Cheap flights from Ottawa to London Heathrow Airport from £217
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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
4 Jan — 11 Jan1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in February or January, booked 68 days in advance, depart on a Monday or Tuesday and return on a Friday
Cheap flight deals from Ottawa to Heathrow
Enter your travel dates to find the best prices.
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 5 December 2025.
Fri 5/1212:15YOW - LHR
1 stop27h 20mMultiple Airlines
Fri 12/1212:00LHR - YOW
Nonstop7h 30mMultiple Airlines
Deal found 4/12£495
Fri 5/1221:55YOW - LHR
Nonstop6h 25mAir Canada
Sat 13/1209:00LHR - YOW
1 stop13h 43mAir Canada
Deal found 3/12£496
Thu 4/1208:00YOW - LHR
1 stop31h 35mAir Canada
Thu 11/1209:00LHR - YOW
1 stop10h 21mAir Canada
Deal found 3/12£497
Fri 5/1208:00YOW - LHR
1 stop31h 35mAir Canada
Fri 12/1209:00LHR - YOW
1 stop30h 06mAir Canada
Deal found 4/12£498
Thu 4/1211:10YOW - LHR
2 stops14h 30mUnited Airlines
Thu 11/1206:50LHR - YOW
2 stops14h 42mUnited Airlines
Deal found 3/12£528
Fri 5/1221:55YOW - LHR
Nonstop6h 25mAir Canada
Thu 8/109:00LHR - YOW
1 stop10h 21mAir Canada
Deal found 3/12£549
Sun 14/1221:55YOW - LHR
Nonstop6h 25mAir Canada
Sun 15/209:00LHR - YOW
1 stop13h 43mAir Canada
Deal found 3/12£551
Tue 9/1214:17YOW - LHR
1 stop11h 23mUnited Airlines
Tue 16/1207:25LHR - YOW
1 stop32h 01mUnited Airlines
Deal found 4/12£555
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 5 December 2025.
Sat 17/110:30YOW - LHR
2 stops15h 40mAir Canada
Sat 24/109:00LHR - YOW
1 stop10h 21mAir Canada
Deal found 3/12£480
Wed 21/121:55YOW - LHR
Nonstop6h 25mMultiple Airlines
Wed 28/109:00LHR - YOW
2 stops15h 18mMultiple Airlines
Deal found 3/12£492
Mon 26/116:15YOW - LHR
2 stops15h 45mSWISS
Wed 11/209:00LHR - YOW
2 stops15h 18mSWISS
Deal found 3/12£512
Wed 11/221:55YOW - LHR
Nonstop6h 25mAir Canada
Mon 16/206:00LHR - YOW
2 stops32h 42mAir Canada
Deal found 4/12£494
Wed 11/214:50YOW - LHR
1 stop11h 20mMultiple Airlines
Mon 16/220:05LHR - YOW
2 stops28h 13mMultiple Airlines
Deal found 4/12£496
Fri 23/121:55YOW - LHR
Nonstop6h 25mAir Canada
Sun 1/212:00LHR - YOW
Nonstop7h 30mAir Canada
Deal found 4/12£500
Thu 26/219:55YOW - LHR
2 stops19h 40mMultiple Airlines
Mon 9/319:25LHR - YOW
2 stops29h 53mMultiple Airlines
Deal found 3/12£514
Mon 9/214:50YOW - LHR
1 stop11h 20mAir Canada
Fri 20/212:00LHR - YOW
Nonstop7h 30mAir Canada
Deal found 3/12£502
Thu 26/212:15YOW - LHR
1 stop27h 20mAir Canada
Mon 9/313:25LHR - YOW
1 stop9h 50mAir Canada
Deal found 4/12£521
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 5 December 2025.
