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Cheap flights from London Heathrow Airport to Ottawa from C$ 400

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 28/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
12 Mar — 19 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Ottawa are usually found in April or June, booked 89 days in advance, depart on a Friday or Tuesday and return on a Tuesday

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 10 February 2026.

Tue 2/612:40 p.m.
LHR
-
YOW
1 stop10h 53m
Air Canada
Tue 30/610:00 a.m.
YOW
-
LHR
1 stop15h 35m
Air Canada
Deal found 9/2C$ 742
Wed 22/41:05 p.m.
LHR
-
YOW
2 stops16h 34m
Multiple Airlines
Wed 29/46:25 p.m.
YOW
-
LHR
2 stops20h 55m
Multiple Airlines
Deal found 9/2C$ 757
Sat 23/59:30 a.m.
LHR
-
YOW
1 stop11h 45m
Air Canada
Wed 27/55:30 p.m.
YOW
-
LHR
1 stop22h 30m
Air Canada
Deal found 7/2C$ 758
Sat 30/59:30 a.m.
LHR
-
YOW
1 stop16h 21m
Multiple Airlines
Fri 5/69:05 a.m.
YOW
-
LHR
1 stop16h 25m
Multiple Airlines
Deal found 8/2C$ 762
Sat 30/59:30 a.m.
LHR
-
YOW
1 stop17h 41m
Air Canada
Fri 5/610:00 a.m.
YOW
-
LHR
2 stops30h 00m
Air Canada
Deal found 7/2C$ 766
Tue 19/58:30 a.m.
LHR
-
YOW
1 stop15h 40m
Air Canada
Fri 29/56:00 a.m.
YOW
-
LHR
1 stop9h 40m
Air Canada
Deal found 8/2C$ 770
Fri 22/54:40 p.m.
LHR
-
YOW
1 stop12h 14m
Air Canada
Fri 29/56:00 a.m.
YOW
-
LHR
1 stop10h 35m
Air Canada
Deal found 8/2C$ 776
Fri 22/54:40 p.m.
LHR
-
YOW
1 stop12h 14m
United Airlines
Fri 29/56:00 a.m.
YOW
-
LHR
1 stop10h 35m
United Airlines
Deal found 8/2C$ 792

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 10 February 2026.

Round-trip from

C$ 742

One-way from

C$ 400

Popular in

August

Cheapest in

April

Average price

C$ 937

Good round-trip deal

C$ 884 or less

Good one-way deal

C$ 795 or less
Air Canada
  • Air Canada
  • 2/6-30/6
  • 2 total stops
  • 26h 28m total
  • London to Ottawa
Search Deals
28/5
  • 28/5
  • 2 total stops
  • 23h 00m total
  • London to Ottawa
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 172 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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

 
Customize 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 629,999 searches. Data last updated 10 February 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Ottawa that are best for you.

Fly from

Heathrow

Fly to

Ottawa

Route

Depart

Return

Price

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 12/3

12:15 p.m.-12:39 a.m.

2 stops16h 24m

Ottawa

Thu 19/3

5:40 a.m.-10:50 a.m.

2 stops25h 10m

C$ 758

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 23/5

11:05 a.m.-9:15 p.m.

2 stops15h 10m

Ottawa

Fri 29/5

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

1 stop10h 35m

C$ 803

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 10/3

6:00 a.m.-9:18 p.m.

2 stops19h 18m

Ottawa

Tue 17/3

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

1 stop11h 55m

C$ 878

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 29/6

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

Nonstop7h 55m

Ottawa

Thu 9/7

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

Nonstop6h 35m

C$ 881

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 29/6

6:55 a.m.-11:54 p.m.

2 stops21h 59m

Ottawa

Wed 8/7

6:00 a.m.-6:55 a.m.

2 stops19h 55m

C$ 882

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 12/3

6:20 a.m.-4:10 p.m.

1 stop13h 50m

Ottawa

Thu 19/3

6:20 p.m.-1:45 p.m.

1 stop15h 25m

C$ 889

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 12/3

9:00 a.m.-9:18 p.m.

