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Cheap flights from Ottawa to London from C$ 436

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to London departing on 7/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ottawa to London

Cheap round-trip flights

United Airlines Logo
5:25 p.m. - 11:45 a.m.YOW-LHR
13h 20m1 stop
United Airlines Logo
8:55 a.m. - 11:54 p.m.LHR-YOW
18h 59m2 stops
C$ 885United Airlines
Find Deal
Mon, 20 Oct - Thu, 30 Oct
United Airlines Logo
5:15 a.m. - 6:55 a.m.YOW-LHR
20h 40m2 stops
United Airlines Logo
8:55 a.m. - 11:54 p.m.LHR-YOW
19h 59m2 stops
C$ 893United Airlines
Find Deal
Wed, 8 Oct - Tue, 4 Nov
Aer Lingus Logo
2:05 p.m. - 9:05 a.m.YOW-LHR
14h 00m2 stops
Aer Lingus Logo
9:50 a.m. - 7:18 p.m.LHR-YOW
14h 28m2 stops
C$ 978Aer Lingus
Find Deal
Mon, 3 Nov - Mon, 24 Nov
Logo
5:55 a.m. - 8:20 p.m.YOW-LHR
33h 25m2 stops
Logo
9:25 p.m. - 12:22 a.m.LHR-YOW
31h 57m2 stops
C$ 986
Find Deal
Sun, 28 Sep - Sun, 5 Oct
Logo
5:55 a.m. - 11:55 a.m.YOW-LHR
49h 00m2 stops
Logo
9:25 p.m. - 12:22 a.m.LHR-YOW
31h 57m2 stops
C$ 989
Find Deal
Fri, 26 Sep - Wed, 1 Oct
Air Canada Logo
6:00 a.m. - 6:30 a.m.YOW-LHR
19h 30m1 stop
Air Canada Logo
12:40 p.m. - 11:08 p.m.LHR-YOW
15h 28m1 stop
C$ 1,004Air Canada
Find Deal
Wed, 13 Aug - Thu, 21 Aug
Air Canada Logo
7:00 a.m. - 9:00 p.m.YOW-LHR
9h 00m1 stop
Air Canada Logo
9:30 a.m. - 1:44 p.m.LHR-YOW
9h 14m1 stop
C$ 1,017Air Canada
Find Deal
Wed, 20 Aug - Wed, 27 Aug
Aer Lingus Logo
10:00 a.m. - 8:00 a.m.YOW-LHR
17h 00m2 stops
Aer Lingus Logo
9:50 a.m. - 9:09 p.m.LHR-YOW
16h 19m2 stops
C$ 1,032Aer Lingus
Find Deal
Thu, 25 Sep - Thu, 2 Oct
Lufthansa Logo
6:40 p.m. - 6:30 a.m.YOW-LHR
30h 50m1 stop
Lufthansa Logo
7:25 a.m. - 9:09 p.m.LHR-YOW
18h 44m2 stops
C$ 1,038Lufthansa
Find Deal
Mon, 1 Sep - Wed, 10 Sep
Lufthansa Logo
1:55 p.m. - 11:50 a.m.YOW-LHR
16h 55m1 stop
Lufthansa Logo
7:25 a.m. - 12:19 a.m.LHR-YOW
21h 54m2 stops
C$ 1,048Lufthansa
Find Deal
Tue, 2 Sep - Wed, 10 Sep

United Airlines flights from Ottawa to London Heathrow Airport

Our best United Airlines deals on Ottawa to London Heathrow Airport flight tickets
United Airlines
20 Oct
YOW5:25 p.m.Ottawa
13h 20m
1 stop
LHR11:45 a.m.London Heathrow
30 Oct
LHR8:55 a.m.London Heathrow
18h 59m
2 stops
YOW11:54 p.m.Ottawa
C$ 885
Find similar
United Airlines
8 Oct
YOW5:15 a.m.Ottawa
20h 40m
2 stops
LHR6:55 a.m.London Heathrow
4 Nov
LHR8:55 a.m.London Heathrow
19h 59m
2 stops
YOW11:54 p.m.Ottawa
C$ 893
Find similar
United Airlines
4 Sep
YOW12:30 p.m.Ottawa
13h 25m
2 stops
LHR6:55 a.m.London Heathrow
20 Sep
LHR6:50 a.m.London Heathrow
14h 53m
2 stops
YOW4:43 p.m.Ottawa
C$ 894
Find similar

Air Canada flights from Ottawa to London Heathrow Airport

Our best Air Canada deals on Ottawa to London Heathrow Airport flight tickets
Air Canada
13 Aug
YOW6:00 a.m.Ottawa
19h 30m
1 stop
LHR6:30 a.m.London Heathrow
21 Aug
LHR12:40 p.m.London Heathrow
15h 28m
1 stop
YOW11:08 p.m.Ottawa
C$ 1,004
Find similar
Air Canada
20 Aug
YOW7:00 a.m.Ottawa
9h 00m
1 stop
LHR9:00 p.m.London Heathrow
27 Aug
LHR9:30 a.m.London Heathrow
9h 14m
1 stop
YOW1:44 p.m.Ottawa
C$ 1,017
Find similar
Air Canada
20 Aug
YOW1:55 p.m.Ottawa
11h 35m
2 stops
LHR6:30 a.m.London Heathrow
27 Aug
LHR5:40 p.m.London Heathrow
10h 28m
1 stop
YOW11:08 p.m.Ottawa
C$ 1,020
Find similar

See travel insights to London from

How to get the cheapest flight ticket from Ottawa to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Ottawa, with most prices found around C$ 957. If you aren’t able to travel to London Heathrow Airport during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 968.

