Cheap flights from London Heathrow Airport to Ottawa from £240
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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
14 Sep — 21 Sep1
Return
1 adult
Economy
Return
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 Friday or Thursday and return on a Wednesday
Cheap flight deals from Heathrow to Ottawa
Enter your travel dates to find the best prices.
Cheapest
Best
Direct
Last-minute
One-way
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 15 August 2026.
Mon 28/906:50 -
2 stops17h 05m
Mon 5/1019:30 -
2 stops14h 10m
Deal found 13/8£439
Fri 4/917:50 -
1 stop11h 30m
Tue 22/917:25 -
1 stop9h 30m
Deal found 12/8£441
Sat 3/1006:50 -
2 stops14h 48m
Sat 3/1022:05 -
1 stop30h 30m
Deal found 11/8£443
Mon 24/817:50 -
1 stop11h 30m
Mon 21/917:25 -
1 stop15h 20m
Deal found 14/8£444
Sat 26/914:10 -
Nonstop7h 55m
Sat 3/1021:00 -
Nonstop6h 35m
Deal found 12/8£447
Sun 27/908:00 -
1 stop14h 16m
Sun 4/1019:30 -
1 stop10h 10m
Deal found 13/8£448
Sun 25/1011:45 -
2 stops16h 57m
Sun 1/1117:10 -
2 stops15h 40m
Deal found 14/8£453
Best flights from Heathrow to Ottawa
Discover carefully curated flight deals from Heathrow to Ottawa that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 August 2026.
Thu 24/911:05 -
1 stop15h 30m
Thu 1/1006:05 -
1 stop10h 15m
Deal found 10/8£448
Tue 25/814:45 -
2 stops14h 35m
Tue 22/917:25 -
2 stops12h 20m
Deal found 14/8£453
Wed 9/914:10 -
Nonstop7h 55m
Fri 25/914:45 -
1 stop10h 45m
Deal found 10/8£528
Tue 25/814:45 -
2 stops14h 35m
Thu 17/918:25 -
2 stops17h 10m
Deal found 14/8£561
Tue 25/817:50 -
1 stop28h 45m
Wed 16/906:55 -
2 stops42h 50m
Deal found 14/8£589
Mon 28/906:30 -
2 stops13h 30m
Mon 5/1017:25 -
2 stops12h 20m
Deal found 14/8£473
Tue 8/912:15 -
1 stop11h 40m
Mon 28/910:40 -
2 stops15h 35m
Deal found 10/8£507
Tue 25/817:50 -
1 stop28h 45m
Fri 25/906:55 -
2 stops42h 25m
Deal found 14/8£589
Tue 9/211:45 -
2 stops17h 57m
Tue 23/217:10 -
1 stop9h 45m
Deal found 13/8£590
Tue 25/812:50 -
2 stops16h 30m
Tue 15/906:55 -
2 stops19h 20m
Deal found 14/8£607
Tue 25/811:45 -
2 stops17h 35m
Mon 21/906:55 -
2 stops18h 50m
Deal found 14/8£607
Fri 25/1209:05 -
2 stops20h 37m
Thu 7/105:40 -
2 stops19h 40m
Deal found 10/8£607
Direct flights from Heathrow to Ottawa
Explore direct flight options from Heathrow to Ottawa based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 August 2026.
Sat 26/914:10 -
Nonstop7h 55m
Sat 3/1021:00 -
Nonstop6h 35m
Deal found 12/8£447
Sat 3/1014:10 -
Nonstop7h 55m
Sat 10/1021:00 -
Nonstop6h 35m
Deal found 14/8£463
Sat 12/914:10 -
Nonstop7h 55m
Wed 23/921:00 -
Nonstop6h 35m
Deal found 11/8£492
Wed 23/914:10 -
Nonstop7h 55m
Sat 17/1021:00 -
Nonstop6h 35m
Deal found 14/8£496
Wed 9/914:10 -
Nonstop7h 55m
Wed 16/921:00 -
Nonstop6h 35m
Deal found 13/8£497
Thu 27/809:30 -
Nonstop7h 55m
Sat 12/921:00 -
Nonstop6h 35m
Deal found 12/8£503
Wed 9/914:10 -
Nonstop7h 55m
Wed 16/921:00 -
Nonstop6h 35m
Deal found 12/8£506
Last-minute flights from Heathrow to Ottawa
Discover last-minute flight deals from Heathrow to Ottawa. Data last updated 15 August 2026 and is based on user searches.
Mon 24/817:50 -
1 stop11h 30m
Tue 22/917:25 -
1 stop12h 05m
Deal found 14/8£444
Mon 24/814:45 -
2 stops14h 35m
Tue 22/917:25 -
2 stops12h 20m
Deal found 14/8£453
Fri 4/917:50 -
1 stop11h 30m
Tue 22/917:25 -
1 stop9h 30m
Deal found 12/8£441
Sat 26/914:10 -
Nonstop7h 55m
Sat 3/1021:00 -
Nonstop6h 35m
Deal found 12/8£447
Sun 27/908:00 -
1 stop14h 16m
Sun 4/1019:30 -
1 stop10h 10m
Deal found 13/8£448
Mon 28/906:50 -
2 stops17h 05m
Mon 5/1019:30 -
2 stops14h 10m
Deal found 13/8£439
One-way flights from Heathrow to Ottawa
Search for one-way flight options from Heathrow to Ottawa. Find affordable one-way fares based on user searches. Data last updated 15 August 2026.
