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

According to our data, Air Canada have had the least number of delays on this route over the last 12 months; with about 20% of their flights experiencing any sort of delay.

How often are flights from Ottawa to London delayed?

Historically, on average around 20% 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 138 minutes.

What airlines fly to London Heathrow Airport?

Air Canada, Lufthansa and British Airways 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 59% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 4 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

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

How many flights depart from Ottawa to London Heathrow Airport on average per week?

As of January 2026, there are 16 flights per week flying from Ottawa to London Heathrow Airport. The most common day of the week flights depart is Wed, with 38% of flights taking off on this day.

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

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

How many flights depart from Ottawa to London Heathrow Airport on average per day?

As of January 2026, there are 2 flights per day flying from Ottawa to London Heathrow Airport. The most common time of day flights depart is 9:00PM, with 100% of flights taking off in the evening.

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?

As of January 2026, there are 2 operators available to choose from 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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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.

$348 Cheap Flights from Ottawa to London Heathrow Airport in 2026

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 pm - 9:35 am

YOW

LHR

10h 35m

1 stop

12:40 pm - 6:33 pm

LHR

YOW

10h 53m

1 stop

$627Air Canada

Fri, May 22 - Fri, Jun 5

4:00 pm - 9:35 am

YOW

LHR

12h 35m

1 stop

12:40 pm - 6:33 pm

LHR

YOW

10h 53m

1 stop

$634Air Canada

Fri, May 22 - Fri, Jun 5

7:42 pm - 6:55 am

YOW

LHR

30h 13m

1 stop

1:50 pm - 11:54 pm

LHR

YOW

39h 04m

2 stops

$675United Airlines

Sat, May 23 - Sat, Jun 6

5:20 pm - 8:00 am

YOW

LHR

9h 40m

1 stop

9:00 am - 3:10 pm

LHR

YOW

11h 10m

1 stop

$677Virgin Atlantic

Thu, Feb 19 - Tue, Feb 24

5:20 pm - 6:20 pm

YOW

LHR

20h 00m

1 stop

8:55 am - 3:10 pm

LHR

YOW

11h 15m

1 stop

$679Virgin Atlantic

Mon, Feb 23 - Sun, Mar 1

5:20 pm - 10:30 am

YOW

LHR

12h 10m

1 stop

11:30 am - 3:10 pm

LHR

YOW

32h 40m

1 stop

$690Air France

Thu, Feb 19 - Sun, Feb 22

5:10 pm - 4:35 pm

YOW

LHR

18h 25m

1 stop

6:15 am - 3:00 pm

LHR

YOW

13h 45m

1 stop

$693Air France

Tue, Apr 14 - Tue, Apr 28

5:25 pm - 4:35 pm

YOW

LHR

18h 10m

1 stop

8:55 am - 3:00 pm

LHR

YOW

11h 05m

1 stop

$694Air France

Sun, May 10 - Thu, May 14

5:10 pm - 4:35 pm

YOW

LHR

18h 25m

1 stop

3:20 pm - 3:00 pm

LHR

YOW

28h 40m

1 stop

$706Air France

Tue, Apr 14 - Wed, Apr 29

5:20 pm - 1:50 pm

YOW

LHR

15h 30m

2 stops

6:20 am - 3:10 pm

LHR

YOW

13h 50m

1 stop

$709Multiple Airlines

Thu, Feb 19 - Tue, Feb 24

KLM flights from Ottawa to London Heathrow Airport

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

KLM

Feb 19

YOW5:20 pmOttawa

15h 30m

2 stops

LHR1:50 pmLondon Heathrow

Feb 23

LHR6:30 amLondon Heathrow

13h 40m

2 stops

YOW3:10 pmOttawa

$741

KLM

Feb 19

YOW5:20 pmOttawa

15h 30m

2 stops

LHR1:50 pmLondon Heathrow

Feb 24

LHR6:30 amLondon Heathrow

13h 40m

2 stops

YOW3:10 pmOttawa

$742

KLM

Feb 5

YOW5:20 pmOttawa

15h 30m

2 stops

LHR1:50 pmLondon Heathrow

Feb 12

LHR6:30 amLondon Heathrow

13h 40m

2 stops

YOW3:10 pmOttawa

$743

Air Canada flights from Ottawa to London Heathrow Airport

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

Air Canada

May 22

YOW6:00 pmOttawa

10h 35m

1 stop

LHR9:35 amLondon Heathrow

Jun 5

LHR12:40 pmLondon Heathrow

10h 53m

1 stop

YOW6:33 pmOttawa

$627

Air Canada

May 22

YOW4:00 pmOttawa

12h 35m

1 stop

LHR9:35 amLondon Heathrow

Jun 5

LHR12:40 pmLondon Heathrow

10h 53m

1 stop

YOW6:33 pmOttawa

$634

Air Canada

Feb 18

YOW9:55 pmOttawa

6h 25m

LHR9:20 amLondon Heathrow

Feb 25

LHR9:00 amLondon Heathrow

13h 43m

1 stop

YOW5:43 pmOttawa

$721

momondo Fare Finder

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

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Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 5/22

