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Ottawa

$394+ Cheap flights from London (LON) to Ottawa (YOW)

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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YOW
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from London to Ottawa are usually found in January or February, booked 90 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Cheap flight deals from London to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Ottawa (YOW). 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 octubre 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$631
(Virgin Atlantic)

One-way from

$394
(Air France)

Popular in

August

Cheapest in

January

Average price

$725
Provider with most accurate pricing for London (LON)-Ottawa flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Ottawa flights.
Search Deals
From London (LON) to Ottawa
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One-way flight from London (LON) to Ottawa
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($104 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from London to Ottawa

Cheapest flights from London to Ottawa
Explore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.

This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/2611:40 amLGW - YOW
1 stop17h 59mAir Transat
mié. 12/33:00 pmYOW - LGW
1 stop13h 45mAir Transat
Deal found 10/28$651
This Air Transat 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 Air Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/2511:40 amLGW - YOW
1 stop11h 45mAir Transat
lun. 1/126:45 amYOW - LGW
1 stop22h 00mAir Transat
Deal found 10/29$653
This Air Transat deal was found by Cheapflights users on 10/30. 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 Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/911:40 amLGW - YOW
1 stop11h 45mAir Transat
sáb. 1/108:30 amYOW - LGW
1 stop20h 15mAir Transat
Deal found 10/30$672
This Air Transat deal was found by Cheapflights users on 10/30. 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 Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/2511:40 amLGW - YOW
1 stop11h 45mAir Transat
sáb. 1/108:30 amYOW - LGW
1 stop20h 15mAir Transat
Deal found 10/30$675
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/266:00 amLHR - YOW
2 stops16h 42mSWISS
mié. 12/310:50 amYOW - LHR
2 stops16h 15mSWISS
Deal found 10/28$676
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/56:30 amLHR - YOW
2 stops22h 24mUnited Airlines
mié. 11/196:00 amYOW - LHR
2 stops22h 10mUnited Airlines
Deal found 10/29$679
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/76:50 amLHR - YOW
2 stops14h 42mUnited Airlines
lun. 12/156:00 amYOW - LHR
2 stops23h 25mUnited Airlines
Deal found 10/29$680
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/269:30 amLHR - YOW
2 stops14h 08mLufthansa
mié. 12/39:55 pmYOW - LHR
Nonstop6h 25mLufthansa
Deal found 10/28$685
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/226:50 amLHR - YOW
2 stops14h 28mAir Canada
dom. 12/149:55 pmYOW - LHR
Nonstop6h 25mAir Canada
Deal found 10/29$689
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.
mié. 11/56:50 amLHR - YOW
2 stops12h 17mMultiple Airlines
mié. 11/1910:50 amYOW - LHR
2 stops24h 30mMultiple Airlines
Deal found 10/29$694
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/226:50 amLHR - YOW
2 stops14h 28mAir Canada
lun. 12/152:05 pmYOW - LHR
1 stop11h 25mAir Canada
Deal found 10/29$695
This Air Transat deal was found by Cheapflights users on 10/30. 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 Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/711:40 amLGW - YOW
1 stop11h 45mAir Transat
vie. 1/96:45 amYOW - LGW
1 stop22h 00mAir Transat
Deal found 10/30$699

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Ottawa 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 octubre 30, 2025.
Use the filters below to find and compare flights from London to Ottawa that are best for you.

Fly from

London

Fly to

Ottawa

Route

Depart

Return

Price

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

sáb. 1/24

11:15 am-12:42 am

2 stops18h 27m

Ottawa

lun. 2/9

5:20 pm-10:30 am

1 stop12h 10m

$635

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

sáb. 1/24

11:15 am-12:42 am

2 stops18h 27m

Ottawa

dom. 2/8

5:20 pm-10:30 am

1 stop12h 10m

$635

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

dom. 1/25

6:30 am-3:10 pm

2 stops13h 40m

Ottawa

lun. 2/9

5:20 pm-10:30 am

1 stop12h 10m

$665

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

mié. 3/11

11:40 am-4:51 pm

1 stop33h 11m

Ottawa

dom. 3/15

10:00 am-9:45 am

1 stop19h 45m

$671

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

mar. 12/9

11:40 am-6:25 pm

1 stop11h 45m

Ottawa

jue. 1/8

6:45 am-9:45 am

1 stop22h 00m

$672

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

sáb. 12/6

11:40 am-12:41 am

1 stop18h 01m

Ottawa

jue. 1/8

6:45 am-9:45 am

1 stop22h 00m

$672

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

sáb. 12/6

11:40 am-12:41 am

1 stop18h 01m

Ottawa

sáb. 1/10

8:30 am-9:45 am

1 stop20h 15m

$672

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

sáb. 12/6

11:40 am-12:41 am

1 stop18h 01m

Ottawa

mié. 1/7

6:45 am-9:45 am

1 stop22h 00m

$672

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

jue. 12/25

11:40 am-6:25 pm

1 stop11h 45m

Ottawa

sáb. 1/10

8:30 am-9:45 am

1 stop20h 15m

$675

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

vie. 12/26

11:40 am-6:25 pm

1 stop11h 45m

Ottawa

dom. 1/11

6:45 am-9:45 am

1 stop22h 00m

$675

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 43 results
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Compare providers for flights from London to Ottawa

