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Cheap flights from the United Kingdom to Ottawa from £273

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YOW
14 Nov — 21 Nov1
1 adult
1 adult, Economy

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 15 October 2025.

Round-trip from

£399

One-way from

£273

Popular in

August

Cheapest in

January

Average price

£547

Good round-trip deal

£548 or less

Good one-way deal

£631 or less
Air Canada
  • Air Canada
  • 19/11-23/11
  • 4 total stops
  • 32h 32m total
  • United Kingdom to Ottawa
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Virgin Atlantic
  • Virgin Atlantic
  • 15/12
  • 1 total stop
  • 13h 50m total
  • United Kingdom to Ottawa
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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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

Enter your travel dates to find the best prices.

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 15 October 2025.

Wed 19/1106:00LHR - YOW
2 stops16h 42mMultiple Airlines
Sun 23/1110:20YOW - LHR
2 stops15h 50mMultiple Airlines
Deal found 12/10£399
Thu 27/1106:50LHR - YOW
2 stops12h 17mAir Canada
Thu 4/1220:25YOW - LHR
2 stops29h 45mAir Canada
Deal found 13/10£407
Mon 10/1109:00LHR - YOW
2 stops15h 18mAir Canada
Mon 17/1120:25YOW - LHR
2 stops19h 10mAir Canada
Deal found 13/10£412
Wed 19/1113:25LHR - YOW
1 stop10h 57mAir Canada
Sun 23/1110:20YOW - LHR
2 stops15h 50mAir Canada
Deal found 12/10£414
Mon 10/1109:00LHR - YOW
2 stops15h 18mMultiple Airlines
Mon 17/1108:30YOW - LHR
2 stops17h 40mMultiple Airlines
Deal found 13/10£421
Tue 11/1106:00LHR - YOW
2 stops17h 38mMultiple Airlines
Tue 18/1110:20YOW - LHR
2 stops15h 50mMultiple Airlines
Deal found 14/10£422
Sat 15/1106:50LHR - YOW
2 stops14h 28mAir Canada
Thu 20/1109:15YOW - LHR
2 stops30h 20mAir Canada
Deal found 14/10£425
Tue 11/1113:25LHR - YOW
1 stop25h 17mAir Canada
Tue 18/1110:20YOW - LHR
2 stops15h 50mAir Canada
Deal found 14/10£431
Thu 27/1113:25LHR - YOW
2 stops24h 58mAir Canada
Sun 30/1121:55YOW - LHR
Nonstop6h 25mAir Canada
Deal found 13/10£434
Thu 27/1113:25LHR - YOW
2 stops23h 53mMultiple Airlines
Thu 4/1216:00YOW - LHR
1 stop10h 10mMultiple Airlines
Deal found 13/10£437
Thu 30/1011:05LHR - YOW
2 stops50h 37mAir Canada
Wed 7/108:30YOW - LHR
2 stops17h 40mAir Canada
Deal found 13/10£443
Tue 11/1111:40LGW - YOW
1 stop17h 59mAir Transat
Tue 18/1118:55YOW - LGW
1 stop9h 50mAir Transat
Deal found 14/10£483

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 15 October 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

Tue 11/11

13:25-09:42

1 stop25h 17m

Ottawa

Tue 18/11

10:20-07:10

2 stops15h 50m

£431

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 13/12

09:00-14:21

1 stop10h 21m

Ottawa

Sun 11/1

16:00-07:10

1 stop10h 10m

£473

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 5/11

09:00-19:18

2 stops15h 18m

Ottawa

Wed 12/11

10:50-08:05

2 stops16h 15m

£481

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Thu 27/11

13:25-08:18

2 stops23h 53m

Ottawa

Mon 5/1

20:00-07:10

1 stop30h 10m

£481

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Wed 12/11

11:40-18:24

1 stop11h 44m

Ottawa

Wed 19/11

06:45-09:45

1 stop22h 00m

£482

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 11/3

11:10-22:18

2 stops15h 08m

Ottawa

Sun 15/3

18:20-07:10

1 stop8h 50m

£483

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 11/3

12:50-21:56

1 stop13h 06m

Ottawa

Wed 18/3

10:20-07:10

2 stops16h 50m

£483

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Tue 11/11

11:40-00:39

1 stop17h 59m

Ottawa

Tue 18/11

18:55-09:45

1 stop9h 50m

£483

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 11/3

09:00-21:18

2 stops16h 18m

Ottawa

Wed 18/3

14:50-08:05

2 stops13h 15m

£484

LondonOttawa

LCY - YOW

LCYYOW

London City

Wed 19/11

09:25-17:42

2 stops13h 17m

Ottawa

Sun 23/11

18:05-16:40

2 stops17h 35m

£487

Flights are sorted by cheapest return flights first.

Deals found on 13/10

Showing 1-10 of 60 results
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6

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, February is the cheapest month in which you can book a flight from United Kingdom to Ottawa (average of £97). Flying from United Kingdom to Ottawa in December is currently the most expensive (average of £400). 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 15 October 2025.

One of the essential ways to save on airfare from United Kingdom to Ottawa is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the afternoon could potentially save you up to 19% on airfare.

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 15 October 2025.
Check out reviews from past customers who have flown with Air Transat, Air France, andVirgin Atlantic from the United Kingdom to Ottawa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Transat
7.7
Good
458 reviews
Check prices

Food

6.7

Overall

7.7

Boarding

7.9

Comfort

7.3

Crew

8.4

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Air Transat
7.7
Good
458 reviews
Air Transat
7.7
Good
458 reviews
Check prices

Food

6.7

Overall

7.7

Boarding

7.9

Comfort

7.3

Crew

8.4

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Air France
7.4
Good
1,475 reviews
Air Transat
7.7
Good
458 reviews
Check prices

Food

6.7

Overall

7.7

Boarding

7.9

Comfort

7.3

Crew

8.4

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Virgin Atlantic
7.4
Good
667 reviews
Air Transat
7.7
Good
458 reviews
Check prices

Food

6.7

Overall

7.7

Boarding

7.9

Comfort

7.3

Crew

8.4

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Air Canada
7.1
Good
10,297 reviews
Air Transat
7.7
Good
458 reviews
Check prices

Food

6.7

Overall

7.7

Boarding

7.9

Comfort

7.3

Crew

8.4

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Lufthansa
6.8
Okay
7,489 reviews
Air Transat
7.7
Good
458 reviews
Check prices

Food

6.7

Overall

7.7

Boarding

7.9

Comfort

7.3

Crew

8.4

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.

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.

  • How long is the flight from United Kingdom to Ottawa?

    A quick flight from United Kingdom to Ottawa can take about 11h 44m. Air Canada provides one of the quickest options available for as low as £482. Airlines will cover a distance of 3340 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    £274 is the cheapest one-way deal found within the past few days, from Virgin Atlantic. You may also be able to find cheap deals on KLM and Air France, with prices starting from £297 and £305, 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 (77%), Aegean Airlines (77%), Austrian Airlines (77%).

  • 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 £2,519, our data indicates the cheapest price to be £382. The most popular route (London Heathrow - Ottawa), is priced around £419.

  • 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, February is the cheapest month in which you can book a flight from United Kingdom to Ottawa (average of £97). Flying from United Kingdom to Ottawa in December is currently the most expensive (average of £400). 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 Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
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 15 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£307Average£564FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£339Average£356FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£354Average£575FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£366Average£605FlexibilityNo cancel feeOn-time77%
Search Air France flights
Virgin AtlanticCheapest£373Average£585FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air TransatCheapest£412Average£538FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
LufthansaCheapest£459Average£551FlexibilityNo 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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