Wed 21/121:55YOW - LHR
Nonstop6h 25mAir Canada
Wed 28/112:00LHR - YOW
Nonstop7h 30mAir Canada
Deal found 3/12£498
Fri 23/121:55YOW - LHR
Nonstop6h 25mAir Canada
Sun 1/212:00LHR - YOW
Nonstop7h 30mAir Canada
Deal found 2/12£500
Fri 23/121:55YOW - LHR
Nonstop6h 25mMultiple Airlines
Sun 15/212:00LHR - YOW
Nonstop7h 30mMultiple Airlines
Deal found 3/12£501
Wed 14/121:55YOW - LHR
Nonstop6h 25mMultiple Airlines
Wed 21/112:00LHR - YOW
Nonstop7h 30mMultiple Airlines
Deal found 4/12£501
Thu 7/518:55YOW - LHR
Nonstop6h 35mAir Canada
Wed 27/512:40LHR - YOW
Nonstop7h 55mAir Canada
Deal found 3/12£530
Mon 11/518:55YOW - LHR
Nonstop6h 35mAir Canada
Sat 30/512:40LHR - YOW
Nonstop7h 55mAir Canada
Deal found 4/12£531
Wed 18/221:55YOW - LHR
Nonstop6h 25mMultiple Airlines
Sun 8/312:00LHR - YOW
Nonstop7h 30mMultiple Airlines
Deal found 3/12£532
Wed 4/321:55YOW - LHR
Nonstop6h 25mMultiple Airlines
Wed 11/312:00LHR - YOW
Nonstop7h 30mMultiple Airlines
Deal found 4/12£536
Wed 15/421:00YOW - LHR
Nonstop6h 35mAir Canada
Wed 27/512:40LHR - YOW
Nonstop7h 55mAir Canada
Deal found 4/12£539
Mon 30/318:55YOW - LHR
Nonstop6h 35mAir Canada
Mon 13/414:05LHR - YOW
Nonstop7h 55mAir Canada
Deal found 3/12£545
Sat 30/521:00YOW - LHR
Nonstop6h 35mAir Canada
Mon 15/609:30LHR - YOW
Nonstop7h 55mAir Canada
Deal found 2/12£546
Wed 15/421:00YOW - LHR
Nonstop6h 35mAir Canada
Wed 29/412:40LHR - YOW
Nonstop7h 55mAir Canada
Deal found 4/12£546
Last-minute flights from Ottawa to Heathrow
Discover last-minute flight deals from Ottawa to Heathrow. Data last updated 5 December 2025 and is based on user searches.
Thu 11/1216:00YOW - LHR
1 stop10h 10mLufthansa
Wed 17/1212:00LHR - YOW
Nonstop7h 30mLufthansa
Deal found 3/12£747
Sun 14/1221:55YOW - LHR
Nonstop6h 25mAir Canada
Sun 15/209:00LHR - YOW
1 stop13h 43mAir Canada
Deal found 3/12£551
Sun 14/1208:40YOW - LHR
3 stops30h 55mMultiple Airlines
Sun 15/207:50LHR - YOW
2 stops21h 49mMultiple Airlines
Deal found 3/12£760
Mon 15/1216:00YOW - LHR
1 stop10h 10mLufthansa
Wed 18/206:35LHR - YOW
2 stops17h 03mLufthansa
Deal found 2/12£654
Mon 15/1212:15YOW - LHR
1 stop27h 20mAir Canada
Wed 18/212:00LHR - YOW
Nonstop7h 30mAir Canada
Deal found 2/12£654
Mon 15/1220:00YOW - LHR
2 stops19h 35mMultiple Airlines
Wed 18/209:00LHR - YOW
2 stops15h 18mMultiple Airlines
Deal found 3/12£666
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 5 December 2025.
Wed 14/105:40YOW - LHR
3 stops26h 10mWestJet
Deal found 3/12£217
Sun 8/206:00YOW - LHR
1 stop25h 50mWestJet
Deal found 4/12£219
Tue 27/117:45YOW - LHR
1 stop38h 05mWestJet
Deal found 4/12£220
Mon 2/205:40YOW - LHR
3 stops26h 10mWestJet
Deal found 3/12£223
Sun 1/205:40YOW - LHR
3 stops26h 10mWestJet
Deal found 3/12£225
Sat 17/118:55YOW - LHR
1 stop36h 55mMultiple Airlines
Deal found 3/12£227
Sun 1/218:55YOW - LHR
1 stop36h 55mMultiple Airlines
Deal found 3/12£229
Fri 6/210:00YOW - LHR
3 stops21h 50mMultiple Airlines
Deal found 4/12£230
Tue 27/106:45YOW - LHR
3 stops25h 05mMultiple Airlines
Deal found 4/12£232
Wed 4/219:25YOW - LHR
2 stops36h 25mMultiple Airlines
Deal found 4/12£234
Mon 2/206:45YOW - LHR
3 stops25h 05mMultiple Airlines
Deal found 4/12£235
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 5 December 2025.
