What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Ottawa to London flights?

According to our data, Aegean Airlines have had the fewest delays on this route over the last 12 months, with about 14% of their flights experiencing any sort of delay.

What is the most punctual flight time for Ottawa to London flights?

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

What is the cheapest airline that flies from Ottawa to London Heathrow?

WestJet is the most popular carrier operating from Ottawa to London Heathrow

How often are flights from Ottawa to London delayed?

Historically, on average around 14% of flights between Ottawa and London have experienced a delay on any given week. The average delay length over the past 12 months has been 155 minutes.

Which airlines fly to London Heathrow Airport?

Air Canada, British Airways and American Airlines are the top three most popular airlines that fly to London Heathrow Airport from Ottawa according to our data. Air Canada is the first choice among our users, with 76% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 3 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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 are updated daily.

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

There is 1 operator available for flights from Ottawa Airport to London Heathrow Airport as of October 2025.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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.

£190 Cheap Flights from Ottawa to London Heathrow Airport in 2025/26

Q: What is the typical price of a round-trip flight between Ottawa and London Heathrow Airport?

Prices are currently low for flights on this route. Typical prices usually range from £512 to £622. The lowest price recently found on this route was £486.

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10:50 - 20:35YOW-LHR

28h 45m2 stops

06:00 - 18:38LHR-YOW

17h 38m2 stops

£486Multiple Airlines

Find Deal

Do, 13 Nov - Di, 18 Nov

18:05 - 11:20YOW-LHR

12h 15m1 stop

08:45 - 22:18LHR-YOW

18h 33m2 stops

£488Multiple Airlines

Find Deal

Di, 11 Nov - Mi, 26 Nov

12:05 - 06:30YOW-LHR

13h 25m1 stop

12:00 - 14:30LHR-YOW

7h 30mdirect

£494Air Canada

Find Deal

Sa, 15 Nov - Mi, 19 Nov

10:50 - 07:10YOW-LHR

15h 20m1 stop

06:50 - 16:18LHR-YOW

14h 28m2 stops

£497Air Canada

Find Deal

Mi, 19 Nov - Do, 27 Nov

16:15 - 08:30YOW-LHR

11h 15m1 stop

12:00 - 14:30LHR-YOW

7h 30mdirect

£515Lufthansa

Find Deal

Mo, 2 Mrz - Fr, 6 Mrz

14:05 - 08:30YOW-LHR

13h 25m1 stop

12:00 - 14:30LHR-YOW

7h 30mdirect

£516Lufthansa

Find Deal

Mo, 2 Mrz - Fr, 6 Mrz

10:20 - 08:05YOW-LHR

16h 45m2 stops

09:50 - 19:18LHR-YOW

14h 28m2 stops

£525Aer Lingus

Find Deal

Do, 4 Dez - Do, 8 Jan

10:20 - 08:05YOW-LHR

16h 45m2 stops

08:50 - 19:18LHR-YOW

15h 28m2 stops

£528Aer Lingus

Find Deal

Do, 11 Dez - Di, 16 Dez

11:10 - 06:40YOW-LHR

14h 30m2 stops

06:50 - 16:32LHR-YOW

14h 42m2 stops

£537United Airlines

Find Deal

Mi, 26 Nov - Mi, 3 Dez

15:10 - 10:50YOW-LHR

14h 40m2 stops

06:50 - 16:32LHR-YOW

14h 42m2 stops

£538United Airlines

Find Deal

Mi, 3 Dez - Di, 9 Dez

Lufthansa flights from Ottawa to London Heathrow Airport

Our best Lufthansa deals on Ottawa to London Heathrow Airport flight tickets

Lufthansa

2 Mar

YOW16:15Ottawa

11h 15m

1 stop

LHR08:30London Heathrow

6 Mar

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£515

Find similar

Lufthansa

2 Mar

YOW14:05Ottawa

13h 25m

1 stop

LHR08:30London Heathrow

6 Mar

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£516

Find similar

Lufthansa

5 Nov

YOW21:55Ottawa

6h 25m

LHR09:20London Heathrow

23 Nov

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£589

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

9 Nov

YOW21:55Ottawa

6h 25m

LHR09:20London Heathrow

16 Nov

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£489

Find similar

Air Canada

9 Nov

YOW21:55Ottawa

6h 25m

LHR09:20London Heathrow

16 Nov

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£493

Find similar

Air Canada

15 Nov

YOW12:05Ottawa

13h 25m

1 stop

LHR06:30London Heathrow

19 Nov

LHR12:00London Heathrow

7h 30m

YOW14:30Ottawa

£494

Find similar

momondo Fare Finder

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

Do 13/11

10:50-20:35

2 stops28h 45m

London Heathrow

Di 18/11

06:00-18:38

2 stops17h 38m

£486

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Di 11/11

18:05-11:20

1 stop12h 15m

London Heathrow

Mi 26/11

08:45-22:18

2 stops18h 33m

£488

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sa 15/11

12:05-06:30

1 stop13h 25m

London Heathrow

Mi 19/11

12:00-14:30

Nonstop7h 30m

£494

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mi 19/11

10:50-07:10

1 stop15h 20m

London Heathrow

Do 27/11

06:50-16:18

2 stops14h 28m

£497

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mo 2/3

16:15-08:30

1 stop11h 15m

London Heathrow

Fr 6/3

12:00-14:30

Nonstop7h 30m

£515

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mo 2/3

14:05-08:30

1 stop13h 25m

London Heathrow

Fr 6/3

12:00-14:30

Nonstop7h 30m

£516

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Do 4/12

10:20-08:05

2 stops16h 45m

London Heathrow

Do 8/1

09:50-19:18

2 stops14h 28m

£525

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Do 11/12

10:20-08:05

2 stops16h 45m

London Heathrow

Di 16/12

08:50-19:18

2 stops15h 28m

£528

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mi 26/11

11:10-06:40

2 stops14h 30m

London Heathrow

Mi 3/12

06:50-16:32

2 stops14h 42m

£537

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mi 3/12

15:10-10:50

2 stops14h 40m

London Heathrow

Di 9/12

06:50-16:32

2 stops14h 42m

£538

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Delays

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?

