Cheap flights from London Heathrow Airport to Ottawa from £321

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 16/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
1 Feb — 8 Feb1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to Ottawa are usually found in March or April, booked 89 days in advance, depart on a Friday or Monday 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 2 January 2026.

Wed 28/109:00LHR - YOW
2 stops15h 18mMultiple Airlines
Wed 4/210:30YOW - LHR
2 stops15h 40mMultiple Airlines
Deal found 31/12£465
Mon 16/206:50LHR - YOW
2 stops15h 51mAir Canada
Mon 23/214:05YOW - LHR
2 stops25h 30mAir Canada
Deal found 2/1£468
Wed 25/209:00LHR - YOW
2 stops13h 41mAir Canada
Wed 4/310:30YOW - LHR
2 stops15h 40mAir Canada
Deal found 2/1£471
Wed 4/209:00LHR - YOW
2 stops13h 41mAir Canada
Sun 8/210:30YOW - LHR
2 stops15h 40mAir Canada
Deal found 31/12£472
Wed 28/109:00LHR - YOW
1 stop10h 21mAir Canada
Wed 4/210:30YOW - LHR
2 stops15h 40mAir Canada
Deal found 31/12£474
Thu 29/118:00LHR - YOW
1 stop11h 42mMultiple Airlines
Thu 5/205:40YOW - LHR
2 stops20h 30mMultiple Airlines
Deal found 31/12£475
Mon 1/609:30LHR - YOW
Nonstop7h 55mAir Canada
Thu 4/618:55YOW - LHR
Nonstop6h 35mAir Canada
Deal found 2/1£476
Wed 11/212:00LHR - YOW
Nonstop7h 30mAir Canada
Wed 18/210:30YOW - LHR
2 stops15h 40mAir Canada
Deal found 1/1£479
Wed 11/312:00LHR - YOW
Nonstop7h 30mAir Canada
Mon 16/310:20YOW - LHR
2 stops16h 50mAir Canada
Deal found 1/1£481

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 2 January 2026.

Round-trip from

£465

One-way from

£321

Popular in

August

Cheapest in

March

Average price

£563

Good round-trip deal

£505 or less

Good one-way deal

£804 or less
Air Canada
  • Air Canada
  • 28/1-4/2
  • 4 total stops
  • 30h 58m total
  • London to Ottawa
WestJet
  • WestJet
  • 16/2
  • 2 total stops
  • 38h 49m total
  • London to Ottawa
Highest demand for flights based on searches. 11% potential increase in price (£52 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Average for round-trip flights in January 2026
Price to beat on a round-trip flight from London Heathrow to Ottawa.
Price to beat on a one-way flight from London Heathrow to Ottawa.

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 2 January 2026.
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 4/2

09:00-17:41

2 stops13h 41m

Ottawa

Sun 8/2

10:30-07:10

2 stops15h 40m

£473

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 29/1

18:00-00:42

1 stop11h 42m

Ottawa

Thu 5/2

05:40-07:10

2 stops20h 30m

£475

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 11/2

09:00-14:21

1 stop10h 21m

Ottawa

Wed 18/2

10:30-07:10

2 stops15h 40m

£476

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 12/2

12:05-00:39

2 stops17h 34m

Ottawa

Fri 20/2

05:40-06:30

1 stop19h 50m

£476

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 12/2

13:00-21:18

1 stop13h 18m

Ottawa

Sat 21/2

19:50-07:10

1 stop30h 20m

£479

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 20/4

14:05-16:31

2 stops31h 26m

Ottawa

Sun 26/4

12:15-21:00

1 stop27h 45m

£495

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 13/3

13:25-08:18

2 stops22h 53m

Ottawa

Wed 18/3

22:55-09:20

Nonstop6h 25m

£503

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 12/2

07:30-21:18

2 stops18h 48m

Ottawa

Sat 21/2

06:00-06:40

2 stops19h 40m

£517

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 6/2

06:30-21:18

2 stops19h 48m

Ottawa

Mon 9/2

12:00-10:50

2 stops17h 50m

£517

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 16/2

14:50-00:39

2 stops38h 49m

£321

Flights are sorted by cheapest return flights first.

Deals found on 2/1

Showing 1-10 of 18 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 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 2 January 2026.

Booking 89 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, July is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of £304). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of £378). 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 2 January 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.

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 2 January 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Ottawa, such as Virgin Atlantic, Air France, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.3

Food

6.9

Overall

7.5

Boarding

7.7

Crew

8.2

Entertainment

7.6

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Comfort

7.3

Food

6.9

Overall

7.5

Boarding

7.7

Crew

8.2

Entertainment

7.6

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Comfort

7.3

Food

6.9

Overall

7.5

Boarding

7.7

Crew

8.2

Entertainment

7.6

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Comfort

7.3

Food

6.9

Overall

7.5

Boarding

7.7

Crew

8.2

Entertainment

7.6

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Comfort

7.3

Food

6.9

Overall

7.5

Boarding

7.7

Crew

8.2

Entertainment

7.6

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Comfort

7.3

Food

6.9

Overall

7.5

Boarding

7.7

Crew

8.2

Entertainment

7.6

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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 1 inbound flight from London Heathrow per day.

  • How long is the flight from London Heathrow Airport to Ottawa?

    Departing from London Heathrow Airport to Ottawa will take you 13h 41m. The distance between London Heathrow Airport and Ottawa is about 3320 mi.

  • 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 Air Canada. Our recent data shows that you can find tickets from as low as £310 on this airline. Additional options worth looking into are United Airlines and KLM, starting at £335 and £350 round-trip. Users have found that Air Canada is 43% 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 £276. Users have also found prices from £290 and £516 on Virgin Atlantic 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: TAP AIR PORTUGAL (83%), Air Canada (80%), Austrian Airlines( 80%).

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

    Looking at all options, your cheapest flight can be booked for £401. While the most popular route (London Heathrow - Ottawa) can be booked for £364 on average, our data indicates £2,411 when flying from London Heathrow Airport to Ottawa.

  • Where are the most common stopover locations when flying 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, Champs-Elysées, and Louvre Museum. Travelers on a layover in Paris can visit Eiffel Tower, Champs-Elysées, and Louvre Museum, by traveling 15.8 mi, 14.7 mi, and 14.3 mi, respectively after landing at Paris Charles de Gaulle. Travellers can book a car hire at Paris Charles de Gaulle for about £33 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a stopover in Montreal?

    If you're on a stopover in Montreal and looking for things to do, consider visiting Notre-Dame Basilica, Chapelle Notre-Dame-de-Bon-Secours, or Place des Arts. Notre-Dame Basilica, Chapelle Notre-Dame-de-Bon-Secours, and Place des Arts can be visited by travelling about 9.9 mi, 10.2 mi, and 9.5 mi respectively from Montreal Pierre Elliott Trudeau Intl. Travellers in need of a car in Montreal can hire one for about £39 per day.

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

  • 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, July is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of £304). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of £378). 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
Brockville
Smiths Falls

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 2 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£310Average£541FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£335Average£351FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£350Average£414FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£361Average£498FlexibilityNo cancel feeOn-time77%
Search Air France flights
Virgin AtlanticCheapest£368Average£442FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£449Average£529FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers 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?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ottawa from Heathrow today with Cheapflights!

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.