What is the cheapest day to depart on your flight to London Heathrow Airport?

According to our data, Friday is the cheapest day to fly to London Heathrow Airport from Ottawa. The lowest ticket price found for a Friday departure recently was C$ 1,068. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to London Heathrow Airport for around C$ 1,273.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

Our data shows that the cheapest Ottawa to London Heathrow Airport flights are usually those with departure times in the evening. Our users have found flights to London Heathrow Airport in the evening for as low as C$ 1,084. In the afternoon is when there is more demand to fly to London Heathrow Airport, so prices are often more expensive at around C$ 1,106 per ticket.

What is the cheapest Ottawa to London Heathrow flight route?

Fly from Ottawa to London Heathrow for the best Ottawa - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around C$ 1,063 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Ottawa for as low as C$ 985 on momondo.

What cabin class options are available on Ottawa to London Heathrow flights?

There are 3 cabin classes available to choose from on Ottawa to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ottawa to London Heathrow Airport flights?

No. A direct flight is the cheapest option for a flight between Ottawa to London Heathrow Airport.

How have Ottawa to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Ottawa to London Heathrow Airport flights are approximately 40% cheaper when compared to flights at the same time last year.

When to book flights from Ottawa to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ottawa to London Heathrow Airport (YOW to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to London Heathrow Airport

Best price found

C$ 436

Fastest flight time

6h 35m

Direct flights

Tue, Thu, Fri and Sun
The best one-way flight to London Heathrow Airport from Ottawa in the past 72 hours is C$ 436. The best round-trip flight deal from Ottawa to London Heathrow Airport found on momondo in the last 72 hours is C$ 885.
The fastest flight from Ottawa to London Heathrow Airport takes 6h 35m
Direct flights go from Ottawa to London Heathrow Airport on Tuesday, Thursday, Friday and Sunday. Airlines offering direct flights are: Lufthansa and Air Canada.
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  • How far is Ottawa to London Heathrow by plane?

    There are 5338.5 km between Ottawa and London Heathrow. 6h 35m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Ottawa Airport to London Heathrow Airport?

    Prices for flights from Ottawa Airport to London Heathrow Airport were last updated today.

  • How many operators does momondo search for flights from Ottawa Airport to London Heathrow Airport?

  • How old do you have to be to fly from Ottawa Airport to London Heathrow Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Ottawa to London Heathrow Airport?

  • What is the most popular airline from Ottawa to London Heathrow Airport?

Best airlines flying from Ottawa to London Heathrow Airport

Compare and see reviews for airlines that fly from Ottawa to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom C$ 725Free CancellationRating
7.4
653 reviews
Search Virgin Atlantic flights
Air FrancePriceFrom C$ 725Free CancellationRating
7.5
1,467 reviews
Search Air France flights
KLMPriceFrom C$ 821Free CancellationRating
7.8
1,372 reviews
Search KLM flights
United AirlinesPriceFrom C$ 890Free CancellationRating
7.4
8,846 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 896Free CancellationRating
7.1
9,692 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 947Free CancellationRating
6.8
7,199 reviews
Search Lufthansa flights

  • United Airlines Flights From Ottawa to London Heathrow Airport

    United Airlines operates around 4 flights from Ottawa to London Heathrow Airport every week. The average price of these flights found in the last 72 hours has been C$ 722, but momondo users have found United Airlines deals from Ottawa to London Heathrow Airport from as low as C$ 651 round-trip. United Airlines has been scored 7.4/10 in 8,846 reviews.

  • Air Canada Flights From Ottawa to London Heathrow Airport

    Air Canada is also a popular choice for this route. Air Canada flight deals for Ottawa to London Heathrow Airport start from as low as C$ 655 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around C$ 761. Air Canada operates 4 flights to London Heathrow Airport from Ottawa in an average week. Users have rated it 7.1/10 across 9,692 reviews.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Ipswich
Dartford
Poole
Richmond
Canterbury
Crawley
Ilford
Wembley
Chelmsford
Maidstone
Swindon
Wokingham
Stratford-upon-Avon
Feltham
Uxbridge
Newport
Basingstoke
Milton Keynes

Why use momondo?

Why should I use momondo to find a flight deal from Ottawa to London?

It is quick and easy to find Ottawa to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Ottawa to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ottawa to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Ottawa to London?

Once all potential Ottawa to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ottawa to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Ottawa and alert you when they change.

An easier way to manage your London Heathrow Airport trip

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