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Cheap flights from London Heathrow Airport to Ottawa from C$ 461

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
4 Sep — 11 Sep1
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 Wednesday

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 5 August 2026.

Tue 15/92:05 p.m. -
1 stop13h 05m
Tue 22/92:45 p.m. -
2 stops20h 50m
Deal found 31/7C$ 815
Thu 1/106:50 a.m. -
2 stops17h 05m
Tue 13/107:30 p.m. -
2 stops14h 10m
Deal found 3/8C$ 817
Wed 16/912:40 p.m. -
2 stops13h 04m
Wed 23/92:45 p.m. -
1 stop10h 45m
Deal found 2/8C$ 822
Thu 10/95:55 p.m. -
2 stops30h 04m
Thu 17/95:57 p.m. -
2 stops17h 28m
Deal found 1/8C$ 825
Mon 14/126:30 a.m. -
2 stops13h 30m
Tue 29/125:10 p.m. -
1 stop9h 45m
Deal found 3/8C$ 826
Sat 3/109:30 a.m. -
1 stop9h 24m
Tue 13/103:10 p.m. -
2 stops17h 30m
Deal found 3/8C$ 835
Thu 17/93:00 p.m. -
2 stops14h 20m
Thu 24/96:25 p.m. -
2 stops17h 10m
Deal found 3/8C$ 839
Thu 20/812:40 p.m. -
1 stop11h 13m
Wed 26/83:10 p.m. -
1 stop10h 20m
Deal found 5/8C$ 843
Thu 1/103:00 p.m. -
2 stops14h 20m
Tue 13/106:25 p.m. -
2 stops14h 25m
Deal found 4/8C$ 845
Mon 14/912:15 p.m. -
2 stops15h 20m
Mon 21/93:10 p.m. -
2 stops14h 30m
Deal found 31/7C$ 848
Fri 18/912:15 p.m. -
1 stop16h 39m
Fri 25/910:37 a.m. -
1 stop15h 08m
Deal found 4/8C$ 849
Mon 14/98:00 a.m. -
1 stop14h 16m
Thu 24/92:52 p.m. -
1 stop11h 03m
Deal found 1/8C$ 850

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 5 August 2026.

Round-trip from

C$ 815

One-way from

C$ 461

Popular in

December

Cheapest in

May

Average price

C$ 1,210

Good round-trip deal

C$ 773 or less

Good one-way deal

C$ 715 or less
SWISS
  • SWISS
  • 15/9-22/9
  • 3 total stops
  • 33h 55m total
  • London to Ottawa
Search Deals
4/9
  • 4/9
  • 2 total stops
  • 27h 15m total
  • London to Ottawa
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 196 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 5 August 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
Quickest round-trip

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Sat 19/9

8:00 a.m.-5:16 p.m.

1 stop14h 16m

Ottawa

Sat 26/9

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

1 stop10h 10m

C$ 849

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Fri 18/9

12:15 p.m.-11:54 p.m.

1 stop16h 39m

Ottawa

Fri 25/9

10:37 a.m.-6:45 a.m.

1 stop15h 08m

C$ 849

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Sun 16/8

6:50 a.m.-11:54 p.m.

2 stops22h 04m

Ottawa

Mon 21/9

6:00 a.m.-5:55 a.m.

2 stops18h 55m

C$ 921

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Tue 25/8

7:45 a.m.-11:54 p.m.

2 stops21h 09m

Ottawa

Fri 25/9

6:01 p.m.-10:25 a.m.

1 stop11h 24m

C$ 960

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Mon 7/9

6:55 a.m.-9:56 a.m.

2 stops32h 01m

Ottawa

Wed 7/10

6:05 a.m.-10:40 a.m.

2 stops23h 35m

C$ 964

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Mon 12/10

8:00 a.m.-5:16 p.m.

1 stop14h 16m

Ottawa

Fri 30/10

12:10 p.m.-6:20 a.m.

2 stops14h 10m

C$ 1,084

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Thu 27/8

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

2 stops14h 35m

Ottawa

Mon 31/8

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

2 stops12h 35m

C$ 1,134

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Sun 13/12

5:15 p.m.-5:58 p.m.

1 stop29h 43m

Ottawa

Tue 5/1

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

1 stop31h 10m

C$ 1,137

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Wed 16/12

4:35 p.m.-12:42 a.m.

2 stops37h 07m

Ottawa

Tue 5/1

5:40 a.m.-8:10 p.m.

2 stops33h 30m

C$ 1,154

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Tue 15/12

6:00 p.m.-3:07 p.m.

2 stops26h 07m

Ottawa

Tue 5/1

4:36 p.m.-5:55 a.m.

1 stop32h 19m

C$ 1,157

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 22 resultsSorted by cheapest first
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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$ 1,334). 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 5 August 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?

Airfare is below average for this route at the moment.

London Heathrow Airport to Ottawa flights typically cost between C$ 1,049 and C$ 1,397 in September.
The cheapest round-trip price found within the last 5 days was C$ 815 on Multiple Airlines (15 Sep-22 Sep).

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 5 August 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
11,428 reviews
Check prices

Entertainment

6.8

Food

6.3

Overall

7.1

Boarding

7.3

Crew

7.8

Comfort

7.1

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
11,428 reviews
Air Canada
7.1
Good
11,428 reviews
Check prices

Entertainment

6.8

Food

6.3

Overall

7.1

Boarding

7.3

Crew

7.8

Comfort

7.1

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 14h 16m. Fly via United Airlines, British Airways, or Delta 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$ 810, was found to be the cheapest airline from London Heathrow Airport to Ottawa.. Users have found that Air Canada 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 Air Canada (86%), Austrian Airlines (86%) and SriLankan Airlines (86%).

  • 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$ 1,070, our data indicates the cheapest price to be C$ 691. The most popular route (London Heathrow - Ottawa), is priced around C$ 721.

  • 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$ 1,334). 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
Prescott
Brockville
Wakefield
Pembroke
Smiths Falls

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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 5 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 810AverageC$ 1,023FlexibilityNo 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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