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

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

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 16% of their flights experiencing any sort of delay.

How often are flights from Ottawa to London delayed?

Historically, on average around 16% 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 141 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 58% 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.

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 December 2025, 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.

$259 Cheap Flights from Ottawa to London Heathrow Airport in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ottawa to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:20 pm - 7:55 am

YOW

LHR

9h 35m1 stop

8:55 am - 3:10 pm

LHR

YOW

11h 15m1 stop

$661Air France

Thu, Jan 29 - Fri, Feb 6

5:20 pm - 8:00 am

YOW

LHR

9h 40m1 stop

9:00 am - 3:10 pm

LHR

YOW

11h 10m1 stop

$662Virgin Atlantic

Thu, Jan 29 - Thu, Feb 5

5:45 pm - 4:35 pm

YOW

LHR

17h 50m1 stop

9:00 am - 3:10 pm

LHR

YOW

11h 10m1 stop

$663Virgin Atlantic

Sun, Jan 11 - Sun, Jan 18

4:00 pm - 7:10 am

YOW

LHR

10h 10m1 stop

9:00 am - 7:18 pm

LHR

YOW

15h 18m2 stops

$673Multiple Airlines

Tue, Jan 27 - Tue, Feb 3

5:35 pm - 1:45 pm

YOW

LHR

15h 10m1 stop

11:30 am - 3:10 pm

LHR

YOW

32h 40m1 stop

$674Air France

Fri, Jan 16 - Mon, Jan 19

5:40 am - 12:50 pm

YOW

LHR

26h 10m2 stops

2:50 pm - 2:22 pm

LHR

YOW

28h 32m1 stop

$676Multiple Airlines

Wed, Jan 28 - Wed, Feb 4

9:55 pm - 9:20 am

YOW

LHR

6h 25mnonstop

9:00 am - 2:21 pm

LHR

YOW

10h 21m1 stop

$677Air Canada

Sun, Feb 8 - Sun, Feb 15

4:00 pm - 7:10 am

YOW

LHR

10h 10m1 stop

7:40 am - 6:38 pm

LHR

YOW

15h 58m2 stops

$678Lufthansa

Thu, Jan 29 - Thu, Feb 5

11:20 am - 7:10 am

YOW

LHR

14h 50m2 stops

9:00 am - 2:21 pm

LHR

YOW

10h 21m1 stop

$680Air Canada

Thu, Jan 29 - Thu, Feb 5

11:20 am - 7:10 am

YOW

LHR

14h 50m2 stops

1:25 pm - 7:15 pm

LHR

YOW

10h 50m1 stop

$683Air Canada

Thu, Jan 29 - Fri, Feb 6

Virgin Atlantic flights from Ottawa to London Heathrow Airport

Our best Virgin Atlantic deals on Ottawa to London Heathrow Airport flight tickets

Virgin Atlantic

Jan 29

YOW5:20 pmOttawa

9h 40m

1 stop

LHR8:00 amLondon Heathrow

Feb 5

LHR9:00 amLondon Heathrow

11h 10m

1 stop

YOW3:10 pmOttawa

$662

Find similar

Virgin Atlantic

Jan 11

YOW5:45 pmOttawa

19h 35m

1 stop

LHR6:20 pmLondon Heathrow

Jan 18

LHR8:55 amLondon Heathrow

11h 15m

1 stop

YOW3:10 pmOttawa

$663

Find similar

Virgin Atlantic

May 8

YOW5:15 pmOttawa

12h 15m

1 stop

LHR10:30 amLondon Heathrow

May 18

LHR6:15 amLondon Heathrow

13h 50m

1 stop

YOW3:05 pmOttawa

$715

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

May 22

YOW5:55 pmOttawa

11h 05m

1 stop

LHR10:00 amLondon Heathrow

Jun 5

LHR12:40 pmLondon Heathrow

10h 53m

1 stop

YOW6:33 pmOttawa

$674

Find similar

Air Canada

Feb 8

YOW9:55 pmOttawa

6h 25m

LHR9:20 amLondon Heathrow

Feb 15

LHR12:00 pmLondon Heathrow

7h 30m

YOW2:30 pmOttawa

$677

Find similar

Air Canada

Jan 29

YOW4:00 pmOttawa

10h 10m

1 stop

LHR7:10 amLondon Heathrow

Feb 6

LHR12:00 pmLondon Heathrow

7h 30m

YOW2:30 pmOttawa

$680

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

Thu 1/29

5:20 pm-7:55 am

1 stop9h 35m

London Heathrow

Fri 2/6

8:55 am-3:10 pm

1 stop11h 15m

$661

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 1/29

5:20 pm-8:00 am

1 stop9h 40m

London Heathrow

Thu 2/5

9:00 am-3:10 pm

1 stop11h 10m

$662

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 1/11

5:45 pm-4:35 pm

1 stop17h 50m

London Heathrow

Sun 1/18

9:00 am-3:10 pm

1 stop11h 10m

$663

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 1/27

4:00 pm-7:10 am

1 stop10h 10m

London Heathrow

Tue 2/3

9:00 am-7:18 pm

2 stops15h 18m

$673

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 1/16

5:35 pm-1:45 pm

1 stop15h 10m

London Heathrow

Mon 1/19

11:30 am-3:10 pm

1 stop32h 40m

$674

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 1/28

5:40 am-12:50 pm

2 stops26h 10m

London Heathrow

Wed 2/4

2:50 pm-2:22 pm

1 stop28h 32m

$676

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 2/8

9:55 pm-9:20 am

Nonstop6h 25m

London Heathrow

Sun 2/15

9:00 am-2:21 pm

1 stop10h 21m

$677

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 1/29

4:00 pm-7:10 am

1 stop10h 10m

London Heathrow

Thu 2/5

7:40 am-6:38 pm

2 stops15h 58m

$678

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 1/29

11:20 am-7:10 am

2 stops14h 50m

London Heathrow

Thu 2/5

9:00 am-2:21 pm

1 stop10h 21m

$680

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 1/29

11:20 am-7:10 am

2 stops14h 50m

London Heathrow

Fri 2/6

1:25 pm-7:15 pm

1 stop10h 50m

$683

Flights are sorted by cheapest round-trip 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

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 February is your next best option. Flight prices from Ottawa to London Heathrow Airport during February average around $701.

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 $903.

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 $823. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $891.

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 $766 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 $721 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 62% 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 December 2025, prices for Ottawa to London Heathrow Airport flights are approximately 123% 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	$698
Fastest flight time	6h 25m
Direct flights	Mon, Thu, Sat and Sun

The best flight deal from Ottawa to London Heathrow Airport found on momondo in the last 72 hours is $698

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

Direct flights go from Ottawa to London Heathrow Airport on Monday, Thursday, Saturday and Sunday. 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 December 2025, 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 (64.71% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (26.47%), Airbus A330-300 (2.45%), and Airbus A321neo (1.47%).
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 $663	Free Cancellation	Rating 7.1 10,527 reviews		Search Air Canada flights
Lufthansa	PriceFrom $664	Free Cancellation	Rating 6.8 7,631 reviews		Search Lufthansa flights

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Stratford-upon-Avon

Crawley

Brentwood

Salisbury

Wembley

Watford

Ilford

Cobham

Folkestone

Romford

Richmond

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

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Thu 1/15

Thu 1/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Flights to London Gatwick Airportfrom $345

Flights to London City Airportfrom $426

Flights to London Stansted Airportfrom $374

Flights to London Luton Airportfrom $376

Flights to London Southend Airportfrom $536

Flights to Glasgow Intl Airportfrom $390

Flights to Belfast Intl Airportfrom $535

Flights to Belfast City Airportfrom $526

Cheap flights from Ottawa to London from $259

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 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ottawa to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Virgin Atlantic flights from Ottawa to London Heathrow Airport

Our best Virgin Atlantic 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

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 $903.

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 62% 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 December 2025, prices for Ottawa to London Heathrow Airport flights are approximately 123% 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

What airlines fly to London Heathrow Airport?

How often are flights from Ottawa to London delayed?

Historically, on average around 16% 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 141 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 16% 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

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