This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YOW
30 Oct — 6 Nov1
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 September, 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.
Cheapest
Best
Direct
Last-minute
One-way
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 30 September 2026.
Thu 5/1113:00 -
1 stop31h 57m
Sat 7/1112:10 -
2 stops27h 50m
Deal found 28/9£379
Sat 31/1013:00 -
2 stops27h 17m
Mon 2/1110:50 -
2 stops29h 10m
Deal found 28/9£382
Fri 16/1009:40 -
Nonstop8h 00m
Tue 20/1010:40 -
2 stops18h 10m
Deal found 28/9£382
Mon 12/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
1 stop9h 30m
Deal found 25/9£388
Thu 24/1216:45 -
1 stop27h 15m
Tue 29/1217:10 -
1 stop10h 50m
Deal found 27/9£391
Sat 10/1009:30 -
1 stop9h 28m
Thu 15/1018:55 -
Nonstop6h 35m
Deal found 26/9£394
Thu 24/1216:45 -
1 stop27h 15m
Sat 9/117:10 -
1 stop10h 50m
Deal found 29/9£398
Wed 14/1014:05 -
1 stop10h 40m
Wed 21/1018:00 -
1 stop12h 50m
Deal found 25/9£404
Tue 20/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
1 stop19h 55m
Deal found 26/9£406
Mon 12/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
2 stops13h 40m
Deal found 25/9£411
Thu 22/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
2 stops13h 40m
Deal found 28/9£412
Fri 23/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
1 stop12h 05m
Deal found 25/9£413
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 30 September 2026.
Mon 12/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
1 stop9h 30m
Deal found 25/9£388
Mon 12/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
2 stops13h 40m
Deal found 25/9£411
Mon 12/1007:25 -
2 stops21h 29m
Thu 12/1106:00 -
2 stops23h 50m
Deal found 27/9£487
Fri 16/1009:40 -
Nonstop8h 00m
Sat 24/1010:00 -
1 stop19h 45m
Deal found 28/9£579
Mon 9/1108:35 -
2 stops16h 10m
Mon 16/1109:00 -
2 stops17h 50m
Deal found 25/9£863
Thu 15/1017:50 -
1 stop11h 30m
Wed 21/1017:10 -
1 stop15h 35m
Deal found 29/9£468
Tue 13/1007:30 -
2 stops19h 05m
Tue 20/1019:30 -
1 stop10h 10m
Deal found 28/9£543
Wed 14/1006:30 -
2 stops18h 30m
Sun 18/1020:55 -
2 stops12h 35m
Deal found 28/9£540
Sun 13/1210:00 -
1 stop10h 00m
Thu 7/117:10 -
1 stop10h 50m
Deal found 26/9£599
Mon 12/1006:50 -
2 stops17h 05m
Sun 25/1015:10 -
1 stop25h 25m
Deal found 28/9£544
Wed 9/1211:40 -
1 stop15h 35m
Thu 7/117:40 -
1 stop11h 05m
Deal found 25/9£628
Sat 26/1212:05 -
2 stops38h 51m
Sun 10/109:45 -
2 stops22h 15m
Deal found 26/9£570
Wed 14/1012:40 -
1 stop24h 25m
Sat 24/1010:00 -
1 stop19h 45m
Deal found 28/9£652
Thu 29/1016:20 -
2 stops33h 39m
Mon 2/1116:46 -
1 stop14h 14m
Deal found 29/9£573
Thu 15/1012:40 -
1 stop16h 45m
Tue 20/1007:00 -
1 stop22h 45m
Deal found 28/9£652
Wed 28/1016:20 -
2 stops24h 51m
Tue 3/1114:00 -
1 stop11h 40m
Deal found 27/9£573
Thu 12/1108:30 -
2 stops16h 15m
Thu 19/1109:00 -
2 stops18h 10m
Deal found 28/9£895
Sun 11/1011:35 -
1 stop11h 00m
Wed 21/1016:00 -
1 stop13h 45m
Deal found 28/9£673
Thu 17/1221:45 -
2 stops22h 15m
Sat 26/1217:10 -
2 stops24h 55m
Deal found 25/9£778
Wed 14/1012:40 -
1 stop12h 20m
Tue 20/1007:00 -
1 stop22h 45m
Deal found 28/9£677
Wed 14/1008:30 -
2 stops16h 30m
Thu 22/1020:55 -
2 stops12h 40m
Deal found 28/9£824
Mon 14/1211:40 -
1 stop11h 18m
Thu 7/113:45 -
1 stop15h 00m
Deal found 26/9£706
Mon 12/1008:30 -
2 stops20h 55m
Fri 13/1114:00 -
3 stops16h 30m
Deal found 27/9£834
Mon 14/1211:40 -
1 stop11h 18m
Wed 6/113:45 -
1 stop15h 00m
Deal found 25/9£726
Wed 14/1008:30 -
2 stops16h 30m
Wed 21/1016:00 -
2 stops12h 25m
Deal found 28/9£874
Fri 11/1211:40 -
1 stop11h 18m
Tue 5/113:45 -
1 stop15h 00m
Deal found 26/9£806
Thu 15/1006:30 -
2 stops13h 40m
Wed 21/1014:35 -
2 stops16h 25m
Deal found 25/9£907
Sun 25/1006:30 -
2 stops22h 14m
Sun 1/1114:00 -
2 stops12h 50m
Deal found 28/9£908
Mon 12/1008:30 -
2 stops16h 30m
Wed 21/1014:35 -
3 stops16h 35m
Deal found 28/9£961
Fri 23/1008:10 -
3 stops17h 40m
Fri 30/1018:10 -
3 stops17h 45m
Deal found 25/9£1,161
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 30 September 2026.
