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Cheap flights from Ottawa to London from C$ 371

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 16/1. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:50 a.m. - 7:10 a.m.YOW-LHR
15h 20m1 stop
Multiple Airlines Logo
11:10 a.m. - 10:18 p.m.LHR-YOW
16h 08m2 stops
C$ 866Multiple Airlines
Find Deal
Mon, 10 Nov - Mon, 24 Nov
Multiple Airlines Logo
10:30 a.m. - 7:10 a.m.YOW-LHR
15h 40m2 stops
Multiple Airlines Logo
6:00 a.m. - 5:42 p.m.LHR-YOW
16h 42m2 stops
C$ 872Multiple Airlines
Find Deal
Wed, 12 Nov - Wed, 19 Nov
Multiple Airlines Logo
9:55 p.m. - 9:20 a.m.YOW-LHR
6h 25mdirect
Multiple Airlines Logo
6:00 a.m. - 5:42 p.m.LHR-YOW
16h 42m2 stops
C$ 876Multiple Airlines
Find Deal
Fri, 14 Nov - Fri, 21 Nov
Air Canada Logo
10:50 a.m. - 7:10 a.m.YOW-LHR
15h 20m1 stop
Air Canada Logo
1:25 p.m. - 9:42 a.m.LHR-YOW
25h 17m1 stop
C$ 889Air Canada
Find Deal
Sat, 29 Nov - Sat, 6 Dec
Air Canada Logo
10:30 a.m. - 7:10 a.m.YOW-LHR
15h 40m2 stops
Air Canada Logo
1:25 p.m. - 10:18 p.m.LHR-YOW
13h 53m1 stop
C$ 896Air Canada
Find Deal
Sun, 30 Nov - Sun, 7 Dec
Air Canada Logo
9:55 p.m. - 9:20 a.m.YOW-LHR
6h 25mdirect
Air Canada Logo
1:25 p.m. - 9:42 a.m.LHR-YOW
25h 17m1 stop
C$ 897Air Canada
Find Deal
Fri, 7 Nov - Fri, 14 Nov
Air Canada Logo
9:55 p.m. - 9:20 a.m.YOW-LHR
6h 25mdirect
Air Canada Logo
9:00 a.m. - 10:06 a.m.LHR-YOW
30h 06m1 stop
C$ 900Air Canada
Find Deal
Fri, 7 Nov - Fri, 14 Nov
Lufthansa Logo
4:00 p.m. - 7:10 a.m.YOW-LHR
10h 10m1 stop
Lufthansa Logo
8:45 a.m. - 10:18 p.m.LHR-YOW
18h 33m2 stops
C$ 921Lufthansa
Find Deal
Mon, 9 Feb - Mon, 16 Feb
Lufthansa Logo
4:00 p.m. - 7:10 a.m.YOW-LHR
10h 10m1 stop
Lufthansa Logo
12:00 p.m. - 2:30 p.m.LHR-YOW
7h 30mdirect
C$ 931Lufthansa
Find Deal
Thu, 4 Dec - Wed, 10 Dec
Lufthansa Logo
9:55 p.m. - 9:20 a.m.YOW-LHR
6h 25mdirect
Lufthansa Logo
12:00 p.m. - 2:30 p.m.LHR-YOW
7h 30mdirect
C$ 932Lufthansa
Find Deal
Wed, 12 Nov - Wed, 26 Nov

Air Canada flights from Ottawa to London Heathrow Airport

Our best Air Canada deals on Ottawa to London Heathrow Airport flight tickets
Air Canada
29 Nov
YOW10:50 a.m.Ottawa
15h 20m
1 stop
LHR7:10 a.m.London Heathrow
6 Dec
LHR1:25 p.m.London Heathrow
25h 17m
1 stop
YOW9:42 a.m.Ottawa
C$ 889
Find similar
Air Canada
30 Nov
YOW10:30 a.m.Ottawa
15h 40m
2 stops
LHR7:10 a.m.London Heathrow
7 Dec
LHR1:25 p.m.London Heathrow
13h 53m
1 stop
YOW10:18 p.m.Ottawa
C$ 896
Find similar
Air Canada
7 Nov
YOW9:55 p.m.Ottawa
6h 25m
LHR9:20 a.m.London Heathrow
14 Nov
LHR1:25 p.m.London Heathrow
25h 17m
1 stop
YOW9:42 a.m.Ottawa
C$ 897
Find similar

Lufthansa flights from Ottawa to London Heathrow Airport

Our best Lufthansa deals on Ottawa to London Heathrow Airport flight tickets
Lufthansa
9 Feb
YOW4:00 p.m.Ottawa
10h 10m
1 stop
LHR7:10 a.m.London Heathrow
16 Feb
LHR8:45 a.m.London Heathrow
18h 33m
2 stops
YOW10:18 p.m.Ottawa
C$ 921
Find similar
Lufthansa
4 Dec
YOW4:00 p.m.Ottawa
10h 10m
1 stop
LHR7:10 a.m.London Heathrow
10 Dec
LHR12:00 p.m.London Heathrow
7h 30m
YOW2:30 p.m.Ottawa
C$ 931
Find similar
Lufthansa
12 Nov
YOW9:55 p.m.Ottawa
6h 25m
LHR9:20 a.m.London Heathrow
26 Nov
LHR12:00 p.m.London Heathrow
7h 30m
YOW2:30 p.m.Ottawa
C$ 932
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ottawa to London Heathrow Airport 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, momondo users made 96,600 searches. Data last updated 16 October 2025.
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

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 10/11

10:50 a.m.-7:10 a.m.

