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Cheap flights from London Heathrow Airport to Ottawa from C$ 491

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
10 Aug — 17 Aug1
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 Monday or Tuesday and return on a Monday

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 11 July 2026.

Wed 16/97:30 p.m.
LHR
-
YOW
2 stops23h 24m
Multiple Airlines
Mon 28/97:30 p.m.
YOW
-
LHR
1 stop9h 30m
Multiple Airlines
Deal found 7/7C$ 763
Fri 18/98:30 a.m.
LHR
-
YOW
2 stops18h 40m
Lufthansa
Sat 26/99:00 p.m.
YOW
-
LHR
Nonstop6h 35m
Lufthansa
Deal found 7/7C$ 764
Mon 14/96:50 a.m.
LHR
-
YOW
2 stops18h 02m
Air Canada
Mon 28/96:55 p.m.
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 7/7C$ 766
Fri 11/98:30 a.m.
LHR
-
YOW
2 stops18h 40m
Lufthansa
Tue 15/92:35 p.m.
YOW
-
LHR
1 stop10h 55m
Lufthansa
Deal found 9/7C$ 770
Wed 16/96:50 a.m.
LHR
-
YOW
2 stops14h 48m
Air Canada
Wed 30/99:00 p.m.
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 7/7C$ 773
Thu 17/912:40 p.m.
LHR
-
YOW
1 stop11h 10m
Air Canada
Wed 30/99:00 p.m.
YOW
-
LHR
Nonstop6h 35m
Air Canada
Deal found 7/7C$ 776
Wed 16/92:10 p.m.
LHR
-
YOW
Nonstop7h 55m
Air Canada
Tue 29/97:30 p.m.
YOW
-
LHR
1 stop9h 30m
Air Canada
Deal found 7/7C$ 780
Tue 15/98:55 a.m.
LHR
-
YOW
1 stop11h 05m
Air France
Tue 29/95:25 p.m.
YOW
-
LHR
1 stop18h 10m
Air France
Deal found 7/7C$ 781

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 11 July 2026.

Round-trip from

C$ 763

One-way from

C$ 491

Popular in

December

Cheapest in

May

Average price

C$ 1,090

Good round-trip deal

C$ 779 or less

Good one-way deal

C$ 772 or less
Air Canada
  • Air Canada
  • 16/9-28/9
  • 3 total stops
  • 32h 54m total
  • London to Ottawa
Search Deals
15/9
  • 15/9
  • 3 total stops
  • 27h 45m total
  • London to Ottawa
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 184 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 July 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 11 July 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 round-trip

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 27/8

5:50 p.m.-12:20 a.m.

1 stop11h 30m

Ottawa

Mon 31/8

5:10 p.m.-7:55 a.m.

1 stop9h 45m

C$ 811

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 1/9

5:50 p.m.-12:20 a.m.

1 stop11h 30m

Ottawa

Mon 7/9

5:10 p.m.-10:45 a.m.

2 stops12h 35m

C$ 853

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 3/9

5:50 p.m.-12:20 a.m.

1 stop11h 30m

Ottawa

Thu 15/10

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

2 stops14h 25m

C$ 862

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 9/9

2:10 p.m.-5:05 p.m.

Nonstop7h 55m

Ottawa

Sun 13/9

12:15 p.m.-9:00 p.m.

1 stop27h 45m

C$ 989

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 13/10

2:45 p.m.-12:20 a.m.

2 stops14h 35m

Ottawa

Tue 20/10

5:10 p.m.-10:45 a.m.

2 stops12h 35m

C$ 996
Quickest round-trip

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 27/8

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

Nonstop7h 55m

Ottawa

Mon 31/8

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

Nonstop6h 35m

C$ 1,059

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 10/10

12:15 p.m.-6:55 p.m.

1 stop11h 40m

Ottawa

Wed 21/10

7:30 p.m.-10:40 a.m.

1 stop10h 10m

C$ 1,064

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sun 23/8

7:25 a.m.-6:55 p.m.

2 stops16h 30m

Ottawa

Sun 30/8

5:57 p.m.-10:25 a.m.

1 stop11h 28m

C$ 1,138

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 6/8

7:30 a.m.-6:48 p.m.

2 stops16h 18m

Ottawa

Thu 13/8

2:52 p.m.-9:20 a.m.

2 stops13h 28m

C$ 1,139

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 28/8

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

2 stops17h 00m

Ottawa

Sat 5/9

4:00 p.m.-10:40 a.m.

2 stops13h 40m

C$ 1,151

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/7

Showing 1-10 of 18 resultsSorted by cheapest first
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?

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 75 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of C$ 766). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of C$ 1,332). 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 11 July 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 to fly round-trip 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 11 July 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Ottawa, such as Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
11,327 reviews
Check prices

Comfort

7.1

Overall

7.1

Entertainment

6.8

Food

6.3

Boarding

7.3

Crew

7.8

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.
Air Canada
7.1
Good
11,327 reviews
Air Canada
7.1
Good
11,327 reviews
Check prices

Comfort

7.1

Overall

7.1

Entertainment

6.8

Food

6.3

Boarding

7.3

Crew

7.8

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.

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 is 1 daily inbound flight from London Heathrow from 1 airline.

  • 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 7h 55m. Fly via KLM or Air Canada 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 is the cheapest airline to fly from London Heathrow Airport to Ottawa round-trip?

    Air Canada, at C$ 790, was found to be the cheapest airline from London Heathrow Airport to Ottawa.. Users have found that Air Canada is 24% 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 Air Canada (91%), Austrian Airlines (91%) and SriLankan Airlines (91%).

  • 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$ 1,203, our data indicates the cheapest price to be C$ 695. The most popular route (London Heathrow - Ottawa), is priced around C$ 747.

  • 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of C$ 766). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of C$ 1,332). 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
Wakefield
Pembroke
Smiths Falls

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Heathrow to Ottawa

Discover the top airline 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 11 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 790AverageC$ 1,030FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

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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