HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$264+ Cheap flights from Ottawa (YOW) to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ottawa to Heathrow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in February or January, booked 20 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from Ottawa to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$664
(Air Canada)

One-way from

$264
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$734

Good round-trip deal

$721 or less
Provider with most accurate pricing for Ottawa-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ottawa-London Heathrow flights.
Search Deals
From Ottawa to London Heathrow
Search Deals
One-way flight from Ottawa to London Heathrow
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Ottawa to London Heathrow.
Search Deals

Find flight deals from Ottawa to Heathrow

Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Gotogate deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:55 pmYOW - LHR
Nonstop6h 25mMultiple Airlines
Sun 11/236:00 amLHR - YOW
2 stops18h 18mMultiple Airlines
Deal found 10/29$662
This Air Canada deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/39:55 pmYOW - LHR
Nonstop6h 25mAir Canada
Wed 12/101:25 pmLHR - YOW
1 stop13h 53mAir Canada
Deal found 10/27$664
This Lufthansa deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/289:55 pmYOW - LHR
Nonstop6h 25mLufthansa
Sun 12/712:00 pmLHR - YOW
Nonstop7h 30mLufthansa
Deal found 10/27$665
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1510:20 amYOW - LHR
1 stop15h 10mAir Canada
Mon 11/241:25 pmLHR - YOW
1 stop13h 53mAir Canada
Deal found 10/28$670
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/47:30 pmYOW - LHR
1 stop10h 20mAir Canada
Sun 11/2312:00 pmLHR - YOW
Nonstop7h 30mAir Canada
Deal found 10/28$692
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:10 amYOW - LHR
1 stop14h 45mUnited Airlines
Thu 11/276:50 amLHR - YOW
2 stops17h 07mUnited Airlines
Deal found 10/27$706
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2511:10 amYOW - LHR
1 stop13h 45mUnited Airlines
Tue 12/26:50 amLHR - YOW
2 stops14h 42mUnited Airlines
Deal found 10/28$707
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:00 amYOW - LHR
2 stops20h 55mUnited Airlines
Thu 11/136:50 amLHR - YOW
2 stops22h 04mUnited Airlines
Deal found 10/28$713
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:55 pmYOW - LHR
1 stop10h 15mUnited Airlines
Mon 11/174:20 pmLHR - YOW
2 stops26h 12mUnited Airlines
Deal found 10/26$717

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Heathrow 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, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Ottawa to London Heathrow Airport that are best for you.