Mon 21/918:45 -
2 stops28h 30m
Deal found 11/8£240
Mon 14/920:50 -
3 stops32h 30m
Deal found 14/8£282
Wed 9/920:50 -
3 stops49h 45m
Deal found 14/8£283
Fri 4/920:00 -
2 stops27h 15m
Deal found 12/8£288
Wed 23/920:00 -
3 stops33h 20m
Deal found 14/8£294
Thu 17/920:50 -
2 stops26h 25m
Deal found 11/8£296
Fri 11/920:50 -
3 stops26h 25m
Deal found 14/8£307
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 15 August 2026.
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 15 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 return flight
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Thu 24/9
11:05-21:35
1 stop15h 30m
Ottawa
Thu 1/10
06:05-21:20
1 stop10h 15m
£448
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Tue 25/8
14:45-00:20
2 stops14h 35m
Ottawa
Tue 22/9
17:25-10:45
2 stops12h 20m
£453
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Mon 28/9
06:30-15:00
2 stops13h 30m
Ottawa
Mon 5/10
17:25-10:45
2 stops12h 20m
£473
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Tue 8/9
12:15-18:55
1 stop11h 40m
Ottawa
Mon 28/9
10:40-07:15
2 stops15h 35m
£507
Fastest return journey
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Wed 9/9
14:10-17:05
Nonstop7h 55m
Ottawa
Fri 25/9
14:45-06:30
1 stop10h 45m
£528
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Tue 25/8
14:45-00:20
2 stops14h 35m
Ottawa
Thu 17/9
18:25-16:35
2 stops17h 10m
£561
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Tue 25/8
17:50-17:35
1 stop28h 45m
Ottawa
Wed 16/9
06:55-06:45
2 stops42h 50m
£589
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Tue 25/8
17:50-17:35
1 stop28h 45m
Ottawa
Fri 25/9
06:55-06:20
2 stops42h 25m
£589
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Tue 9/2
11:45-00:42
2 stops17h 57m
Ottawa
Tue 23/2
17:10-07:55
1 stop9h 45m
£590
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Tue 25/8
12:50-00:20
2 stops16h 30m
Ottawa
Tue 15/9
06:55-07:15
2 stops19h 20m
£607
Flights are sorted by cheapest return flights first.
Deals found on 10/8
Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3
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.
LHR-YOW
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
Prices
Delays
More
How far ahead should I book a flight from London Heathrow Airport to Ottawa?
Booking 75 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Ottawa (average of £403). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of £714). 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 15 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 for a return flight 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 £526 and £677 in September.The cheapest return price found within the last 5 days was £439 on Lufthansa (28 Sept–5 Oct).
How often are flights from London to Ottawa delayed?
About 11% of weekly flights between London and Ottawa have experienced delays in the past year, with the average delay time being 212 minutes.
What is the most punctual flight time for London to Ottawa flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Thursday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to Ottawa flights?
Over the past year, Air Canada have had the lowest number of delays on this route, with just 11% of flights being delayed.
What’s the top stopover airport for flights from London Heathrow Airport to Ottawa?
Share of one-stop return flights from London Heathrow Airport to Ottawa chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Paris (CDG) – chosen by Cheapflights users on 70% of one-stop itineraries from London Heathrow Airport to Ottawa on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to Ottawa?
Average return fare for one-stop flights from London Heathrow Airport to Ottawa, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Montreal (YUL) is the most affordable one-stop option, with an average return flight price of £620.
What’s the fastest stopover option from London Heathrow Airport to Ottawa?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Ottawa, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Montreal (YUL) have the shortest average one-way travel time for one-stop routes: 10h 01m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Ottawa?
Average stopover duration for one-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 stopover time of 1h 55m.
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 15 August 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Ottawa, such as Air France,Virgin Atlantic, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
The crew was very friendly and one even suggested i look outside the window so I can see the Swiss Alps! I was not expecting food on our 2.5hour flight - sample of 3 kinds of sandwiches (super soft bread) and 2 mini apple filled donuts that was so good. Air france is my new favorite airline!
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. 4 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 3 inbound flights 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 7h 55m. The distance between London Heathrow Airport and Ottawa is about 3320 mi. This flight may include one or multiple stops.
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 Virgin Atlantic. Our recent data shows that you can find tickets from as low as £361 on this airline. Additional options worth looking into are Air France and Air Canada, starting at £365 and £369 round-trip. Users have found that Virgin Atlantic is 34% 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 Virgin Atlantic. According to our data, you can fly for as low as £289. Users have also found prices from £471 and £566 on Lufthansa and Air Canada, 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 (86%), Austrian Airlines (86%), SriLankan Airlines( 86%).
What are the cheapest flights from London Heathrow Airport to Ottawa?
Looking at all options, your cheapest flight can be booked for £443. While the most popular route (London Heathrow - Ottawa) can be booked for £382 on average, our data indicates £518 when flying from London Heathrow Airport 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 £403). Flying from London Heathrow Airport to Ottawa in December is currently the most expensive (average of £714). 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.
Explore flights to Ottawa departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 15 August 2026.
Discover the top 4 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 15 August 2026.
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.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.