Cheap flights from Ottawa to London Heathrow Airport from £204
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/11. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
27 Oct — 3 Nov1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in September or January, booked 54 days in advance, depart on a Wednesday or Thursday and return on a Friday
Cheap flight deals from Ottawa to Heathrow
Enter your travel dates to find the best prices.
Cheapest
Best
Direct
Last-minute
One-way
Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 September 2026.
Wed 30/921:00 -
Nonstop6h 35m
Wed 7/1008:40 -
2 stops29h 39m
Deal found 22/9£469
Wed 14/1021:00 -
Nonstop6h 35m
Thu 22/1006:00 -
2 stops21h 10m
Deal found 22/9£470
Sun 11/1017:50 -
1 stop11h 10m
Wed 14/1008:40 -
2 stops18h 30m
Deal found 22/9£471
Fri 16/1011:15 -
1 stop14h 15m
Thu 22/1006:00 -
2 stops21h 10m
Deal found 23/9£472
Mon 12/1012:15 -
2 stops16h 45m
Thu 22/1006:00 -
2 stops21h 10m
Deal found 22/9£473
Mon 5/1018:55 -
Nonstop6h 35m
Wed 14/1012:40 -
1 stop11h 10m
Deal found 23/9£473
Mon 5/1019:30 -
2 stops20h 30m
Wed 14/1012:40 -
1 stop11h 10m
Deal found 22/9£476
Wed 30/909:05 -
1 stop16h 25m
Wed 7/1014:10 -
Nonstop7h 55m
Deal found 22/9£476
Mon 5/1018:55 -
Nonstop6h 35m
Wed 14/1014:10 -
Nonstop7h 55m
Deal found 26/9£478
Sun 27/911:10 -
1 stop14h 20m
Fri 2/1014:05 -
1 stop11h 43m
Deal found 22/9£479
Best flights from Ottawa to Heathrow
Discover carefully curated flight deals from Ottawa to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 September 2026.
Wed 7/1021:00 -
Nonstop6h 35m
Wed 21/1014:10 -
Nonstop7h 55m
Deal found 24/9£480
Mon 12/1017:10 -
1 stop15h 35m
Tue 27/1006:20 -
1 stop13h 40m
Deal found 26/9£499
Sun 11/1006:00 -
2 stops18h 55m
Wed 21/1015:20 -
1 stop12h 15m
Deal found 22/9£522
Fri 6/1117:10 -
2 stops13h 55m
Sun 6/1206:20 -
1 stop13h 40m
Deal found 26/9£536
Wed 11/1117:10 -
2 stops12h 35m
Tue 17/1111:45 -
2 stops17h 59m
Deal found 25/9£561
Wed 18/1117:10 -
1 stop9h 45m
Thu 26/1119:20 -
1 stop24h 40m
Deal found 26/9£509
Fri 6/1117:10 -
2 stops13h 55m
Fri 13/1108:55 -
1 stop11h 05m
Deal found 25/9£537
Fri 16/1006:25 -
2 stops18h 30m
Fri 30/1018:00 -
2 stops24h 29m
Deal found 23/9£545
Mon 18/117:10 -
1 stop18h 25m
Fri 22/106:20 -
1 stop13h 40m
Deal found 22/9£509
Fri 6/1117:10 -
2 stops13h 55m
Sun 6/1206:30 -
2 stops13h 30m
Deal found 24/9£562
Wed 21/1017:10 -
2 stops15h 40m
Tue 10/1111:45 -
2 stops17h 59m
Deal found 27/9£562
Fri 4/1217:15 -
1 stop9h 40m
Sun 6/1208:55 -
1 stop11h 05m
Deal found 26/9£561
Direct flights from Ottawa to Heathrow
Explore direct flight options from Ottawa to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 27 September 2026.
Wed 7/1021:00 -
Nonstop6h 35m
Wed 21/1014:10 -
Nonstop7h 55m
Deal found 26/9£478
Mon 12/1018:55 -
Nonstop6h 35m
Thu 22/1009:30 -
Nonstop7h 55m
Deal found 24/9£479
Sat 10/1021:00 -
Nonstop6h 35m
Wed 21/1014:10 -
Nonstop7h 55m
Deal found 22/9£482
Sat 10/1021:00 -
Nonstop6h 35m
Mon 19/1009:30 -
Nonstop7h 55m
Deal found 24/9£486
Wed 7/1021:00 -
Nonstop6h 35m
Mon 12/1009:30 -
Nonstop7h 55m
Deal found 26/9£536
Sat 10/1021:00 -
Nonstop6h 35m
Thu 22/1009:30 -
Nonstop7h 55m
Deal found 26/9£556
Thu 8/1018:55 -
Nonstop6h 35m
Mon 19/1009:30 -
Nonstop7h 55m
Deal found 24/9£557
Thu 8/1018:55 -
Nonstop6h 35m
Mon 19/1009:30 -
Nonstop7h 55m
Deal found 23/9£560
Sat 10/1021:00 -
Nonstop6h 35m
Mon 26/1011:10 -
Nonstop7h 55m
Deal found 22/9£568
Sat 10/1021:00 -
Nonstop6h 35m
Sat 24/1014:10 -
Nonstop7h 55m
Deal found 22/9£575
Thu 8/1018:55 -
Nonstop6h 35m
Mon 12/1009:30 -
Nonstop7h 55m
Deal found 23/9£621
Last-minute flights from Ottawa to Heathrow
Discover last-minute flight deals from Ottawa to Heathrow. Data last updated 27 September 2026 and is based on user searches.
