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 30/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YOW
16 Sep — 23 Sep1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Ottawa are usually found in June or May, booked 54 days in advance, depart on a Friday or Thursday and return on a Friday
Cheap flight deals from London to Ottawa
Enter your travel dates to find the best prices.
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Cheapest flights from London to Ottawa
Explore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 August 2026.
Fri 28/812:40 -
1 stop16h 45m
Sun 13/914:15 -
1 stop14h 35m
Deal found 12/8£437
Fri 4/922:00 -
2 stops24h 35m
Tue 22/916:00 -
1 stop13h 45m
Deal found 12/8£439
Mon 28/906:50 -
2 stops17h 05m
Mon 5/1019:30 -
2 stops14h 10m
Deal found 13/8£439
Fri 11/912:40 -
1 stop12h 20m
Fri 18/918:25 -
2 stops19h 30m
Deal found 14/8£440
Fri 25/1216:45 -
1 stop27h 15m
Wed 6/117:10 -
1 stop10h 50m
Deal found 12/8£440
Fri 4/917:50 -
1 stop11h 30m
Tue 22/917:25 -
1 stop9h 30m
Deal found 12/8£440
Tue 8/912:40 -
1 stop12h 20m
Tue 22/920:55 -
2 stops39h 10m
Deal found 14/8£442
Fri 4/912:40 -
1 stop13h 00m
Fri 9/1016:00 -
1 stop13h 45m
Deal found 13/8£442
Fri 4/922:00 -
2 stops24h 35m
Thu 17/916:00 -
1 stop10h 55m
Deal found 13/8£443
Mon 24/817:50 -
1 stop11h 30m
Mon 21/917:25 -
1 stop15h 20m
Deal found 14/8£444
Mon 26/1019:20 -
1 stop24h 40m
Sun 8/1117:10 -
1 stop12h 20m
Deal found 14/8£446
Sun 27/908:00 -
1 stop14h 16m
Sun 4/1019:30 -
1 stop10h 10m
Deal found 13/8£448
Best flights from London to Ottawa
Discover carefully curated flight deals from London to Ottawa that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 August 2026.
Thu 24/906:30 -
2 stops22h 50m
Tue 29/918:25 -
2 stops20h 35m
Deal found 14/8£462
Mon 28/906:30 -
2 stops13h 30m
Mon 5/1017:25 -
2 stops12h 20m
Deal found 14/8£473
Sat 6/211:40 -
1 stop11h 18m
Thu 25/217:40 -
1 stop11h 05m
Deal found 13/8£608
Fri 25/1212:00 -
1 stop14h 56m
Wed 6/109:45 -
2 stops18h 25m
Deal found 12/8£609
Sun 7/206:30 -
2 stops14h 18m
Wed 24/209:15 -
Nonstop6h 45m
Deal found 13/8£630
Thu 17/910:45 -
2 stops35h 50m
Mon 21/906:55 -
2 stops21h 30m
Deal found 16/8£686
Sat 12/1220:05 -
2 stops28h 25m
Sat 16/116:10 -
2 stops15h 50m
Deal found 16/8£691
Thu 10/913:00 -
2 stops16h 20m
Tue 15/910:00 -
2 stops23h 40m
Deal found 14/8£464
Fri 11/912:40 -
1 stop12h 20m
Sun 13/918:25 -
2 stops21h 30m
Deal found 16/8£482
Mon 14/914:45 -
2 stops14h 35m
Mon 21/917:25 -
2 stops12h 20m
Deal found 16/8£568
Thu 24/906:30 -
2 stops16h 05m
Thu 8/1018:25 -
2 stops23h 00m
Deal found 13/8£488
Sun 7/211:40 -
1 stop11h 18m
Thu 25/210:20 -
1 stop18h 25m
Deal found 13/8£608
Sat 13/218:00 -
2 stops25h 29m
Tue 23/206:00 -
1 stop19h 20m
Deal found 13/8£617
Thu 10/906:00 -
3 stops23h 20m
Tue 15/918:25 -
2 stops13h 50m
Deal found 14/8£489
Wed 30/906:30 -
2 stops16h 05m
Wed 7/1017:25 -
2 stops12h 20m
Deal found 16/8£601
Wed 10/211:40 -
1 stop15h 35m
Mon 22/217:40 -
1 stop11h 05m
Deal found 13/8£608
