to YOW?

Find hourly flight availability from Heathrow to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 9 June 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Ottawa as you normally would.

How much does it cost for a return flight from London Heathrow Airport to Ottawa?

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated 9 June 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Ottawa, such as Virgin Atlantic,Air France, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
689 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Air France
7.4
Good
1,598 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Air Canada
7.1
Good
11,154 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Lufthansa
6.8
Okay
8,052 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Food

6.9

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ottawa from London Heathrow?

    Ottawa (YOW), located 6.6 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Ottawa. 4 airlines have flights to Ottawa from London Heathrow on a regular basis. Booking flights from London Heathrow to Ottawa should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.

  • How long is the flight from London Heathrow Airport to Ottawa?

    Departing from London Heathrow Airport to Ottawa will take you 20h 05m. The distance between London Heathrow Airport and Ottawa is about 3320 mi.

  • What are the cheapest airlines flying from London Heathrow Airport to Ottawa round-trip?

    Our cheapest airline available from London Heathrow Airport to Ottawa is Air France. Our recent data shows that you can find tickets from as low as £370 on this airline. Additional options worth looking into are Air Canada and Virgin Atlantic, starting at £374 and £375 round-trip. Users have found that Air France is 34% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Ottawa one-way?

    For one-way options, check prices for Virgin Atlantic. According to our data, you can fly for as low as £293. Users have also found prices from £517 and £576 on Lufthansa and Air Canada, respectively.

  • What are the most reliable airlines from London Heathrow Airport to Ottawa?

    Before booking your flight to Ottawa from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Aegean Airlines (94%), Air Canada (88%), Austrian Airlines( 88%).

  • What are the cheapest flights from London Heathrow Airport to Ottawa?

    Looking at all options, your cheapest flight can be booked for £388. While the most popular route (London Heathrow - Ottawa) can be booked for £401 on average, our data indicates £647 when flying from London Heathrow Airport to Ottawa.

  • Can I find deals for flights from Heathrow to Ottawa that include hotel bookings?

    Yes. In addition to deals on Heathrow to Ottawa flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Ottawa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Ottawa.

  • Can I find deals for business class flights from Heathrow to Ottawa?

    Yes. Cheapflights offers flight deals from Heathrow to Ottawa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Ottawa?

    Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of £418). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of £713). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Brockville
Smiths Falls

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Heathrow to Ottawa

Discover the top 4 airlines that operate flights from Heathrow to Ottawa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 9 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£370Average£542FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air CanadaCheapest£374Average£564FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapest£375Average£467FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£425Average£560FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Ottawa?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ottawa from Heathrow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Ottawa?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Ottawa for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Heathrow to Ottawa with no change fees?

Certainly. Search results for flights to Ottawa from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to Ottawa become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to Ottawa on Cheapflights with our Price Alert feature and get notified when better prices are available.

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