Thu 15/1009:30 -
Nonstop7h 55m
Wed 21/1021:00 -
Nonstop6h 35m
Deal found 27/9£469
Thu 15/1009:30 -
Nonstop7h 55m
Wed 21/1021:00 -
Nonstop6h 35m
Deal found 28/9£498
Thu 15/1009:30 -
Nonstop7h 55m
Wed 21/1021:00 -
Nonstop6h 35m
Deal found 29/9£515
Wed 14/1014:10 -
Nonstop7h 55m
Mon 19/1018:55 -
Nonstop6h 35m
Deal found 27/9£523
Wed 14/1014:10 -
Nonstop7h 55m
Thu 22/1018:55 -
Nonstop6h 35m
Deal found 28/9£527
Fri 16/1009:40 -
Nonstop8h 00m
Fri 23/1019:40 -
Nonstop7h 15m
Deal found 28/9£555
Last-minute flights from London to Ottawa
Discover last-minute flight deals from London to Ottawa. Data last updated 30 September 2026 and is based on user searches.
Fri 9/1009:30 -
1 stop9h 28m
Mon 12/1018:55 -
Nonstop6h 35m
Deal found 25/9£413
Sat 10/1009:30 -
1 stop9h 28m
Thu 15/1018:55 -
Nonstop6h 35m
Deal found 26/9£394
Mon 12/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
1 stop9h 30m
Deal found 25/9£388
Mon 12/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
2 stops13h 40m
Deal found 25/9£411
Wed 14/1014:05 -
1 stop10h 40m
Wed 21/1018:00 -
1 stop12h 50m
Deal found 25/9£404
Fri 16/1009:40 -
Nonstop8h 00m
Tue 20/1010:40 -
2 stops18h 10m
Deal found 28/9£382
Tue 20/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
1 stop19h 55m
Deal found 26/9£406
Tue 20/1017:00 -
1 stop27h 00m
Fri 30/1018:25 -
1 stop17h 20m
Deal found 26/9£505
Thu 22/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
2 stops13h 40m
Deal found 28/9£412
Thu 22/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
1 stop9h 30m
Deal found 29/9£414
Fri 23/1017:50 -
1 stop11h 30m
Fri 30/1018:25 -
1 stop12h 05m
Deal found 25/9£413
Sat 31/1013:00 -
2 stops27h 17m
Mon 2/1110:50 -
2 stops29h 10m
Deal found 28/9£382
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 30 September 2026.
