Cheap flights from Ottawa to London Heathrow Airport from £203
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
12 Oct — 19 Oct1
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.
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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 12 September 2026.
Mon 21/919:30 -
1 stop10h 10m
Wed 23/909:30 -
2 stops43h 24m
Deal found 9/9£429
Mon 28/908:50 -
1 stop31h 10m
Fri 2/1012:40 -
2 stops26h 38m
Deal found 12/9£455
Wed 7/1009:55 -
2 stops15h 35m
Wed 14/1008:40 -
2 stops37h 30m
Deal found 9/9£461
Thu 8/1018:55 -
Nonstop6h 35m
Mon 19/1012:40 -
1 stop11h 10m
Deal found 8/9£462
Sat 10/1017:30 -
1 stop22h 30m
Thu 15/1012:40 -
1 stop11h 10m
Deal found 9/9£463
Mon 14/918:55 -
Nonstop6h 35m
Mon 21/909:30 -
Nonstop7h 55m
Deal found 9/9£464
Sun 27/911:10 -
1 stop17h 50m
Sun 4/1009:30 -
1 stop9h 28m
Deal found 10/9£465
Tue 15/912:15 -
1 stop27h 45m
Tue 22/909:05 -
2 stops37h 10m
Deal found 8/9£465
Fri 2/1014:35 -
1 stop10h 55m
Fri 9/1009:30 -
1 stop9h 28m
Deal found 8/9£466
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 12 September 2026.
Mon 12/1018:55 -
Nonstop6h 35m
Fri 16/1009:30 -
1 stop9h 28m
Deal found 11/9£482
Fri 20/1117:25 -
1 stop18h 10m
Wed 2/1206:20 -
1 stop13h 40m
Deal found 11/9£499
Tue 6/1006:25 -
1 stop24h 30m
Tue 13/1008:45 -
2 stops34h 32m
Deal found 8/9£505
Fri 20/1117:25 -
2 stops13h 40m
Fri 27/1108:55 -
1 stop11h 05m
Deal found 11/9£538
Wed 25/1117:10 -
1 stop12h 20m
Thu 3/1219:20 -
1 stop24h 40m
Deal found 7/9£508
Wed 30/906:00 -
3 stops19h 45m
Sun 4/1006:50 -
2 stops32h 06m
Deal found 7/9£510
Fri 2/1010:25 -
2 stops14h 30m
Sat 10/1006:50 -
2 stops17h 05m
Deal found 8/9£510
Fri 2/1006:00 -
2 stops18h 55m
Fri 9/1006:50 -
2 stops31h 21m
Deal found 8/9£510
Tue 22/919:30 -
1 stop10h 10m
Fri 2/1011:05 -
1 stop15h 30m
Deal found 11/9£516
Wed 23/906:05 -
1 stop10h 20m
Tue 6/1008:00 -
1 stop18h 35m
Deal found 11/9£516
Sun 11/1006:05 -
2 stops19h 50m
Sun 18/1007:45 -
1 stop30h 26m
Deal found 7/9£517
Mon 5/1018:01 -
1 stop11h 24m
Fri 9/1016:40 -
2 stops21h 31m
Deal found 8/9£518
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 12 September 2026.
Sat 10/1021:00 -
Nonstop6h 35m
Thu 15/1009:30 -
Nonstop7h 55m
Deal found 9/9£462
Thu 8/1018:55 -
Nonstop6h 35m
Mon 19/1009:30 -
Nonstop7h 55m
Deal found 8/9£462
Thu 8/1018:55 -
Nonstop6h 35m
Thu 15/1009:30 -
Nonstop7h 55m
Deal found 7/9£476
Wed 30/921:00 -
Nonstop6h 35m
Sat 10/1014:10 -
Nonstop7h 55m
Deal found 7/9£478
Mon 5/1018:55 -
Nonstop6h 35m
Mon 12/1009:30 -
Nonstop7h 55m
Deal found 9/9£479
Mon 5/1018:55 -
Nonstop6h 35m
Mon 12/1009:30 -
Nonstop7h 55m
Deal found 11/9£479
Wed 23/921:00 -
Nonstop6h 35m
Wed 30/914:10 -
Nonstop7h 55m
Deal found 10/9£480
Sat 10/1021:00 -
Nonstop6h 35m
Mon 19/1009:30 -
Nonstop7h 55m
Deal found 12/9£483
Thu 1/1018:55 -
Nonstop6h 35m
Sat 10/1014:10 -
Nonstop7h 55m
Deal found 8/9£539
Thu 1/1018:55 -
Nonstop6h 35m
Mon 5/1009:30 -
Nonstop7h 55m
Deal found 10/9£542
Thu 1/1018:55 -
Nonstop6h 35m
Thu 8/1009:30 -
Nonstop7h 55m
Deal found 7/9£556
Last-minute flights from Ottawa to Heathrow
Discover last-minute flight deals from Ottawa to Heathrow. Data last updated 12 September 2026 and is based on user searches.
Mon 14/918:55 -
Nonstop6h 35m
Mon 21/909:30 -
Nonstop7h 55m
Deal found 9/9£464
Tue 15/912:15 -
1 stop27h 45m
Tue 22/909:05 -
2 stops37h 10m
Deal found 8/9£465
Mon 21/919:30 -
1 stop10h 10m
Wed 23/909:30 -
2 stops43h 24m
Deal found 9/9£429
Sun 27/911:10 -
1 stop17h 50m
Sun 4/1009:30 -
1 stop9h 28m
Deal found 10/9£465
Mon 28/908:50 -
1 stop31h 10m
Fri 2/1012:40 -
2 stops26h 38m
Deal found 12/9£455
Fri 2/1014:35 -
1 stop10h 55m
Fri 9/1009:30 -
1 stop9h 28m
Deal found 8/9£466
Wed 7/1009:55 -
2 stops15h 35m
Wed 14/1008:40 -
2 stops37h 30m
Deal found 9/9£461
Thu 8/1018:55 -
Nonstop6h 35m
Mon 19/1012:40 -
1 stop11h 10m
Deal found 8/9£462
Sat 10/1017:30 -
1 stop22h 30m
Thu 15/1012:40 -
1 stop11h 10m
Deal found 9/9£463
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 12 September 2026.
Mon 7/1206:10 -
1 stop25h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/9£203
Fri 20/1106:10 -
1 stop25h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/9£205
Thu 10/1206:10 -
1 stop25h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£208
Thu 10/1218:55 -
1 stop36h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£220
Tue 6/1018:25 -
2 stops15h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/9£222
Sun 6/1216:15 -
1 stop15h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/9£224
Tue 13/1018:25 -
2 stops16h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/9£226
Sat 14/1117:40 -
2 stops38h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£227
Sat 17/1018:25 -
2 stops15h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/9£230
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 12 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 12 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
Wed 7/10
06:55-10:20
2 stops22h 25m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£291
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Mon 2/11
18:55-12:50
1 stop36h 55m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£297
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Sun 4/10
14:00-12:05
1 stop17h 05m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£316
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Wed 23/9
10:00-10:15
1 stop19h 15m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£376
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Thu 1/10
10:00-10:15
1 stop19h 15m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£383
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Tue 22/9
10:00-10:15
1 stop19h 15m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£383
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Fri 1/1
10:20-10:30
1 stop19h 10m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£384
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Tue 29/12
10:20-10:25
1 stop19h 05m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£384
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Sat 6/2
10:20-10:25
1 stop19h 05m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£385
OttawaLondon
YOW Ottawa - LHR London Heathrow
YOWLHR
Ottawa
Sat 13/2
10:20-10:25
1 stop19h 05m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£385
Flights are sorted by cheapest return flights first.
Deals found on 9/9
Showing 1-10 of 24 resultsSorted by cheapest first
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2
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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 £521). Flying from Ottawa to London Heathrow Airport in December is currently the most expensive (average of £783). 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 12 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 £482 and £559 in November.The cheapest return price found within the last 5 days was £449 on Multiple Airlines (19 Nov–23 Nov).
How often are flights from Ottawa to London delayed?
About 30% of weekly flights between Ottawa and London have experienced delays in the past year, with the average delay time being 135 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 30% 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 £785.
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 12 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 3 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 £482, Lufthansa can have you in London Heathrow Airport from Ottawa in 6h 35m. 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 (£481), 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 (38%), Aegean Airlines (38%) or Austrian Airlines (38%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Ottawa to London Heathrow Airport?
Looking for the cheapest flight from Ottawa to London Heathrow Airport? While on average our users pay £662, our data indicates the cheapest price to be £650. The most popular route (Ottawa - London Heathrow), is priced around £477.
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 £521). Flying from Ottawa to London Heathrow Airport in December is currently the most expensive (average of £783). 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 12 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 12 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!
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