Sun 27/911:10 -
1 stop14h 20m
Fri 2/1014:05 -
1 stop11h 43m
Deal found 22/9£479
Wed 30/921:00 -
Nonstop6h 35m
Wed 7/1008:40 -
2 stops29h 39m
Deal found 22/9£469
Wed 30/909:05 -
1 stop16h 25m
Wed 7/1014:10 -
Nonstop7h 55m
Deal found 22/9£476
Mon 5/1018:55 -
Nonstop6h 35m
Wed 14/1012:40 -
1 stop11h 10m
Deal found 23/9£473
Mon 5/1019:30 -
2 stops20h 30m
Wed 14/1012:40 -
1 stop11h 10m
Deal found 22/9£476
Mon 5/1018:55 -
Nonstop6h 35m
Wed 14/1014:10 -
Nonstop7h 55m
Deal found 26/9£478
Sun 11/1017:50 -
1 stop11h 10m
Wed 14/1008:40 -
2 stops18h 30m
Deal found 22/9£471
Mon 12/1012:15 -
2 stops16h 45m
Thu 22/1006:00 -
2 stops21h 10m
Deal found 22/9£473
Wed 14/1021:00 -
Nonstop6h 35m
Thu 22/1006:00 -
2 stops21h 10m
Deal found 22/9£470
Fri 16/1011:15 -
1 stop14h 15m
Thu 22/1006:00 -
2 stops21h 10m
Deal found 23/9£472
One-way flights from Ottawa to Heathrow
Search for one-way flight options from Ottawa to Heathrow. Find affordable one-way fares based on user searches. Data last updated 27 September 2026.
Sun 29/1106:10 -
1 stop25h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 24/9£204
Mon 9/1106:10 -
1 stop25h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£208
Tue 24/1116:15 -
1 stop15h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£209
Tue 1/1216:15 -
1 stop15h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/9£211
Sat 7/1118:55 -
1 stop36h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 23/9£211
Wed 25/1118:55 -
1 stop36h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£216
Tue 24/1107:00 -
2 stops24h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£218
Thu 19/1107:00 -
2 stops24h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£219
Mon 9/1107:00 -
2 stops24h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£220
Sun 29/1107:00 -
2 stops24h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 24/9£220
Sun 8/1117:40 -
2 stops38h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 24/9£221
Wed 20/116:15 -
1 stop15h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/9£223
Find flight deals from Ottawa to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Heathrow (LHR). 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 27 September 2026.
Customise your flight search to find flights from Ottawa to Heathrow 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 27 September 2026.
Use the filters below to find and compare flights from Ottawa to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 9/11
06:10-12:50
1 stop25h 40m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£208
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 26/10
06:10-12:50
1 stop26h 40m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£282
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Wed 21/10
16:00-15:35
2 stops18h 35m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£300
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Sat 7/11
17:40-12:40
2 stops38h 00m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£303
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Fri 23/10
16:15-12:05
1 stop14h 50m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£319
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Thu 5/11
10:05-08:05
2 stops17h 00m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£356
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Fri 16/10
16:00-10:15
1 stop13h 15m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£374
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Fri 26/3
17:40-10:30
1 stop12h 50m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£383
Fastest return journey
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Sat 13/3
13:45-06:15
1 stop11h 30m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£383
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Wed 7/10
21:00-08:35
Nonstop6h 35m
London Heathrow
Wed 21/10
14:10-17:05
Nonstop7h 55m
£480
Flights are sorted by cheapest return flights first.
Deals found on 25/9
Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3
Best time to book a flight from Ottawa to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ottawa with our price prediction graph.
YOW-LHR
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 Ottawa to London Heathrow Airport
Prices
Delays
More
How far ahead should I book a flight from Ottawa to London Heathrow Airport?