Fri 11/909:50 -
2 stops19h 30m
Sun 13/906:55 -
2 stops20h 10m
Deal found 16/8£497
Sat 13/211:40 -
1 stop11h 18m
Tue 23/210:20 -
1 stop18h 25m
Deal found 13/8£608
Tue 9/211:45 -
2 stops17h 57m
Tue 23/217:10 -
2 stops12h 35m
Deal found 13/8£612
Mon 26/1009:15 -
2 stops16h 35m
Sun 8/1116:10 -
2 stops15h 40m
Deal found 14/8£743
Tue 29/921:55 -
2 stops24h 40m
Tue 6/1018:25 -
2 stops23h 55m
Deal found 15/8£539
Tue 3/1109:15 -
2 stops14h 30m
Thu 12/1116:10 -
2 stops15h 40m
Deal found 14/8£838
Tue 1/914:45 -
2 stops14h 35m
Mon 7/917:10 -
1 stop9h 45m
Deal found 15/8£545
Tue 29/909:15 -
2 stops14h 55m
Tue 6/1014:00 -
2 stops17h 35m
Deal found 15/8£870
Sun 20/1206:30 -
2 stops13h 30m
Sun 27/1217:10 -
2 stops12h 35m
Deal found 14/8£791
Sun 13/908:10 -
3 stops21h 10m
Sun 20/914:15 -
1 stop14h 35m
Deal found 16/8£547
Tue 17/1109:15 -
2 stops14h 30m
Thu 3/1210:50 -
2 stops16h 50m
Deal found 15/8£881
Tue 8/908:10 -
2 stops21h 10m
Sun 20/918:25 -
2 stops22h 55m
Deal found 17/8£558
Fri 11/909:15 -
2 stops14h 55m
Sun 13/914:00 -
2 stops13h 40m
Deal found 16/8£883
Thu 3/917:00 -
3 stops29h 35m
Thu 10/906:55 -
2 stops34h 30m
Deal found 14/8£559
Direct flights from London to Ottawa
Explore direct flight options from London to Ottawa based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 August 2026.
Sat 26/914:10 -
Nonstop7h 55m
Sat 3/1021:00 -
Nonstop6h 35m
Deal found 12/8£451
Sat 3/1014:10 -
Nonstop7h 55m
Sat 10/1021:00 -
Nonstop6h 35m
Deal found 14/8£462
Sun 13/909:40 -
Nonstop8h 00m
Sun 20/919:40 -
Nonstop7h 15m
Deal found 16/8£468
Sat 12/914:10 -
Nonstop7h 55m
Sat 19/921:00 -
Nonstop6h 35m
Deal found 15/8£483
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£496
Thu 27/809:30 -
Nonstop7h 55m
Sat 12/921:00 -
Nonstop6h 35m
Deal found 12/8£502
Fri 28/809:40 -
Nonstop8h 00m
Fri 4/919:40 -
Nonstop7h 15m
Deal found 16/8£586
Last-minute flights from London to Ottawa
Discover last-minute flight deals from London to Ottawa. Data last updated 17 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
Fri 4/922:00 -
2 stops24h 35m
Tue 22/916:00 -
1 stop13h 45m
Deal found 12/8£439
Fri 4/917:50 -
1 stop11h 30m
Tue 22/917:25 -
1 stop9h 30m
Deal found 12/8£440
Fri 4/912:40 -
1 stop13h 00m
Fri 9/1016:00 -
1 stop13h 45m
Deal found 13/8£442
Fri 4/922:00 -
2 stops24h 35m
Thu 17/916:00 -
1 stop10h 55m
Deal found 13/8£443
Tue 8/912:40 -
1 stop12h 20m
Tue 22/920:55 -
2 stops39h 10m
Deal found 14/8£442
Tue 8/921:35 -
3 stops31h 45m
Sun 20/919:40 -
Nonstop7h 15m
Deal found 17/8£445
Wed 9/912:40 -
1 stop12h 20m
Wed 16/918:25 -
2 stops19h 00m
Deal found 13/8£448
Fri 11/912:40 -
1 stop12h 20m
Fri 18/918:25 -
2 stops19h 30m
Deal found 14/8£440
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
Wed 30/912:15 -
1 stop16h 39m
Wed 7/1019:30 -
1 stop10h 10m
Deal found 16/8£449
One-way flights from London to Ottawa
Search for one-way flight options from London to Ottawa. Find affordable one-way fares based on user searches. Data last updated 17 August 2026.