Wed 18/1108:05 -
3 stops58h 07m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£295
Wed 25/1116:45 -
2 stops36h 16m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£297
Tue 24/1113:40 -
2 stops39h 21m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/9£298
Wed 25/1108:05 -
3 stops44h 56m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£300
Wed 18/1116:45 -
2 stops49h 27m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£302
Tue 1/1206:15 -
3 stops46h 46m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£302
Thu 19/1118:10 -
2 stops48h 02m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£303
Wed 25/1114:50 -
1 stop27h 22m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£314
Tue 24/1110:20 -
3 stops42h 41m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/9£320
Mon 30/1114:50 -
1 stop27h 22m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/9£326
Sun 29/1108:20 -
3 stops45h 24m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£326
Mon 30/1109:10 -
3 stops44h 34m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/9£327
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 30 September 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 7,457,451 searches. Data last updated 30 September 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
LGW London Gatwick - YOW Ottawa
LGWYOW
London Gatwick
Wed 25/11
16:45-00:01
2 stops36h 16m
Ottawa
Wed 31/12
00:00-06:00
Nonstop0h 00m
£297
LondonOttawa
STN London Stansted - YOW Ottawa
STNYOW
London Stansted
Tue 24/11
10:20-00:01
3 stops42h 41m
Ottawa
Wed 31/12
00:00-06:00
Nonstop0h 00m
£320
LondonOttawa
STN London Stansted - YOW Ottawa
STNYOW
London Stansted
Mon 30/11
09:10-00:44
3 stops44h 34m
Ottawa
Wed 31/12
00:00-06:00
Nonstop0h 00m
£327
LondonOttawa
STN London Stansted - YOW Ottawa
STNYOW
London Stansted
Sat 14/11
17:05-00:44
3 stops36h 39m
Ottawa
Wed 31/12
00:00-06:00
Nonstop0h 00m
£333
LondonOttawa
LGW London Gatwick - YOW Ottawa
LGWYOW
London Gatwick
Sat 14/11
11:40-00:44
1 stop18h 04m
Ottawa
Wed 31/12
00:00-06:00
Nonstop0h 00m
£342
LondonOttawa
LGW London Gatwick - YOW Ottawa
LGWYOW
London Gatwick
Tue 17/11
11:40-00:44
1 stop18h 04m
Ottawa
Wed 31/12
00:00-06:00
Nonstop0h 00m
£346
Fastest return journey
LondonOttawa
LGW London Gatwick - YOW Ottawa
LGWYOW
London Gatwick
Wed 25/11
10:00-15:00
1 stop10h 00m
Ottawa
Wed 31/12
00:00-06:00
Nonstop0h 00m
£348
LondonOttawa
STN London Stansted - YOW Ottawa
STNYOW
London Stansted
Thu 19/11
09:15-00:44
3 stops20h 29m
Ottawa
Wed 31/12
00:00-06:00
Nonstop0h 00m
£351
LondonOttawa
LHR London Heathrow - YOW Ottawa
LHRYOW
London Heathrow
Wed 25/11
14:50-22:15
2 stops36h 25m
Ottawa
Wed 31/12
00:00-06:00
Nonstop0h 00m
£352
LondonOttawa
STN London Stansted - YOW Ottawa
STNYOW
London Stansted
Sun 15/11
06:20-00:44
3 stops23h 24m
Ottawa
Wed 31/12
00:00-06:00
Nonstop0h 00m
£353
Flights are sorted by cheapest return flights first.
Deals found on 25/9
Showing 1-10 of 51 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
LHR-YOW
LGW-YOW
STN-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
LHR-YOW
LGW-YOW
STN-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 £448). Flying from London to Ottawa in December is currently the most expensive (average of £683). 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 30 September 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 £428 and £606 in November.The cheapest return price found within the last 5 days was £379 on Air Canada (5 Nov–7 Nov).
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 55% 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 £493.
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 59m.
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 192 minutes.
What is the most punctual flight time for London to Ottawa flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Tuesday 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 74 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 30 September 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 is 1 flight from London to Ottawa per day from 6 different airlines.
How long is the flight from London to Ottawa?
KLM and Air Transat can get you from London to Ottawa in just under 8h. Your travel time can differ by up to 3h 30m. 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 £345, 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 Air Transat. According to our data, you can fly for as low as £211. Users have also found prices from £295 and £482 on Virgin Atlantic and Lufthansa, 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 City - Ottawa or London Gatwick - Ottawa as they are the most popular.
What are the most reliable airlines from London to Ottawa?
Consider Aegean Airlines (88%), Air Canada (85%) or Austrian Airlines (85%) 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 £1,040, our data indicates the cheapest price to be £382. The most popular route (London Heathrow - Ottawa), is priced around £388.
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 £448). Flying from London to Ottawa in December is currently the most expensive (average of £683). 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
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.
Airlines
Alternative routes
Complete your trip
Direct flights to Ontario
Flights by cabin class
Other flight options
Other flights from London
Ottawa flight routes
Popular flights
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 30 September 2026.
Browse through other flights departing from London. Flights are based on user searches made on Cheapflights and were last updated on 30 September 2026.
Explore flights to Ottawa departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 September 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 7,457,451 searches. Data last updated 30 September 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.
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.