Booking 53 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to London Heathrow Airport. 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 Ottawa to London Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of £530). Flying from Ottawa to London Heathrow Airport in December is currently the most expensive (average of £799). 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 YOW to LHR?
Find hourly flight availability from Ottawa to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 September 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ottawa to London Heathrow Airport as you normally would.
How much does it cost for a return flight from Ottawa to London Heathrow Airport?
Airfare is below average for this route at the moment.
Ottawa to London Heathrow Airport flights typically cost between £522 and £651 in October.The cheapest return price found within the last 5 days was £469 on Multiple Airlines (15 Oct–21 Oct).
How often are flights from Ottawa to London delayed?
About 32% of weekly flights between Ottawa and London have experienced delays in the past year, with the average delay time being 142 minutes.
What is the most punctual flight time for Ottawa to London flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Ottawa to London flights?
Over the past year, Air Canada have had the lowest number of delays on this route, with just 32% of flights being delayed.
What’s the top stopover airport for flights from Ottawa to London Heathrow Airport?
Share of one-stop return flights from Ottawa to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Toronto (YYZ) – chosen by Cheapflights users on 75% of one-stop itineraries from Ottawa to London Heathrow Airport on Cheapflights.
What’s the cheapest stopover airport for flights from Ottawa to London Heathrow Airport?
Average return fare for one-stop flights from Ottawa to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Toronto (YYZ) is the most affordable one-stop option, with an average return flight price of £801.
What’s the fastest stopover option from Ottawa to London Heathrow Airport?
Shortest average travel time for one-stop one-way flights from Ottawa to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Paris (CDG) have the shortest average one-way travel time for one-stop routes: 9h 45m.
Which airport typically offers the quickest stopover for flights from Ottawa to London Heathrow Airport?
Average stopover duration for one-stop one-way flights from Ottawa to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Toronto (YYZ) offer the fastest connection on this route, with an average stopover time of 1h 56m.
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 27 September 2026.
Read reviews from past customers who have flown with Air Canada
from Ottawa to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Our flight from Kelowna was 5 hours delayed. We missed our connection. We were able to get to a hotel by 3:00 a.m. but the breakfast cost us $40. The hotel was good. We were rescheduled for the flight the next night when it was canceled. There were no hotel vouchers available which didn't matter because there were no hotel rooms available. We decided to just drive which was not easy doing a one-way rental to the United States. Worst possible trip I've ever had
Our flight from Kelowna was 5 hours delayed. We missed our connection. We were able to get to a hotel by 3:00 a.m. but the breakfast cost us $40. The hotel was good. We were rescheduled for the flight the next night when it was canceled. There were no hotel vouchers available which didn't matter because there were no hotel rooms available. We decided to just drive which was not easy doing a one-way rental to the United States. Worst possible trip I've ever had
Related info for your journey
Find useful and relevant information for your journey from Ottawa to Heathrow. 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 from for flights from Ottawa to London Heathrow?
If you book a flight to London Heathrow from Ottawa, you will be flying from 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 Ottawa to London Heathrow per day from 1 airline.
How long is the flight from Ottawa to London Heathrow Airport?
For as low as £508, Virgin Atlantic can have you in London Heathrow Airport from Ottawa in 9h 45m. Ottawa and London Heathrow Airport are separated by a distance of 3320 mi. This flight may include one or multiple stops.
What is the cheapest airline to fly from Ottawa to London Heathrow Airport round-trip?
According to our current data, Air Canada (£491), offers the cheapest pricing from Ottawa to London Heathrow Airport. You may be able to fly from Ottawa to London Heathrow Airport for 20% less than the average price by searching for this airline.
What are the most reliable airlines from Ottawa to London Heathrow Airport?
No one likes to see their flight delayed. When booking a flight from Ottawa to London Heathrow Airport consider choosing Air Canada (41%), Aegean Airlines (41%) or Austrian Airlines (41%) as they are the most reliable in getting you off to your destination on time.
Can I find deals for flights from Ottawa to Heathrow that include hotel bookings?
Yes. In addition to deals on Ottawa to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ottawa to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Heathrow.
Can I find deals for business class flights from Ottawa to Heathrow?
Yes. Cheapflights offers flight deals from Ottawa to Heathrow 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 Ottawa to London Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of £530). Flying from Ottawa to London Heathrow Airport in December is currently the most expensive (average of £799). 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 Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 27 September 2026.
Discover the top airline that operate flights from Ottawa to Heathrow. 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 27 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 Ottawa to Heathrow?
When you search for this flight from Ottawa to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Ottawa to Heathrow?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ottawa to Heathrow for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Ottawa to Heathrow with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Ottawa to Heathrow flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Ottawa to Heathrow become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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.