Sun 30/809:40 -
Nonstop8h 00m
Deal found 15/8£212
Wed 9/909:40 -
1 stop15h 20m
Deal found 13/8£213
Fri 28/809:40 -
Nonstop8h 00m
Deal found 15/8£215
Tue 25/811:35 -
1 stop11h 00m
Deal found 14/8£216
Fri 4/909:40 -
Nonstop8h 00m
Deal found 12/8£216
Wed 23/909:40 -
1 stop15h 20m
Deal found 14/8£217
Mon 21/909:40 -
1 stop19h 45m
Deal found 15/8£219
Mon 24/812:40 -
1 stop31h 15m
Deal found 14/8£219
Sun 23/809:40 -
Nonstop8h 00m
Deal found 15/8£222
Sun 20/911:35 -
1 stop11h 00m
Deal found 15/8£226
Fri 11/922:00 -
3 stops25h 15m
Deal found 14/8£230
Fri 4/922:00 -
2 stops27h 00m
Deal found 12/8£232
Find flight deals from London to Ottawa
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 17 August 2026.
Customise your flight search to find flights from London 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 17 August 2026.
Use the filters below to find and compare flights from London to Ottawa that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
LondonOttawa
STN London Stansted - YOW Ottawa
STNYOW
London Stansted
Thu 24/9
06:30-00:20
2 stops22h 50m
Ottawa
Tue 29/9
18:25-20:00
2 stops20h 35m
£462
LondonOttawa
LGW London Gatwick - YOW Ottawa
LGWYOW
London Gatwick
Thu 10/9
13:00-00:20
2 stops16h 20m
Ottawa
Tue 15/9
10:00-14:40
2 stops23h 40m
£464
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
LGW London Gatwick - YOW Ottawa
LGWYOW
London Gatwick
Fri 11/9
12:40-20:00
1 stop12h 20m
Ottawa
Sun 13/9
18:25-20:55
2 stops21h 30m
£482
LondonOttawa
STN London Stansted - YOW Ottawa
STNYOW
London Stansted
Thu 24/9
06:30-17:35
2 stops16h 05m
Ottawa
Thu 8/10
18:25-22:25
2 stops23h 00m
£488
LondonOttawa
STN London Stansted - YOW Ottawa
STNYOW
London Stansted
Thu 10/9
06:00-00:20
3 stops23h 20m
Ottawa
Tue 15/9
18:25-13:15
2 stops13h 50m
£489
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Fri 11/9
09:50-00:20
2 stops19h 30m
Ottawa
Sun 13/9
06:55-08:05
2 stops20h 10m
£497
LondonOttawa
STN London Stansted - YOW Ottawa
STNYOW
London Stansted
Tue 29/9
21:55-17:35
2 stops24h 40m
Ottawa
Tue 6/10
18:25-23:20
2 stops23h 55m
£539
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Tue 1/9
14:45-00:20
2 stops14h 35m
Ottawa
Mon 7/9
17:10-07:55
1 stop9h 45m
£545
LondonOttawa
LGW London Gatwick - YOW Ottawa
LGWYOW
London Gatwick
Sun 13/9
08:10-00:20
3 stops21h 10m
Ottawa
Sun 20/9
14:15-09:50
1 stop14h 35m
£547
Flights are sorted by cheapest return flights first.
Deals found on 15/8
Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6
Best time to book a flight from London to Ottawa
Have a flexible travel schedule? Discover the best time to fly to Ottawa from London with our price prediction graph.
LON-YOW
LGW-YOW
LHR-YOW
STN-YOW
SEN-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 to Ottawa
LON-YOW
LGW-YOW
LHR-YOW
STN-YOW
SEN-YOW
What is the cheapest month to book a flight from London to Ottawa?
