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Cheap flights from the United Kingdom to Ottawa from £255

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
18 Jun — 25 Jun1
1 adult

Cheap flight deals from United Kingdom to Ottawa

Keep the following information in mind while searching for United Kingdom to Ottawa flight deals. Data was last updated 13 June 2025.

Round-trip from

£366

One-way from

£255

Popular in

August

Cheapest in

January

Average price

£509

Good round-trip deal

£464 or less

Good one-way deal

£673 or less
Air France
  • Air France
  • 2/9-7/9
  • 2 total stops
  • 29h 47m total
  • United Kingdom to Ottawa
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20/8
  • 20/8
  • 2 total stops
  • 31h 05m total
  • United Kingdom to Ottawa
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
Search Deals
Price to beat on a round-trip flight from United Kingdom to Ottawa.
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Price to beat on a one-way flight from United Kingdom to Ottawa.
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Find flight deals from United Kingdom to Ottawa

Cheapest flights from United Kingdom to Ottawa
Explore the most affordable flight options available from United Kingdom to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Fri 29/817:50LHR - YOW
1 stop11h 32mMultiple Airlines
Fri 5/917:15YOW - LHR
1 stop9h 45mMultiple Airlines
Deal found 11/6£397
Thu 3/706:15LHR - YOW
1 stop13h 50mVirgin Atlantic
Thu 10/717:15YOW - LHR
1 stop9h 45mVirgin Atlantic
Deal found 11/6£413
Wed 2/706:30LHR - YOW
2 stops13h 35mKLM
Mon 21/717:15YOW - LHR
2 stops12h 30mKLM
Deal found 12/6£416
Wed 1/1015:20LHR - YOW
2 stops14h 02mAir France
Tue 14/1017:15YOW - LHR
1 stop12h 15mAir France
Deal found 12/6£418
Sat 30/811:35LGW - YOW
2 stops17h 47mMultiple Airlines
Sat 6/905:55YOW - LGW
2 stops24h 25mMultiple Airlines
Deal found 11/6£430
Wed 2/712:40LGW - YOW
1 stop13h 31mAir Transat
Mon 21/717:05YOW - LGW
1 stop9h 50mAir Transat
Deal found 12/6£480
Tue 23/909:30NCL - YOW
2 stops19h 52mMultiple Airlines
Tue 30/917:15YOW - NCL
1 stop13h 35mMultiple Airlines
Deal found 11/6£491
Wed 9/706:00BHX - YOW
1 stop14h 05mAir France
Wed 16/717:15YOW - BHX
1 stop15h 25mAir France
Deal found 11/6£505
Sat 30/817:40LHR - YOW
1 stop10h 28mAir Canada
Sat 6/921:00YOW - LHR
Nonstop6h 35mAir Canada
Deal found 11/6£513
Tue 23/909:30NCL - YOW
2 stops19h 52mKLM
Tue 30/917:15YOW - NCL
2 stops14h 55mKLM
Deal found 11/6£513
Tue 17/606:00LHR - YOW
2 stops16h 04mAustrian Airlines
Wed 3/919:50YOW - LHR
1 stop29h 45mAustrian Airlines
Deal found 12/6£523
Wed 9/720:50BHX - YOW
2 stops23h 15mMultiple Airlines
Wed 16/717:15YOW - BHX
1 stop11h 15mMultiple Airlines
Deal found 11/6£524

Cheapflights Fare Finder

Customise your flight search to find flights from United Kingdom 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 858,174 searches. Data last updated 13 June 2025.
Use the filters below to find and compare flights from the United Kingdom to Ottawa that are best for you.

Fly from

United Kingdom

Fly to

Ottawa

Route

Depart

Return

Price

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 29/8

17:50-00:22

1 stop11h 32m

Ottawa

Fri 5/9

17:15-08:00

1 stop9h 45m

£397

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 3/7

06:15-15:05

1 stop13h 50m

Ottawa

Thu 10/7

17:15-08:00

1 stop9h 45m

£413

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 2/7

06:30-15:05

2 stops13h 35m

Ottawa

Mon 21/7

17:15-10:45

2 stops12h 30m

£416

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 1/10

15:20-00:22

2 stops14h 02m

Ottawa

Tue 14/10

17:15-10:30

1 stop12h 15m

£418

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Sat 30/8

11:35-00:22

2 stops17h 47m

Ottawa

Sat 6/9

05:55-11:20

2 stops24h 25m

£430

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Wed 2/7

12:40-21:11

1 stop13h 31m

Ottawa

Mon 21/7

17:05-07:55

1 stop9h 50m

£480

Newcastle upon TyneOttawa

NCL - YOW

NCLYOW

Newcastle upon Tyne

Tue 23/9

09:30-00:22

2 stops19h 52m

Ottawa

Tue 30/9

17:15-11:50

1 stop13h 35m

£491

BirminghamOttawa

BHX - YOW

BHXYOW

Birmingham

Wed 9/7

06:00-15:05

1 stop14h 05m

Ottawa

Wed 16/7

17:15-13:40

1 stop15h 25m

£505

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 30/8

17:40-23:08

1 stop10h 28m

Ottawa

Sat 6/9

21:00-08:35

Nonstop6h 35m

£513

Newcastle upon TyneOttawa

NCL - YOW

NCLYOW

Newcastle upon Tyne

Tue 23/9

09:30-00:22

2 stops19h 52m

Ottawa

Tue 30/9

17:15-13:10

2 stops14h 55m

£513

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 53 results
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Best time to book a flight from United Kingdom to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from United Kingdom with our price prediction graph.
Estimated return 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 the United Kingdom to Ottawa

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

Currently, January is the cheapest month in which you can book a flight from United Kingdom to Ottawa (average of £588). Flying from United Kingdom to Ottawa in December is currently the most expensive (average of £875). 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 GB to YOW?

Find hourly flight availability from United Kingdom 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 13 June 2025.

When flying from United Kingdom to Ottawa, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ottawa by month

Plan your trip to Ottawa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ottawa ranges from 50.0 - 93.0 inches per month. June is typically the wettest month, when rainfall can reach 93.0 mm. February is typically the driest time to visit Ottawa when rainfall is around 50.0 mm.

Temperature in Ottawa by month

Plan your trip to Ottawa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ottawa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -10.0 C).

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 13 June 2025.
Read through reviews of airlines operating flights from United Kingdom to Ottawa, such as Delta, KLM and Air Transat. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
Delta
8.0
Very Good
7,946 reviews
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
Air Transat
7.8
Good
396 reviews
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
SWISS
7.5
Good
1,624 reviews
Delta
8.0
Very Good
7,946 reviews
Check prices

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Related info for your journey

Find useful and relevant information for your journey from United Kingdom 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 United Kingdom?

    If you book a flight to Ottawa from United Kingdom, you will be flying to Ottawa, which is the city’s only airport. Ottawa (YOW) is located 6.6 mi from the center of Ottawa.

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

    £405 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Transat and Aer Lingus, with prices starting from £428 and £438, respectively.

  • What are the most popular routes from United Kingdom to Ottawa?

    While some choose either London Gatwick - Ottawa or London City - Ottawa, London Heathrow - Ottawa is the most popular route from United Kingdom to Ottawa.

  • What are the most reliable airlines from United Kingdom to Ottawa?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from United Kingdom to Ottawa on time: Air Canada (97%), Aegean Airlines (97%), Austrian Airlines (97%).

  • What are the cheapest flights from United Kingdom to Ottawa?

    Looking for the cheapest flight from United Kingdom to Ottawa? While on average our users pay £1,222, our data indicates the cheapest price to be £367. The most popular route (London Heathrow - Ottawa), is priced around £366.

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

    Yes. In addition to deals on United Kingdom to Ottawa flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Ottawa?

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Ottawa?

    Currently, January is the cheapest month in which you can book a flight from United Kingdom to Ottawa (average of £588). Flying from United Kingdom to Ottawa in December is currently the most expensive (average of £875). 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

Travelling to a place near the United Kingdom?

Book flights to the United Kingdom if you plan to visit one of these locations
Gatineau
Smiths Falls

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Alternative routes for United Kingdom to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from United Kingdom to Ottawa

Discover the top 7 airlines that operate flights from United Kingdom 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 858,174 searches. Data last updated 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£301Average£565FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£334Average£348FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£356Average£571FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£361Average£600FlexibilityNo cancel feeOn-time77%
Search Air France flights
Virgin AtlanticCheapest£373Average£619FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air TransatCheapest£407Average£552FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
LufthansaCheapest£441Average£656FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to Ottawa?

When you search for this flight from United Kingdom to Ottawa, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Ottawa?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from United Kingdom to Ottawa for you. Better yet — we are completely free to use.

Can Cheapflights find flights from United Kingdom to Ottawa with no change fees?

Yes! Cheapflights helps users easily find flights from United Kingdom to Ottawa with no change fees.

Can Cheapflights notify me if prices for flights from United Kingdom to Ottawa become cheaper?

Of course! You can now track prices for flights from United Kingdom to Ottawa and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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