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 London to Ottawa in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 London-Ottawa flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London-Ottawa flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London-Ottawa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-Ottawa 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 London-Ottawa 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 London to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from London 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 London to Ottawa

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

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

To ensure you get the cheapest price possible for a flight from London to Ottawa, you should look to book at least 90 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, May is the cheapest month in which you can book a flight from London to Ottawa (average of $347). Flying from London to Ottawa in December is currently the most expensive (average of $528). 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 LON to YOW?

Find hourly flight availability from London to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Ottawa as you normally would.

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

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. 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 Ottawa. Reviews last updated octubre 30, 2025.
Read through reviews of airlines operating flights from London to Ottawa, such as Air France, Air Canada, and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air France
7.4
Good
1,482 reviews

Overall

7.4

Boarding

7.4

Comfort

7.3

Crew

8.2

Food

7.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Florian,Feb 2025

YUL - CDG

Always a pleasure to travel with Air France. It might not be up to airline like Qatar or Singapour Airlines but I always find it reassuring flying with Air France.
Air France
7.4
Good
1,482 reviews
Air France
7.4
Good
1,482 reviews

Overall

7.4

Boarding

7.4

Comfort

7.3

Crew

8.2

Food

7.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Florian,Feb 2025

YUL - CDG

Always a pleasure to travel with Air France. It might not be up to airline like Qatar or Singapour Airlines but I always find it reassuring flying with Air France.
Air Canada
7.1
Good
10,377 reviews
Air France
7.4
Good
1,482 reviews

Overall

7.4

Boarding

7.4

Comfort

7.3

Crew

8.2

Food

7.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Florian,Feb 2025

YUL - CDG

Always a pleasure to travel with Air France. It might not be up to airline like Qatar or Singapour Airlines but I always find it reassuring flying with Air France.
Lufthansa
6.8
Okay
7,541 reviews
Air France
7.4
Good
1,482 reviews

Overall

7.4

Boarding

7.4

Comfort

7.3

Crew

8.2

Food

7.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Florian,Feb 2025

YUL - CDG

Always a pleasure to travel with Air France. It might not be up to airline like Qatar or Singapour Airlines but I always find it reassuring flying with Air France.

Related info for your journey

Find useful and relevant information for your journey from London to Ottawa. 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 into for flights to Ottawa from London?

    Ottawa (YOW) is the airport you will fly into if you book a flight from London to Ottawa. You should not have trouble finding flights to Ottawa from London; the airport handles an average of 0 inbound flights from London per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Ottawa airport from London. It is only a 6.6 mi journey from Ottawa (YOW) to Ottawa’s city center.

  • How long is the flight from London to Ottawa?

    For as low as $680, Air Transat can have you in Ottawa from London in 14h 42m. There are 3320 mi between London and Ottawa. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from London to Ottawa round-trip?

    Currently priced at $632, Air Canada will fly you from London to Ottawa and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. You may be able to fly from London to Ottawa for 13% less than the average price by searching for this airline.

  • What are the cheapest airlines to fly from London to Ottawa one-way?

    The cheapest airlines for a one-way flight from London to Ottawa are Air France ($394), WestJet ($429), and Air Transat ($475).

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

    The top 3 most reliable airlines when flying from London to Ottawa are Air Canada (80%), Aegean Airlines (80%) and Austrian Airlines (80%).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Ottawa 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 London to Ottawa?

    Currently, May is the cheapest month in which you can book a flight from London to Ottawa (average of $347). Flying from London to Ottawa in December is currently the most expensive (average of $528). 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 Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Petawawa

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Alternative routes for London to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Pearson Intl flights
Heathrow to Pierre Elliott Trudeau Intl flights
Gatwick to Pearson Intl flights
Manchester to Pearson Intl flights
Edinburgh to Pearson Intl flights

Top airline flying from London to Ottawa

Discover the top airline that operate flights from London to Ottawa. 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$632Average$726FlexibilityNo cancel feeOn-time67%

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