Currently, June is the cheapest month in which you can book a flight from London to Ottawa (average of £438). Flying from London to Ottawa in December is currently the most expensive (average of £696). 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 LON to YOW?
Find hourly flight availability from London 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 17 August 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Ottawa as you normally would.
How much does it cost for a return flight from London to Ottawa?
Airfare is below average for this route at the moment.
London to Ottawa flights typically cost between £502 and £627 in September.The cheapest return price found within the last 5 days was £439 on Multiple Airlines (4 Sept–22 Sept).
What’s the top stopover airport for flights from London to Ottawa?
Share of one-stop return flights from London to Ottawa chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Paris (CDG) – chosen by Cheapflights users on 60% of one-stop itineraries from London to Ottawa on Cheapflights.
What’s the cheapest stopover airport for flights from London to Ottawa?
Average return fare for one-stop flights from London to Ottawa, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Paris (CDG) is the most affordable one-stop option, with an average return flight price of £465.
What’s the fastest stopover option from London to Ottawa?
Shortest average travel time for one-stop one-way flights from London 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: 9h 36m.
Which airport typically offers the quickest stopover for flights from London to Ottawa?
Average stopover duration for one-stop one-way flights from London to Ottawa, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Newark (EWR) offer the fastest connection on this route, with an average stopover time of 1h 17m.
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 201 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.
How far ahead should I book a flight from London to Ottawa?
To ensure you get the cheapest price possible for a flight from London to Ottawa, you should look to book at least 88 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 17 August 2026.
Check out reviews from past customers who have flown with Air Transat,Air France, andVirgin Atlantic from London to Ottawa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Related info for your journey
Find useful and relevant information for your journey from London 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?
If you book a flight to Ottawa from London, you will be flying to Ottawa, which is the city’s only airport. Ottawa (YOW) is located 6.6 mi from the center of Ottawa. There are 2 flights from London to Ottawa per day from 5 different airlines.
How long is the flight from London to Ottawa?
KLM, Air Transat, and SWISS can get you from London to Ottawa in just under 11h 18m. Your travel time can differ by up to 5h 17m. Airlines will cover a distance of 3340 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London to Ottawa round-trip?
Air Transat, at £337, was found to be the cheapest airline from London to Ottawa.Alternate airlines flying return to your destination include Air France and Air Canada. Users have found that Air Transat is 37% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from London to Ottawa one-way?
For one-way options, check prices for Virgin Atlantic. According to our data, you can fly for as low as £288. Users have also found prices from £471 and £565 on Lufthansa and Air Canada, respectively.
What are the most popular routes from London to Ottawa?
When deciding which route to take from London to Ottawa consider London Heathrow - Ottawa, London Gatwick - Ottawa or London City - Ottawa as they are the most popular.
What are the most reliable airlines from London to Ottawa?
Consider Air Canada (83%), Austrian Airlines (83%) or SriLankan Airlines (83%) when booking your flight. These represent the most reliable airlines when flying from London to Ottawa.
What are the cheapest flights from London to Ottawa?
Looking for the cheapest flight from London to Ottawa? While on average our users pay £1,712, our data indicates the cheapest price to be £424. The most popular route (London Heathrow - Ottawa), is priced around £381.
Can I find deals for business class flights from London to Ottawa?
Yes. Cheapflights offers flight deals from London 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 to Ottawa?
Currently, June is the cheapest month in which you can book a flight from London to Ottawa (average of £438). Flying from London to Ottawa in December is currently the most expensive (average of £696). 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.
Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Brockville
Smiths Falls
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Fly from London to Ottawa on these airlines
Choose from the following airlines for your flight from London to Ottawa. Flights are based on user searches made on Cheapflights and were last updated on 17 August 2026.
Explore flights to Ottawa departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 17 August 2026.
Discover the top 6 airlines that operate flights from London 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 17 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 London to Ottawa?
Cheapflights makes it easy to find London to Ottawa flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from London to Ottawa?
Cheapflights helps you find that perfect flight to Ottawa from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from London to Ottawa with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Ottawa flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from London to Ottawa become cheaper?
Not ready to book yet? You can track prices for flights from London to Ottawa on Cheapflights with our Price Alert feature and get notified when better prices are available.
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