In general, February is the cheapest month to fly from Ottawa to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £526. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Ottawa averaging around £539.

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

On average, the least expensive day to fly to London Heathrow Airport from Ottawa is on a Monday. momondo users have found tickets for Monday departures for as low as £552. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Sunday is £663.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Ottawa to London Heathrow Airport in the evening for as low as £567. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £632 on average. Flights to London Heathrow Airport from Ottawa at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 £589 when searching weeks before you fly. 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 £540 on momondo.

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

There are 2 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 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 return 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	£532
Fastest flight time	6h 25m
Direct flights	Mon, Thu and Sat

The best flight deal from Ottawa to London Heathrow Airport found on momondo in the last 72 hours is £532

The fastest flight from Ottawa to London Heathrow Airport takes 6h 25m

Direct flights go from Ottawa to London Heathrow Airport on Monday, Thursday and Saturday. There are no airlines offering direct flights..

Search flight deals

How far is Ottawa to London Heathrow by plane?
There are 3317.2 mi between Ottawa and London Heathrow. Flights usually cover this in 6h 25m, depending on flying conditions and air traffic around both airports.
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 are updated daily.
How many operators does momondo search for flights from Ottawa Airport to London Heathrow Airport?
There is 1 operator available for flights from Ottawa Airport to London Heathrow Airport as of October 2025.
How old do you have to be to fly from Ottawa Airport to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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?
Based on momondo bookings for flights between Ottawa and London Heathrow Airport, the leading plane model is Boeing 787-9 Dreamliner, making up 72.52% of the total bookings. Other popular models include Boeing 787-8 Dreamliner with 14.70%, Airbus A330-300 with 8.63%, and Airbus A321neo with 0.96%.
What is the most popular airline from Ottawa to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ottawa to London Heathrow Airport is Air Canada (100% of total bookings).

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 Canada	PriceFrom £460	Free Cancellation	Rating 7.1 10,381 reviews		Search Air Canada flights

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Northampton

Swindon

Canterbury

Stratford-upon-Avon

Southend-on-Sea

Ipswich

Ilford

Poole

Guildford

Swanage

Colchester

Dover

Hayes

Chelmsford

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ottawa to London. momondo saves you time and could save you money on your trip.

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

Flights from Ottawa to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Ottawa and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Cheap flights from Ottawa to London from £190

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 30/1. 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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Big names, great deals

Filter for what you want

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Find the cheapest flights from Ottawa to London

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Lufthansa flights from Ottawa to London Heathrow Airport

Our best Lufthansa deals on Ottawa to London Heathrow Airport flight tickets

Air Canada flights from Ottawa to London Heathrow Airport

Our best Air Canada deals on Ottawa to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Ottawa to London Heathrow Airport that are best for you.

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?

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

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

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?

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

There are 2 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 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.

What is the cheapest airline that flies from Ottawa to London Heathrow?

WestJet is the most popular carrier operating from Ottawa to London Heathrow

Which airlines fly to London Heathrow Airport?

How often are flights from Ottawa to London delayed?

Historically, on average around 14% of flights between Ottawa and London have experienced a delay on any given week. The average delay length over the past 12 months has been 155 minutes.

What is the most punctual flight time for Ottawa to London flights?

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Ottawa to London flights?

According to our data, Aegean Airlines have had the fewest delays on this route over the last 12 months, with about 14% of their flights experiencing any sort of delay.

When to book flights from Ottawa to London Heathrow Airport

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

Fastest flight time

Direct flights

How far is Ottawa to London Heathrow by plane?

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

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?

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

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

Travelling to a place near London?

Why use momondo?

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

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

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

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

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo