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Cheap flights from London Heathrow Airport to Ottawa from C$ 458

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
1 Jul — 8 Jul1
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 Monday and return on a Thursday

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 26 June 2025.

Round-trip from

C$ 804

One-way from

C$ 458

Popular in

August

Cheapest in

March

Average price

C$ 957

Good round-trip deal

C$ 1,389 or less

Good one-way deal

C$ 2,878 or less
Air France
  • Air France
  • 23/9-31/10
  • 2 total stops
  • 23h 25m total
  • London to Ottawa
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23/9
  • 23/9
  • 2 total stops
  • 36h 03m total
  • London to Ottawa
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Highest demand for flights based on searches. 16% potential increase in price (C$ 273 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 46 potential savings vs. average RT price).
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Average for round-trip flights in June 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 26 June 2025.

Tue 23/96:15 a.m.LHR - YOW
1 stop13h 45mAir France
Fri 31/106:20 p.m.YOW - LHR
1 stop9h 40mAir France
Deal found 25/6C$ 804
Wed 24/911:45 a.m.LHR - YOW
2 stops17h 37mMultiple Airlines
Fri 31/106:20 p.m.YOW - LHR
1 stop9h 40mMultiple Airlines
Deal found 25/6C$ 807
Tue 23/96:30 a.m.LHR - YOW
2 stops13h 30mKLM
Thu 30/106:20 p.m.YOW - LHR
2 stops12h 25mKLM
Deal found 25/6C$ 824
Thu 27/116:50 a.m.LHR - YOW
2 stops12h 13mBrussels Airlines
Mon 8/124:45 p.m.YOW - LHR
2 stops19h 20mBrussels Airlines
Deal found 25/6C$ 874
Thu 18/96:00 a.m.LHR - YOW
2 stops22h 04mSWISS
Sun 28/93:55 p.m.YOW - LHR
2 stops35h 00mSWISS
Deal found 25/6C$ 889
Sat 20/96:30 a.m.LHR - YOW
2 stops22h 49mLufthansa
Tue 28/104:45 p.m.YOW - LHR
1 stop10h 25mLufthansa
Deal found 25/6C$ 893
Thu 18/92:05 p.m.LHR - YOW
Nonstop7h 20mAir Canada
Sun 28/97:00 a.m.YOW - LHR
1 stop9h 00mAir Canada
Deal found 25/6C$ 898
Mon 22/96:00 a.m.LHR - YOW
2 stops23h 19mAustrian Airlines
Wed 29/104:10 p.m.YOW - LHR
2 stops25h 30mAustrian Airlines
Deal found 25/6C$ 1,025
Fri 27/67:45 a.m.LHR - YOW
2 stops16h 07mUnited Airlines
Mon 30/611:55 a.m.YOW - LHR
2 stops14h 00mUnited Airlines
Deal found 25/6C$ 1,046
Mon 4/88:10 p.m.LHR - YOW
2 stops33h 12mDelta
Sat 4/105:55 a.m.YOW - LHR
2 stops45h 55mDelta
Deal found 26/6C$ 1,138

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 26 June 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

Tue 23/9

6:15 a.m.-3:00 p.m.

1 stop13h 45m

Ottawa

Fri 31/10

6:20 p.m.-8:00 a.m.

1 stop9h 40m

C$ 804

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 24/9

11:45 a.m.-12:22 a.m.

2 stops17h 37m

Ottawa

Fri 31/10

6:20 p.m.-8:00 a.m.

1 stop9h 40m

C$ 807

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 23/9

6:30 a.m.-3:00 p.m.

2 stops13h 30m

Ottawa

Thu 30/10

6:20 p.m.-10:45 a.m.

2 stops12h 25m

C$ 824

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 27/11

6:50 a.m.-2:03 p.m.

2 stops12h 13m

Ottawa

Mon 8/12

4:45 p.m.-5:05 p.m.

2 stops19h 20m

C$ 874

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 18/9

6:00 a.m.-11:04 p.m.

2 stops22h 04m

Ottawa

Sun 28/9

3:55 p.m.-7:55 a.m.

2 stops35h 00m

C$ 889

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 20/9

6:30 a.m.-12:19 a.m.

2 stops22h 49m

Ottawa

Wed 29/10

4:45 p.m.-7:10 a.m.

1 stop10h 25m

C$ 893

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 18/9

2:05 p.m.-4:25 p.m.

Nonstop7h 20m

Ottawa

Sun 28/9

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

1 stop9h 00m

C$ 898

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 22/9

6:00 a.m.-12:19 a.m.

2 stops23h 19m

Ottawa

Tue 28/10

7:10 p.m.-9:40 p.m.

2 stops46h 30m

C$ 1,025

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 9/8

3:20 p.m.-10:05 p.m.

1 stop11h 45m

Ottawa

Sat 16/8

2:48 p.m.-7:15 a.m.

1 stop11h 27m

C$ 1,071

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 4/8

8:10 p.m.-12:22 a.m.

2 stops33h 12m

Ottawa

Sat 4/10

5:55 a.m.-8:50 a.m.

2 stops45h 55m

C$ 1,138

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/6

Showing 1-10 of 17 results
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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?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Ottawa. Price data was last updated on 20 June 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 26 June 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?

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 26 June 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Ottawa, such as Delta,KLM, andLOT. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,963 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
Delta
8.0
Very good
7,963 reviews
Delta
8.0
Very good
7,963 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
KLM
7.8
Good
1,365 reviews
Delta
8.0
Very good
7,963 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
LOT
7.6
Good
1,083 reviews
Delta
8.0
Very good
7,963 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
Austrian Airlines
7.6
Good
805 reviews
Delta
8.0
Very good
7,963 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
Air France
7.5
Good
1,470 reviews
Delta
8.0
Very good
7,963 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

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

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

    Air France, at C$ 804, was found to be the cheapest airline from London Heathrow Airport to Ottawa.Alternate airlines to your destination round-trip include KLM and Brussels Airlines. Users have found that Air France is 22% cheaper than the other options available to this destination.

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

    C$ 856 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Aer Lingus and Lufthansa, with prices starting from C$ 897 and C$ 947, respectively.

  • 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 (94%), Aegean Airlines (94%) and Austrian Airlines (94%).

  • 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$ 2,134, our data indicates the cheapest price to be C$ 981. The most popular route (London Heathrow - Ottawa), is priced around C$ 711.

  • 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Gatineau
Brockville
Perth
Smiths Falls
Prescott
Pembroke
Wakefield
Lanark

Browse thousands of different options on Cheapflights for your next trip

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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.
Heathrow to Pearson Intl flights
Gatwick to Pearson Intl flights
London City to Pearson Intl flights
Stansted to Pearson Intl flights
Luton to Pearson Intl flights
Heathrow to Pierre Elliott Trudeau Intl flights
Gatwick to Pierre Elliott Trudeau Intl flights
London City to Pierre Elliott Trudeau Intl flights
Southend to Pearson Intl flights
Luton to Pierre Elliott Trudeau Intl flights
Stansted to Pierre Elliott Trudeau Intl flights
Southend to Pierre Elliott Trudeau Intl flights
Gatwick to Ottawa flights
Heathrow to Hamilton flights
Heathrow to London flights
Stansted to Ottawa flights
Heathrow to Thunder Bay flights
Heathrow to Windsor 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 26 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapestC$ 728AverageC$ 955FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air CanadaCheapestC$ 824AverageC$ 1,041FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapestC$ 845AverageC$ 1,076FlexibilityNo 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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