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Cheap flights from London Heathrow Airport to Ottawa from C$ 495

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
18 Aug — 25 Aug1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Ottawa are usually found in March or April, booked 88 days in advance, depart on a Wednesday or Thursday and return on a Friday

Cheap 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 13 August 2025.

Round-trip from

C$ 900

One-way from

C$ 495

Popular in

August

Cheapest in

March

Average price

C$ 1,365

Good round-trip deal

C$ 742 or less

Good one-way deal

C$ 943 or less
KLM
  • KLM
  • 8/10-15/10
  • 3 total stops
  • 45h 32m total
  • London to Ottawa
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17/9
  • 17/9
  • 2 total stops
  • 21h 42m total
  • London to Ottawa
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Highest demand for flights based on searches. 13% potential increase in price (C$ 226 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 43 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from London Heathrow to Ottawa.
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Price to beat on a one-way flight from London Heathrow to Ottawa.
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Find flight deals from Heathrow to Ottawa

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 13 August 2025.

Wed 8/105:50 p.m.LHR - YOW
1 stop11h 32mKLM
Wed 15/105:55 a.m.YOW - LHR
2 stops34h 00mKLM
Deal found 11/8C$ 900
Tue 9/96:50 a.m.LHR - YOW
2 stops22h 32mMultiple Airlines
Tue 16/95:55 a.m.YOW - LHR
2 stops19h 35mMultiple Airlines
Deal found 11/8C$ 909
Mon 8/96:50 a.m.LHR - YOW
2 stops22h 32mMultiple Airlines
Mon 15/95:55 a.m.YOW - LHR
2 stops22h 40mMultiple Airlines
Deal found 11/8C$ 911
Thu 28/88:40 a.m.LHR - YOW
2 stops19h 28mMultiple Airlines
Thu 4/98:55 p.m.YOW - LHR
1 stop28h 35mMultiple Airlines
Deal found 12/8C$ 912
Wed 3/98:05 p.m.LHR - YOW
2 stops31h 59mMultiple Airlines
Sat 13/98:55 p.m.YOW - LHR
1 stop28h 35mMultiple Airlines
Deal found 13/8C$ 913
Wed 24/91:45 p.m.LHR - YOW
2 stops38h 19mMultiple Airlines
Wed 1/106:40 p.m.YOW - LHR
1 stop9h 55mMultiple Airlines
Deal found 13/8C$ 915
Tue 23/96:00 a.m.LHR - YOW
2 stops18h 04mMultiple Airlines
Tue 30/97:00 a.m.YOW - LHR
1 stop9h 00mMultiple Airlines
Deal found 13/8C$ 919
Tue 14/105:35 p.m.LHR - YOW
2 stops35h 47mAir France
Thu 23/105:15 p.m.YOW - LHR
1 stop12h 15mAir France
Deal found 12/8C$ 920
Fri 5/95:50 p.m.LHR - YOW
1 stop11h 32mMultiple Airlines
Mon 15/95:55 a.m.YOW - LHR
1 stop23h 45mMultiple Airlines
Deal found 11/8C$ 922
Thu 28/86:50 a.m.LHR - YOW
2 stops11h 54mMultiple Airlines
Fri 12/98:55 p.m.YOW - LHR
1 stop28h 35mMultiple Airlines
Deal found 12/8C$ 923
Mon 18/86:30 a.m.LHR - YOW
2 stops30h 58mMultiple Airlines
Mon 8/97:00 a.m.YOW - LHR
1 stop9h 00mMultiple Airlines
Deal found 13/8C$ 924
Tue 9/95:35 p.m.LHR - YOW
1 stop26h 25mMultiple Airlines
Thu 18/95:55 a.m.YOW - LHR
1 stop23h 45mMultiple Airlines
Deal found 11/8C$ 927

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 13 August 2025.
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

Wed 8/10

5:50 p.m.-12:22 a.m.

1 stop11h 32m

Ottawa

Wed 15/10

5:55 a.m.-8:55 p.m.

2 stops34h 00m

C$ 900

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 25/9

5:50 p.m.-12:22 a.m.

1 stop11h 32m

Ottawa

Thu 2/10

5:15 p.m.-8:00 a.m.

1 stop9h 45m

C$ 909

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 9/9

6:50 a.m.-12:22 a.m.

2 stops22h 32m

Ottawa

Tue 16/9

5:55 a.m.-6:30 a.m.

2 stops19h 35m

C$ 909

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 8/9

6:50 a.m.-12:22 a.m.

2 stops22h 32m

Ottawa

Mon 15/9

5:55 a.m.-9:35 a.m.

2 stops22h 40m

C$ 911

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 28/8

8:40 a.m.-11:08 p.m.

2 stops19h 28m

Ottawa

Thu 4/9

8:55 p.m.-6:30 a.m.

1 stop28h 35m

C$ 912

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 3/9

8:05 p.m.-11:04 p.m.

2 stops31h 59m

Ottawa

Sat 13/9

8:55 p.m.-6:30 a.m.

1 stop28h 35m

C$ 913

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 1/10

8:05 p.m.-11:04 p.m.

2 stops31h 59m

Ottawa

Wed 15/10

9:00 p.m.-8:35 a.m.

Nonstop6h 35m

C$ 915

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 24/9

1:45 p.m.-11:04 p.m.

2 stops38h 19m

Ottawa

Wed 1/10

6:40 p.m.-9:35 a.m.

1 stop9h 55m

C$ 915

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 10/9

8:05 p.m.-11:04 p.m.

2 stops31h 59m

Ottawa

Wed 17/9

9:00 p.m.-8:35 a.m.

Nonstop6h 35m

C$ 915

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 23/9

6:00 a.m.-7:04 p.m.

2 stops18h 04m

Ottawa

Tue 30/9

7:00 a.m.-9:00 p.m.

1 stop9h 00m

C$ 919

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/8

Showing 1-10 of 19 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 8 August 2025.

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 88 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, October is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of C$ 224). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of C$ 326). 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 13 August 2025.

It’s typically best to fly out from London Heathrow Airport to Ottawa in the morning. Doing so could potentially save you 13% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost to fly round-trip from London Heathrow Airport to Ottawa?

What’s the top layover airport for flights from London Heathrow Airport to Ottawa?

Share of one-stop round-trip flights from London Heathrow Airport to Ottawa chosen by Cheapflights users in the past 12 months, using the same layover each way.

Paris (CDG) – chosen by Cheapflights users on 80% of one-stop itineraries from London Heathrow Airport to Ottawa on Cheapflights.

What’s the cheapest layover airport for flights from London Heathrow Airport to Ottawa?

Average round-trip fare for 1-stop flights from London Heathrow Airport to Ottawa, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Paris (CDG) is the most affordable 1-stop option, with an average round-trip price of C$ 840.

What’s the fastest layover option from London Heathrow Airport to Ottawa?

Shortest average travel time for 1-stop one-way flights from London Heathrow Airport to Ottawa, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 9h 14m.

Which airport typically offers the quickest layover for flights from London Heathrow Airport to Ottawa?

Average layover duration for 1-stop one-way flights from London Heathrow Airport to Ottawa, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Montreal (YUL) offer the fastest connection on this route, with an average layover time of 1h 54m.

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 13 August 2025.
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
1,467 reviews
Check prices

Entertainment

7.0

Food

7.0

Boarding

7.4

Overall

7.4

Crew

8.1

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
Air France
7.4
Good
1,467 reviews
Air France
7.4
Good
1,467 reviews
Check prices

Entertainment

7.0

Food

7.0

Boarding

7.4

Overall

7.4

Crew

8.1

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
Air Canada
7.1
Good
9,943 reviews
Air France
7.4
Good
1,467 reviews
Check prices

Entertainment

7.0

Food

7.0

Boarding

7.4

Overall

7.4

Crew

8.1

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
Lufthansa
6.8
Okay
7,317 reviews
Air France
7.4
Good
1,467 reviews
Check prices

Entertainment

7.0

Food

7.0

Boarding

7.4

Overall

7.4

Crew

8.1

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.

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 2 daily inbound flights from London Heathrow from 3 different airlines.

  • What is the cheapest airline to fly from London Heathrow Airport to Ottawa round-trip?

    KLM, at C$ 900, was found to be the cheapest airline from London Heathrow Airport to Ottawa.. Users have found that KLM is 13% 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 (88%), Aegean Airlines (88%) and Austrian Airlines (88%).

  • 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$ 1,721, our data indicates the cheapest price to be C$ 734. The most popular route (London Heathrow - Ottawa), is priced around C$ 725.

  • 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, October is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of C$ 224). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of C$ 326). 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
Prescott
Pembroke
Wakefield

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Alternative routes for Heathrow to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
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Southend to Pearson Intl flights
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Gatwick to Ottawa flights
Southend to Pierre Elliott Trudeau Intl flights
Heathrow to London flights
Heathrow to Hamilton flights
Stansted to Ottawa flights
Heathrow to Windsor flights
Heathrow to Thunder Bay flights
Gatwick to Region of Waterloo Intl flights
Gatwick to Hamilton flights

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 13 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapestC$ 734AverageC$ 962FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air CanadaCheapestC$ 808AverageC$ 1,040FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapestC$ 852AverageC$ 1,002FlexibilityNo 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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