1 stop15h 20m

London Heathrow

Mon 24/11

11:10 a.m.-10:18 p.m.

2 stops16h 08m

C$ 866

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 12/11

10:30 a.m.-7:10 a.m.

2 stops15h 40m

London Heathrow

Wed 19/11

6:00 a.m.-5:42 p.m.

2 stops16h 42m

C$ 872

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 14/11

9:55 p.m.-9:20 a.m.

Nonstop6h 25m

London Heathrow

Fri 21/11

6:00 a.m.-5:42 p.m.

2 stops16h 42m

C$ 876

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 29/11

10:50 a.m.-7:10 a.m.

1 stop15h 20m

London Heathrow

Sat 6/12

1:25 p.m.-9:42 a.m.

1 stop25h 17m

C$ 889

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 30/11

10:30 a.m.-7:10 a.m.

2 stops15h 40m

London Heathrow

Sun 7/12

1:25 p.m.-10:18 p.m.

1 stop13h 53m

C$ 896

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 7/11

9:55 p.m.-9:20 a.m.

Nonstop6h 25m

London Heathrow

Fri 14/11

1:25 p.m.-9:42 a.m.

1 stop25h 17m

C$ 897

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 7/11

9:55 p.m.-9:20 a.m.

Nonstop6h 25m

London Heathrow

Fri 14/11

9:00 a.m.-10:06 a.m.

1 stop30h 06m

C$ 900

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 9/2

4:00 p.m.-7:10 a.m.

1 stop10h 10m

London Heathrow

Mon 16/2

8:45 a.m.-10:18 p.m.

2 stops18h 33m

C$ 921

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 4/12

4:00 p.m.-7:10 a.m.

1 stop10h 10m

London Heathrow

Wed 10/12

12:00 p.m.-2:30 p.m.

Nonstop7h 30m

C$ 931

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 12/11

9:55 p.m.-9:20 a.m.

Nonstop6h 25m

London Heathrow

Wed 26/11

12:00 p.m.-2:30 p.m.

Nonstop7h 30m

C$ 932

Flights are sorted by cheapest round-trip flights first.

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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 typical price of a round-trip flight between Ottawa and London Heathrow Airport?

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$ 973. 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$ 997.

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$ 1,097. 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$ 1,307.

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 morning. Our users have found flights to London Heathrow Airport in the morning for as low as C$ 1,115. At noon is when there is more demand to fly to London Heathrow Airport, so prices are often more expensive at around C$ 1,132 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$ 1,089 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$ 1,000 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?

You could potentially save up to 20% on your flight if you consider stops on a Ottawa to London Heathrow Airport flight.

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

As of October 2025, prices for Ottawa to London Heathrow Airport flights are approximately 43% more expensive 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$ 1,062

Fastest flight time

6h 25m

Direct flights

Mon, Tue, Thu and Sat
The best one-way flight to London Heathrow Airport from Ottawa in the past 72 hours is C$ 1,062. The best round-trip flight deal from Ottawa to London Heathrow Airport found on momondo in the last 72 hours is C$ 1,037.
The fastest flight from Ottawa to London Heathrow Airport takes 6h 25m
Direct flights go from Ottawa to London Heathrow Airport on Monday, Tuesday, Thursday and Saturday. The only airline offering direct flights is Lufthansa.
Search flight deals

  • How far is Ottawa to London Heathrow by plane?

    There are 5338.5 km between Ottawa and London Heathrow. 6h 25m 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
Air FrancePriceFrom C$ 742Free CancellationRating
7.4
1,476 reviews
Search Air France flights
Virgin AtlanticPriceFrom C$ 744Free CancellationRating
7.5
670 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom C$ 905Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 910Free CancellationRating
7.1
10,307 reviews
Search Air Canada flights
LufthansaPriceFrom C$ 973Free CancellationRating
6.8
7,497 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$ 803, but momondo users have found United Airlines deals from Ottawa to London Heathrow Airport from as low as C$ 645 round-trip. United Airlines has been scored 7.4/10 in 8,982 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$ 648 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 10,307 reviews.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Ipswich
Poole
Dartford
Ilford
Swindon
Gatwick
Chelmsford
Wokingham
Slough
Canterbury
Stratford-upon-Avon
Feltham
Hayes
Uxbridge
Wembley
Waterlooville
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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