Fly from

Ottawa

Fly to

Heathrow

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 12/7

9:55 pm-9:20 am

Nonstop6h 25m

London Heathrow

Sun 12/14

12:00 pm-2:30 pm

Nonstop7h 30m

$665

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 11/26

9:55 pm-9:20 am

Nonstop6h 25m

London Heathrow

Wed 12/3

12:00 pm-2:30 pm

Nonstop7h 30m

$665

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 1/11

9:55 pm-9:20 am

Nonstop6h 25m

London Heathrow

Sun 1/18

12:00 pm-2:30 pm

Nonstop7h 30m

$670

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 3/2

4:15 pm-11:20 am

1 stop14h 05m

London Heathrow

Fri 3/6

7:40 am-6:38 pm

2 stops15h 58m

$670

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 1/30

9:55 pm-9:20 am

Nonstop6h 25m

London Heathrow

Fri 2/13

12:00 pm-2:30 pm

Nonstop7h 30m

$670

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 3/30

6:20 pm-10:00 am

1 stop10h 40m

London Heathrow

Thu 4/9

2:05 pm-4:40 pm

Nonstop7h 35m

$686

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 3/29

4:00 pm-6:30 am

1 stop9h 30m

London Heathrow

Thu 4/9

2:05 pm-4:40 pm

Nonstop7h 35m

$686

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 3/29

4:00 pm-6:30 am

1 stop9h 30m

London Heathrow

Sat 4/11

12:40 pm-3:15 pm

Nonstop7h 35m

$686

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 11/25

11:10 am-5:55 am

1 stop13h 45m

London Heathrow

Tue 12/2

6:50 am-4:32 pm

2 stops14h 42m

$707

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 11/10

5:55 pm-9:10 am

1 stop10h 15m

London Heathrow

Mon 11/17

1:35 pm-10:26 am

1 stop25h 51m

$717

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 22 results
1
2
3

Compare providers for flights from Ottawa to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to Heathrow in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ottawa-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ottawa-London Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ottawa-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ottawa-London Heathrow Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ottawa to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ottawa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ottawa to London Heathrow Airport

How far ahead should I book a flight from Ottawa to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Heathrow. Price data was last updated on October 24, 2025.

Booking 20 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ottawa to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of $502). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of $672). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YOW to LHR?

Find hourly flight availability from Ottawa to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 5% on flights from Ottawa to London Heathrow Airport by exploring options for tickets in the evening.

What is the cheapest day to fly from Ottawa to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Ottawa to Heathrow. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ottawa to London Heathrow Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Ottawa to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated October 29, 2025.
See what other customers who have flown with Air France, Air Canada, and Lufthansa from Ottawa to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air France
7.4
Good
1,482 reviews

Overall

7.4

Food

7.0

Crew

8.2

Boarding

7.4

Comfort

7.3

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
Air France
7.4
Good
1,482 reviews
Air France
7.4
Good
1,482 reviews

Overall

7.4

Food

7.0

Crew

8.2

Boarding

7.4

Comfort

7.3

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
Air Canada
7.1
Good
10,372 reviews
Air France
7.4
Good
1,482 reviews

Overall

7.4

Food

7.0

Crew

8.2

Boarding

7.4

Comfort

7.3

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
Lufthansa
6.8
Okay
7,538 reviews
Air France
7.4
Good
1,482 reviews

Overall

7.4

Food

7.0

Crew

8.2

Boarding

7.4

Comfort

7.3

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ottawa to London Heathrow?

    Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to London Heathrow. You should not have trouble finding flights to London Heathrow from Ottawa; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Ottawa airport to London Heathrow. It is only a 6.6 mi journey to Ottawa (YOW) from Ottawa’s city center.

  • How long is the flight from Ottawa to London Heathrow Airport?

    Lufthansa can get you from Ottawa to London Heathrow Airport in just under 6h 25m. Your travel time will be generally consistent. The distance between Ottawa and London Heathrow Airport is about 3320 mi. All flights are typically nonstop.

  • What are the cheapest airlines flying from Ottawa to London Heathrow Airport round-trip?

    According to our current data, Air France ($454), Lufthansa ($664), and Air Canada ($671) offers the cheapest pricing from Ottawa to London Heathrow Airport. You may be able to fly from Ottawa to London Heathrow Airport for 41% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Ottawa to London Heathrow Airport?

    Consider Air Canada (74%), Aegean Airlines (74%) or Austrian Airlines (74%) when booking your flight. These represent the most reliable airlines when flying from Ottawa to London Heathrow Airport.

  • What are the cheapest flights from Ottawa to London Heathrow Airport?

    The cheapest flight price from Ottawa to London Heathrow Airport is $662. On average you can expect to pay $903. The most popular route, (Ottawa - London Heathrow), can usually be booked for $664.

  • Can I find deals for flights from Ottawa to Heathrow that include hotel bookings?

    Yes. In addition to deals on Ottawa to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Heathrow.

  • Can I find deals for business class flights from Ottawa to Heathrow?

    Yes. Cheapflights offers flight deals from Ottawa to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ottawa to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of $502). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of $672). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Ottawa to Heathrow

Discover the top 3 airlines that operate flights from Ottawa to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$454Average$598FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$664Average$776FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$671Average$793FlexibilityNo cancel feeOn-time67%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights