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Heathrow

$303+ 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
ene. 8 — ene. 151
jue. 1/8
jue. 1/15
1 adult, Economy
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Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in November or February, booked 68 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap 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 diciembre 9, 2025.

This Air Canada deal was found by Cheapflights users on 12/8. 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.
dom. 12/289:55 pmYOW - LHR
Nonstop6h 25mAir Canada
dom. 1/119:00 amLHR - YOW
1 stop10h 21mAir Canada
Deal found 12/8$809
This Air Canada deal was found by Cheapflights users on 12/9. 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.
jue. 12/112:50 pmYOW - LHR
1 stop11h 20mAir Canada
dom. 12/2112:00 pmLHR - YOW
Nonstop7h 30mAir Canada
Deal found 12/9$845
This Air Canada deal was found by Cheapflights users on 12/9. 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.
mar. 12/1610:20 amYOW - LHR
1 stop15h 10mAir Canada
mar. 12/239:00 amLHR - YOW
1 stop13h 43mAir Canada
Deal found 12/9$940
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/242:05 pmYOW - LHR
1 stop13h 25mLufthansa
mié. 12/311:25 pmLHR - YOW
1 stop13h 55mLufthansa
Deal found 12/9$997
This United Airlines deal was found by Cheapflights users on 12/9. 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.
mar. 12/163:10 pmYOW - LHR
1 stop12h 15mUnited Airlines
mar. 12/231:35 pmLHR - YOW
2 stops28h 43mUnited Airlines
Deal found 12/9$1,015
This Air France deal was found by Cheapflights users on 12/8. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/285:20 pmYOW - LHR
1 stop9h 35mMultiple Airlines
dom. 1/1111:45 amLHR - YOW
2 stops17h 57mMultiple Airlines
Deal found 12/8$1,025
This Air Canada deal was found by Cheapflights users on 12/9. 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.
mié. 12/242:05 pmYOW - LHR
2 stops12h 05mAir Canada
mié. 12/311:25 pmLHR - YOW
1 stop25h 17mAir Canada
Deal found 12/9$1,044
This United Airlines deal was found by Cheapflights users on 12/8. 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.
lun. 12/1511:10 amYOW - LHR
1 stop19h 05mUnited Airlines
lun. 12/221:35 pmLHR - YOW
2 stops32h 43mUnited Airlines
Deal found 12/8$1,056

Find 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 diciembre 9, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$671
(Air Canada)

One-way from

$306
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,001

Good round-trip deal

$736 or less

Good one-way deal

$705 or less
Provider with most accurate pricing for Ottawa-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Ottawa-London Heathrow flights.
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From Ottawa to London Heathrow
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One-way flight from Ottawa to London Heathrow
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Ottawa to London Heathrow.
Search Deals
Price to beat on a one-way flight from Ottawa to London Heathrow.
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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 diciembre 9, 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

mié. 1/14

9:55 pm-9:20 am

Nonstop6h 25m

London Heathrow

dom. 1/18

12:00 pm-2:30 pm

Nonstop7h 30m

$671

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

jue. 1/22

5:55 pm-11:05 am

1 stop12h 10m

London Heathrow

jue. 1/29

6:50 am-4:30 pm

2 stops14h 40m

$721

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

jue. 2/19

5:48 pm-10:25 am

1 stop11h 37m

London Heathrow

lun. 2/23

9:10 am-9:18 pm

2 stops17h 08m

$729

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

dom. 2/8

10:30 am-10:25 am

2 stops18h 55m

London Heathrow

dom. 2/15

4:20 pm-1:34 pm

2 stops26h 14m

$730

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

mié. 2/4

9:45 am-9:10 am

2 stops18h 25m

London Heathrow

dom. 2/22

4:20 pm-1:34 pm

2 stops26h 14m

$730

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

mar. 4/14

6:00 am-6:55 am

1 stop19h 55m

London Heathrow

mié. 5/27

9:00 am-9:47 am

2 stops29h 47m

$734

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

mié. 4/15

6:52 am-6:55 am

2 stops19h 03m

London Heathrow

mié. 4/29

4:40 pm-10:03 am

1 stop22h 23m

$743

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

sáb. 4/25

8:05 pm-10:00 am

1 stop8h 55m

London Heathrow

sáb. 5/9

2:10 pm-11:08 pm

1 stop13h 58m

$744

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

vie. 4/17

5:15 pm-4:35 pm

1 stop18h 20m

London Heathrow

lun. 4/20

6:15 am-3:05 pm

1 stop13h 50m

$746

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

dom. 1/11

5:40 am-5:30 pm

2 stops30h 50m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 16 results
1
2

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 December.
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
Thrive TravelPrice Accuracy3 starsTrust Score*1 star

*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 December 5, 2025.

Booking 68 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, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of $447). 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 diciembre 9, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 7% on flights from Ottawa to London Heathrow Airport by exploring options for tickets in the evening.

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 diciembre 9, 2025.
See what other customers who have flown with 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 Canada
7.1
Good
10,514 reviews

Comfort

7.1

Food

6.3

Crew

7.8

Entertainment

6.8

Boarding

7.3

Overall

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍
Air Canada
7.1
Good
10,514 reviews
Air Canada
7.1
Good
10,514 reviews

Comfort

7.1

Food

6.3

Crew

7.8

Entertainment

6.8

Boarding

7.3

Overall

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍
Lufthansa
6.8
Okay
7,618 reviews
Air Canada
7.1
Good
10,514 reviews

Comfort

7.1

Food

6.3

Crew

7.8

Entertainment

6.8

Boarding

7.3

Overall

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍

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 3 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 2 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?

    Air Canada and United Airlines can get you from Ottawa to London Heathrow Airport in just under 6h 25m. Your travel time can differ by up to 5h 45m. The distance between Ottawa and London Heathrow Airport is about 3320 mi. This flight may include one or multiple stops.

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

    According to our current data, Air Canada ($663), and Lufthansa ($664) offers the cheapest pricing from Ottawa to London Heathrow Airport. You may be able to fly from Ottawa to London Heathrow Airport for 13% less than the average price by searching for these airlines.

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

    Consider Aegean Airlines (59%), Air Canada (58%) or Austrian Airlines (58%) 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 $661. On average you can expect to pay $893. The most popular route, (Ottawa - London Heathrow), can usually be booked for $678.

  • 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, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of $447). 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
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley

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Top 2 airlines flying from Ottawa to Heathrow

Discover the top 2 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 diciembre 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$663Average$777FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$664Average$783FlexibilityNo cancel feeOn-time76%

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