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Cheap flights from London Heathrow Airport to Ottawa from £294

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 14/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
16 Jul — 23 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 Thursday or Monday and return on a Wednesday

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 11 July 2025.

Round-trip from

£456

One-way from

£294

Popular in

August

Cheapest in

March

Average price

£701

Good round-trip deal

£532 or less

Good one-way deal

£629 or less
KLM
  • KLM
  • 9/12-17/12
  • 4 total stops
  • 31h 35m total
  • London to Ottawa
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14/9
  • 14/9
  • 2 total stops
  • 28h 51m total
  • London to Ottawa
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£77 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
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Average for round-trip flights in July 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 11 July 2025.

Tue 9/1210:00LHR - YOW
2 stops19h 10mKLM
Wed 17/1217:20YOW - LHR
2 stops12h 25mKLM
Deal found 10/7£456
Mon 11/812:40LHR - YOW
1 stop15h 28mAir Canada
Mon 18/818:55YOW - LHR
Nonstop6h 35mAir Canada
Deal found 9/7£470
Wed 17/906:00LHR - YOW
2 stops23h 22mMultiple Airlines
Wed 24/905:55YOW - LHR
2 stops23h 25mMultiple Airlines
Deal found 10/7£489
Tue 15/707:45LHR - YOW
2 stops19h 20mUnited Airlines
Tue 22/709:50YOW - LHR
1 stop16h 05mUnited Airlines
Deal found 10/7£528
Tue 14/1006:50LHR - YOW
2 stops12h 01mBrussels Airlines
Thu 23/1018:40YOW - LHR
1 stop9h 55mBrussels Airlines
Deal found 9/7£534
Thu 17/706:15LHR - YOW
1 stop13h 50mAir France
Thu 24/717:15YOW - LHR
1 stop9h 45mAir France
Deal found 10/7£559

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 11 July 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 9/12

10:00-00:10

2 stops19h 10m

Ottawa

Wed 17/12

17:20-10:45

2 stops12h 25m

£456

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 11/8

12:40-23:08

1 stop15h 28m

Ottawa

Mon 18/8

18:55-06:30

Nonstop6h 35m

£470

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 17/9

06:00-00:22

2 stops23h 22m

Ottawa

Wed 24/9

05:55-10:20

2 stops23h 25m

£489

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 14/10

06:50-13:51

2 stops12h 01m

Ottawa

Thu 23/10

18:40-09:35

1 stop9h 55m

£534

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 8/12

07:40-23:08

2 stops20h 28m

Ottawa

Tue 23/12

16:00-07:10

1 stop10h 10m

£539

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 8/8

06:40-16:43

2 stops15h 03m

Ottawa

Wed 13/8

14:45-09:20

2 stops13h 35m

£557

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sun 14/9

15:05-14:56

2 stops28h 51m

£294

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sun 2/11

14:50-05:33

2 stops19h 43m

£419

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sun 14/9

09:50-00:19

2 stops19h 29m

£441

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 28/8

08:30-17:05

1 stop13h 35m

£487

Flights are sorted by cheapest return flights first.

Deals found on 9/7

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 return 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 return flight from Heathrow to Ottawa. Price data was last updated on 27 June 2025.

Booking 88 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Ottawa. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of £588). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of £875). 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 2025.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Ottawa in the evening. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from London Heathrow Airport to Ottawa?

Use this chart to determine the cheapest time to fly return from Heathrow to Ottawa. Price data was last updated on 6 July 2025.

Travellers seeking maximum savings on their London Heathrow Airport to Ottawa flight should consider departing on Monday evenings when fares are most often at their lowest. Wednesday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost for a return flight 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 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Ottawa, such as KLM, United Airlines, andBrussels Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,372 reviews
Check prices

Food

7.3

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,372 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Food

7.3

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
United Airlines
7.4
Good
8,846 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Food

7.3

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Brussels Airlines
7.3
Good
351 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Food

7.3

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
WestJet
7.2
Good
2,927 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Food

7.3

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Air Canada
7.1
Good
9,696 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Food

7.3

Overall

7.8

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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?

    Ottawa (YOW), located 6.6 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Ottawa. 6 airlines have flights to Ottawa from London Heathrow on a regular basis. Booking flights from London Heathrow to Ottawa should not be difficult; the airport handles an average of 4 inbound flights from London Heathrow per day.

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

    Our cheapest airline available from London Heathrow Airport to Ottawa is KLM. Our recent data shows that you can find tickets from as low as £456 on this airline. Additional options worth looking into are Air Canada and Brussels Airlines, starting at £470 and £534 round-trip. Users have found that KLM is 18% cheaper than the other options available to this destination.

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as £419. Users have also found prices from £441 and £487 on Aer Lingus and Lufthansa, respectively.

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

    Before booking your flight to Ottawa from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Air Canada (94%), Aegean Airlines (94%), Austrian Airlines( 94%).

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

    Looking at all options, your cheapest flight can be booked for £478. While the most popular route (London Heathrow - Ottawa) can be booked for £378 on average our data indicates £655 when flying from London Heathrow Airport to Ottawa.

  • Where are the most common stopover locations when flying from London Heathrow Airport to Ottawa?

    The most popular stopover on flights from London Heathrow Airport to Ottawa is Paris. Montreal is the second most popular location for stopovers on flights from London Heathrow Airport to Ottawa.

  • What are some popular things to do or see while on a stopover in Paris?

    The majority of Paris visitors spend their time at Eiffel Tower, Moulin Rouge, and Champs-Elysées. Travelers on a layover in Paris can visit Eiffel Tower, Moulin Rouge, and Champs-Elysées, by traveling 15.8 mi, 13.3 mi, and 14.7 mi, respectively after landing at Paris Charles de Gaulle. Travellers can book a car hire at Paris Charles de Gaulle for about £42 per day to make their sightseeing more efficient.

  • Where are the least popular stopover locations for London Heathrow Airport to Ottawa flights?

    The least popular stopover on flights from London Heathrow Airport to Ottawa is Toronto.

  • 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 holiday 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of £588). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of £875). 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
Smiths Falls

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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
Heathrow to Toronto Island flights
Stansted to Pearson Intl flights
Luton to Pearson Intl flights
Gatwick to Toronto Island 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
Gatwick to Ottawa flights
London City to Ottawa flights
Gatwick to London flights
Heathrow to Windsor flights
Stansted to Ottawa flights
Heathrow to London flights
London City to London flights
Heathrow to Thunder Bay flights
Stansted to London flights
Heathrow to Sarnia flights
Gatwick to Region of Waterloo Intl flights
London City to Thunder Bay flights
Gatwick to Thunder Bay flights
Heathrow to North Bay flights
Heathrow to Timmins flights

Top 6 airlines flying from Heathrow to Ottawa

Discover the top 6 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 858,174 searches. Data last updated 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£310Average£554FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£332Average£348FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£353Average£467FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£361Average£496FlexibilityNo cancel feeOn-time77%
Search Air France flights
Virgin AtlanticCheapest£373Average£444FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£445Average£556FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

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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?

Certainly. Search results for flights to Ottawa from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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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