2 stops16h 18m

Ottawa

Thu 19/3

12:15 p.m.-8:35 p.m.

1 stop28h 20m

C$ 893

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 29/6

6:55 a.m.-11:54 p.m.

2 stops21h 59m

Ottawa

Tue 7/7

12:00 p.m.-6:55 a.m.

2 stops13h 55m

C$ 893

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 10/3

9:00 a.m.-9:18 p.m.

2 stops16h 18m

Ottawa

Tue 17/3

12:00 p.m.-7:10 a.m.

2 stops15h 10m

C$ 903

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 22/4

3:20 p.m.-2:55 p.m.

1 stop28h 35m

Ottawa

Wed 6/5

6:25 p.m.-1:50 p.m.

2 stops14h 25m

C$ 945

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 20 results
1
2

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 round-trip 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?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Ottawa. Price data was last updated on 6 February 2026.

The price you pay for your flight from London Heathrow Airport to Ottawa may vary depending on when you book. For the best chance of a lower fare, look to book 89 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, July is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of C$ 557). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of C$ 696). 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 10 February 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.

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 10 February 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Ottawa, such as Air France,Air Canada, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air France
7.4
Good
1,531 reviews
Check prices

Boarding

7.4

Food

7.0

Comfort

7.3

Crew

8.1

Entertainment

7.0

Overall

7.4

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class
Air France
7.4
Good
1,531 reviews
Air France
7.4
Good
1,531 reviews
Check prices

Boarding

7.4

Food

7.0

Comfort

7.3

Crew

8.1

Entertainment

7.0

Overall

7.4

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class
Air Canada
7.1
Good
10,701 reviews
Air France
7.4
Good
1,531 reviews
Check prices

Boarding

7.4

Food

7.0

Comfort

7.3

Crew

8.1

Entertainment

7.0

Overall

7.4

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class
Lufthansa
6.8
Okay
7,777 reviews
Air France
7.4
Good
1,531 reviews
Check prices

Boarding

7.4

Food

7.0

Comfort

7.3

Crew

8.1

Entertainment

7.0

Overall

7.4

Reviews

1 / 20
6.0
Good

Jayesh,Jan 2026

CDG - NMI

Entertainment needs more good Bollywood movies - as this flight was going to Mumbai, India. The Aircraft was a OLD - Is service to India cannot be improved ? The aircraft from Newark to Paris was great n new aircraft BUT aircraft from Paris to Mumbai was very old and poor class

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?

    Located just 10.6 km from the city centre, Ottawa is the airport most travellers will use when flying to Ottawa from London Heathrow. Booking flights from London Heathrow to Ottawa (YOW) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 3 different airlines.

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

    There are many flights that can get you from London Heathrow Airport to Ottawa in 15h 10m. Fly via United Airlines or Austrian Airlines to get the fastest option. The distance from London Heathrow Airport to Ottawa is about 5343 km. This flight may include one or multiple stops.

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

    Air France, at C$ 784, was found to be the cheapest airline from London Heathrow Airport to Ottawa.Alternate airlines to your destination round-trip include Air Canada and Lufthansa. Users have found that Air France is 22% cheaper than the other options available to this destination.

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

    The top 3 most reliable airlines when flying from London Heathrow Airport to Ottawa are TAP AIR PORTUGAL (78%), Air Canada (75%) and Austrian Airlines (75%).

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

    Looking for the cheapest flight from London Heathrow Airport to Ottawa? While on average our users pay C$ 864, our data indicates the cheapest price to be C$ 795. The most popular route (London Heathrow - Ottawa), is priced around C$ 724.

  • 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 vacation 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, July is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of C$ 557). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of C$ 696). 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
Perth
Pembroke
Wakefield

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Heathrow to Ottawa

Discover the top 3 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 629,999 searches. Data last updated 10 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapestC$ 784AverageC$ 1,061FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air CanadaCheapestC$ 798AverageC$ 990FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapestC$ 841AverageC$ 1,071FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

When you search for this flight from Heathrow to Ottawa, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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?

Yes! Cheapflights helps users easily find flights from Heathrow to Ottawa with no change fees.

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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