Cheap flights from Ottawa to London Heathrow Airport from £213
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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
23 heinä — 30 heinä1
Return
1 adult
Economy
Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in February or January, booked 20 days in advance, depart on a Wednesday or Monday and return on a Thursday
Cheap 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 18 heinäkuu 2025.
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 18 heinäkuu 2025.
su 28/911:55YOW - LHR
2 stops15h 05mAer Lingus
ti 7/1009:50LHR - YOW
2 stops16h 19mAer Lingus
Deal found 18/7£533
to 21/819:29YOW - LHR
1 stop10h 11mUnited Airlines
to 4/906:50LHR - YOW
2 stops14h 53mUnited Airlines
Deal found 16/7£543
su 17/808:00YOW - LHR
1 stop17h 30mAir Canada
la 30/817:40LHR - YOW
1 stop19h 48mAir Canada
Deal found 17/7£546
ma 11/809:15YOW - LHR
1 stop30h 45mMultiple Airlines
to 28/806:00LHR - YOW
2 stops22h 08mMultiple Airlines
Deal found 18/7£554
ke 10/921:00YOW - LHR
Nonstop6h 35mLufthansa
ke 17/912:40LHR - YOW
Nonstop7h 20mLufthansa
Deal found 18/7£568
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 18 heinäkuu 2025.
su 28/911:55YOW - LHR
2 stops15h 05mAer Lingus
ti 7/1009:50LHR - YOW
2 stops16h 19mAer Lingus
Deal found 18/7£533
to 21/814:48YOW - LHR
1 stop10h 07mUnited Airlines
to 4/906:50LHR - YOW
2 stops15h 16mUnited Airlines
Deal found 17/7£543
su 17/808:00YOW - LHR
1 stop17h 30mAir Canada
la 30/817:40LHR - YOW
1 stop19h 48mAir Canada
Deal found 17/7£546
ma 11/809:15YOW - LHR
1 stop30h 45mMultiple Airlines
to 28/806:00LHR - YOW
2 stops22h 08mMultiple Airlines
Deal found 18/7£554
ke 10/921:00YOW - LHR
Nonstop6h 35mLufthansa
ke 17/912:40LHR - YOW
Nonstop7h 20mLufthansa
Deal found 18/7£568
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 18 heinäkuu 2025.
to 21/818:55YOW - LHR
Nonstop6h 35mAir Canada
ke 27/812:40LHR - YOW
Nonstop7h 20mAir Canada
Deal found 17/7£551
ma 18/818:55YOW - LHR
Nonstop6h 35mMultiple Airlines
ke 27/812:40LHR - YOW
Nonstop7h 20mMultiple Airlines
Deal found 17/7£555
ke 10/921:00YOW - LHR
Nonstop6h 35mLufthansa
ke 17/912:40LHR - YOW
Nonstop7h 20mLufthansa
Deal found 18/7£568
Last-minute flights from Ottawa to Heathrow
Discover last-minute flight deals from Ottawa to Heathrow. Data last updated 18 heinäkuu 2025 and is based on user searches.