6:00 pm-9:35 am

1 stop10h 35m

London Heathrow

Fri 6/5

12:40 pm-6:33 pm

1 stop10h 53m

$627

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 5/22

4:00 pm-9:35 am

1 stop12h 35m

London Heathrow

Fri 6/5

12:40 pm-6:33 pm

1 stop10h 53m

$634

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 5/23

7:42 pm-6:55 am

1 stop30h 13m

London Heathrow

Sat 6/6

1:50 pm-11:54 pm

2 stops39h 04m

$675

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 2/19

5:20 pm-8:00 am

1 stop9h 40m

London Heathrow

Tue 2/24

9:00 am-3:10 pm

1 stop11h 10m

$677

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 2/23

5:20 pm-6:20 pm

1 stop20h 00m

London Heathrow

Sun 3/1

8:55 am-3:10 pm

1 stop11h 15m

$679

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 2/19

5:20 pm-10:30 am

1 stop12h 10m

London Heathrow

Sun 2/22

11:30 am-3:10 pm

1 stop32h 40m

$690

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 4/14

5:10 pm-4:35 pm

1 stop18h 25m

London Heathrow

Tue 4/28

6:15 am-3:00 pm

1 stop13h 45m

$693

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 5/10

5:25 pm-4:35 pm

1 stop18h 10m

London Heathrow

Thu 5/14

8:55 am-3:00 pm

1 stop11h 05m

$694

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 4/14

5:10 pm-4:35 pm

1 stop18h 25m

London Heathrow

Wed 4/29

3:20 pm-3:00 pm

1 stop28h 40m

$706

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 2/19

5:20 pm-1:50 pm

2 stops15h 30m

London Heathrow

Tue 2/24

6:20 am-3:10 pm

1 stop13h 50m

$709

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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

Other information

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

The month of November is, on average, the cheapest month to fly to London Heathrow Airport from Ottawa, with most prices found around $683. If you’re not able to fly to London Heathrow Airport in November, then January is your next best option. Flight prices from Ottawa to London Heathrow Airport during January average around $712.

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

Our data shows that Friday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $742. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,109.

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 afternoon. momondo users have found flights departing from Ottawa to London Heathrow Airport in the afternoon for as low as $838. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $848.

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 $767 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 $722 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 61% 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 January 2026, prices for Ottawa to London Heathrow Airport flights are approximately 12% 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	$680
Fastest flight time	6h 25m
Direct flights	Mon, Tue, Thu, Fri and Sat

The best flight deal from Ottawa to London Heathrow Airport found on momondo in the last 72 hours is $680

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, Friday and Saturday. There are no airlines offering direct flights.

Search flight deals

How far is Ottawa to London Heathrow by plane?
Ottawa and London Heathrow are 3317.2 mi apart from one another. By plane, this route typically takes 6h 25m.
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?
As of January 2026, there are 2 operators available to choose from 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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 this flight route, the most popular plane model on flight routes from Ottawa to London Heathrow Airport is Boeing 787-8 Dreamliner (76.21% of total bookings). The next most popular plane models are Airbus A330-300 (14.56%), Boeing 777-300ER (1.94%), and Boeing 787-9 Dreamliner (1.46%).
What is the most popular airline from Ottawa to London Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from Ottawa to London Heathrow Airport is Air Canada, representing 77% of all bookings. The subsequent popular airline is Lufthansa at 23%.

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 $660	Free Cancellation	Rating 7.1 10,667 reviews		Search Air Canada flights
Lufthansa	PriceFrom $664	Free Cancellation	Rating 6.8 7,754 reviews		Search Lufthansa flights

Air Canada Flights From Ottawa to London Heathrow Airport
Across 1 Air Canada flight from Ottawa to London Heathrow Airport this week, the average price was $765, with the best Air Canada deals starting from $660 round-trip. 10,667 users have rated Air Canada on momondo, with an average score of 7.1/10.
Lufthansa Flights From Ottawa to London Heathrow Airport
Lufthansa is also a popular choice for this route. Lufthansa flight deals for Ottawa to London Heathrow Airport start from as low as $664 round-trip, depending on your selected dates, with average Lufthansa deals seen on momondo around $783. Lufthansa operates 3 flights to London Heathrow Airport from Ottawa in an average week. Users have rated it 6.8/10 across 7,754 reviews.

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Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Ottawa.

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

Yes. All flights to London from Ottawa on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to London from Ottawa. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Ottawa to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Heathrow Airport trip

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Cheap flights from Ottawa to London from $348

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 3/18. 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

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KLM flights from Ottawa to London Heathrow Airport

Our best KLM 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

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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

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?

Our data shows that Friday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $742. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,109.

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 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 61% 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 January 2026, prices for Ottawa to London Heathrow Airport flights are approximately 12% more expensive when compared to flights at the same time last year.

What airlines fly to London Heathrow Airport?

How often are flights from Ottawa to London delayed?

Historically, on average around 20% 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 138 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 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 which experiences the fewest number of delays on this flight route. Sunday 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, Air Canada have had the least number of delays on this route over the last 12 months; with about 20% of their flights experiencing any sort of delay.

How many flights depart from Ottawa to London Heathrow Airport on average per day?

As of January 2026, there are 2 flights per day flying from Ottawa to London Heathrow Airport. The most common time of day flights depart is 9:00PM, with 100% of flights taking off in the evening.

How many flights depart from Ottawa to London Heathrow Airport on average per week?

As of January 2026, there are 16 flights per week flying from Ottawa to London Heathrow Airport. The most common day of the week flights depart is Wed, with 38% of flights taking off on this day.

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

Air Canada Flights From Ottawa to London Heathrow Airport

Lufthansa Flights From Ottawa to London Heathrow Airport

Traveling 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, organize 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