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 858,174 searches. Data last updated 5 December 2025.
Use the filters below to find and compare flights from Ottawa to London Heathrow Airport that are best for you.
Fly from
Ottawa
Fly to
Heathrow
Route
Depart
Return
Price
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
Sat 17/1
10:30-07:10
2 stops15h 40m
London Heathrow
Sat 24/1
09:00-14:21
1 stop10h 21m
£480
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
Wed 21/1
21:55-09:20
Nonstop6h 25m
London Heathrow
Wed 28/1
09:00-19:18
2 stops15h 18m
£492
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
Wed 11/2
21:55-09:20
Nonstop6h 25m
London Heathrow
Mon 16/2
06:00-09:42
2 stops32h 42m
£494
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
Wed 11/2
14:50-07:10
1 stop11h 20m
London Heathrow
Mon 16/2
20:05-19:18
2 stops28h 13m
£496
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
Fri 23/1
21:55-09:20
Nonstop6h 25m
London Heathrow
Sun 1/2
12:00-14:30
Nonstop7h 30m
£500
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
Mon 9/2
14:50-07:10
1 stop11h 20m
London Heathrow
Fri 20/2
12:00-14:30
Nonstop7h 30m
£502
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
Mon 26/1
16:15-13:00
2 stops15h 45m
London Heathrow
Wed 11/2
09:00-19:18
2 stops15h 18m
£512
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
Thu 26/2
19:55-20:35
2 stops19h 40m
London Heathrow
Mon 9/3
19:25-21:18
2 stops29h 53m
£514
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
Thu 26/2
12:15-20:35
1 stop27h 20m
London Heathrow
Mon 9/3
13:25-19:15
1 stop9h 50m
£521
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
Sun 1/2
05:40-12:50
2 stops26h 10m
£220
Flights are sorted by cheapest return flights first.
Deals found on 3/12
Showing 1-10 of 19 results
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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.
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?
Use this chart to determine the optimal time to book a return flight from Ottawa to Heathrow. Price data was last updated on 28 November 2025.
Booking 68 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, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of £353). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of £504). 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 5 December 2025.
One of the essential ways to save on airfare from Ottawa to London Heathrow Airport is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the evening could potentially save you up to 9% on airfare.
How often are flights from Ottawa to London delayed?
About 16% of weekly flights between Ottawa and London have experienced delays in the past year, with the average delay time being 141 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?
Monday 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 16% 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.
Paris (CDG) – chosen by Cheapflights users on 42% 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.
Washington, D.C. (IAD) is the most affordable one-stop option, with an average return flight price of £497.
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 Halifax (YHZ) have the shortest average one-way travel time for one-stop routes: 9h 20m.
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 57m.
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 5 December 2025.
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.
It's was great and the crew are very nice, captain has a smooth land on the runway 👍
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 £480, Air Canada can have you in London Heathrow Airport from Ottawa in 15h 40m. Ottawa and London Heathrow Airport are separated by a distance of 3320 mi.
What is the cheapest airline to fly from Ottawa to London Heathrow Airport round-trip?
According to our current data, Air Canada (£454), offers the cheapest pricing from Ottawa to London Heathrow Airport. You may be able to fly from Ottawa to London Heathrow Airport for 21% 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 Aegean Airlines (59%), Air Canada (58%) or Austrian Airlines (58%) 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 £615, our data indicates the cheapest price to be £484. The most popular route (Ottawa - London Heathrow), is priced around £484.
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, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of £353). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of £504). 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 5 December 2025.
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 858,174 searches. Data last updated 5 December 2025.
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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