to 24/718:55YOW - LHR
Nonstop6h 35mAir Canada
ke 20/817:40LHR - YOW
1 stop19h 48mAir Canada
Deal found 18/7£568
to 24/718:55YOW - LHR
Nonstop6h 35mLufthansa
ke 20/812:40LHR - YOW
Nonstop7h 20mLufthansa
Deal found 16/7£698
pe 25/711:55YOW - LHR
2 stops14h 00mUnited Airlines
ma 18/806:50LHR - YOW
2 stops14h 53mUnited Airlines
Deal found 17/7£605
la 26/717:15YOW - LHR
1 stop15h 30mMultiple Airlines
ti 19/806:30LHR - YOW
2 stops13h 35mMultiple Airlines
Deal found 17/7£800
su 27/713:55YOW - LHR
2 stops37h 00mSWISS
to 7/820:05LHR - YOW
2 stops26h 00mSWISS
Deal found 17/7£788
la 2/821:00YOW - LHR
Nonstop6h 35mLufthansa
ke 27/812:40LHR - YOW
Nonstop7h 20mLufthansa
Deal found 17/7£568
ma 11/809:15YOW - LHR
1 stop30h 45mMultiple Airlines
to 28/806:00LHR - YOW
2 stops22h 08mMultiple Airlines
Deal found 18/7£554
su 17/808:00YOW - LHR
1 stop17h 30mAir Canada
la 30/817:40LHR - YOW
1 stop19h 48mAir Canada
Deal found 17/7£546
to 21/819:29YOW - LHR
1 stop10h 11mUnited Airlines
to 4/906:50LHR - YOW
2 stops14h 53mUnited Airlines
Deal found 16/7£543
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 18 heinäkuu 2025.
ti 21/1012:20YOW - LHR
2 stops18h 45mWestJet
Deal found 17/7£213
pe 17/1018:50YOW - LHR
1 stop36h 15mMultiple Airlines
Deal found 17/7£242
ma 28/718:55YOW - LHR
Nonstop6h 35mAir Canada
Deal found 15/7£255
to 24/713:55YOW - LHR
2 stops24h 25mSWISS
Deal found 16/7£276
to 24/705:15YOW - LHR
2 stops22h 05mUnited Airlines
Deal found 18/7£281
Cheapflights Fare Finder
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 18 heinäkuu 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
su 28/9
11:55-08:00
2 stops15h 05m
London Heathrow
ti 7/10
09:50-21:09
2 stops16h 19m
£533
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
to 21/8
19:29-10:40
1 stop10h 11m
London Heathrow
to 4/9
06:50-16:43
2 stops14h 53m
£543
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
su 17/8
08:00-06:30
1 stop17h 30m
London Heathrow
la 30/8
17:40-08:28
1 stop19h 48m
£546
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
ma 11/8
09:15-21:00
1 stop30h 45m
London Heathrow
to 28/8
06:00-23:08
2 stops22h 08m
£554
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
ke 10/9
21:00-08:35
Nonstop6h 35m
London Heathrow
ke 17/9
12:40-15:00
Nonstop7h 20m
£568
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
ti 21/10
12:20-12:05
2 stops18h 45m
£213
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
pe 17/10
18:50-12:05
1 stop36h 15m
£242
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
ma 28/7
18:55-06:30
Nonstop6h 35m
£255
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
to 24/7
13:55-19:20
2 stops24h 25m
£276
OttawaLondon
YOW - LHR
YOWLHR
Ottawa
to 24/7
05:15-08:20
2 stops22h 05m
£281
Flights are sorted by cheapest return flights first.
Deals found on 17/7
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
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 11 July 2025.
Booking 20 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, January is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of £112). Flying from Ottawa to London Heathrow Airport in August is currently the most expensive (average of £164). 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 18 heinäkuu 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 afternoon could potentially save you up to 13% on airfare.
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 18 heinäkuu 2025.
Read reviews from past customers who have flown with SWISS, United Airlines, andWestJet
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.
Ground and flight crew are lazy. No food. Late. Ryanair is better.
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.
What are the cheapest airlines flying from Ottawa to London Heathrow Airport round-trip?
According to our current data, Aer Lingus (£533), United Airlines (£543), and Air Canada (£546) offers the cheapest pricing from Ottawa to London Heathrow Airport. You may be able to fly from Ottawa to London Heathrow Airport for 7% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Ottawa to London Heathrow Airport one-way?
£213 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and SWISS, with prices starting from £255 and £276, respectively.
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 (74%), Aegean Airlines (74%) or Austrian Airlines (74%) 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, January is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of £112). Flying from Ottawa to London Heathrow Airport in August is currently the most expensive (average of £164). 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 18 heinäkuu 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 18 heinäkuu 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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