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Cheap flights from Ottawa to the United Kingdom from C$ 332

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to United Kingdom

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to United Kingdom
Explore the most affordable flight options available from Ottawa to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2026.

Fri 18/92:00 p.m.
YOW
-
LHR
2 stops13h 05m
Aer Lingus
Sat 3/107:40 a.m.
LHR
-
YOW
2 stops18h 35m
Aer Lingus
Deal found 17/7C$ 642
Tue 8/92:15 p.m.
YOW
-
LGW
1 stop14h 35m
Air Transat
Tue 22/99:40 a.m.
LGW
-
YOW
Nonstop8h 00m
Air Transat
Deal found 13/7C$ 651
Sun 6/92:15 p.m.
YOW
-
LGW
1 stop14h 35m
Air Transat
Sun 13/99:40 a.m.
LGW
-
YOW
Nonstop8h 00m
Air Transat
Deal found 16/7C$ 656
Tue 15/97:40 p.m.
YOW
-
LGW
Nonstop7h 15m
Air Transat
Sun 20/911:35 a.m.
LGW
-
YOW
1 stop11h 00m
Air Transat
Deal found 16/7C$ 659
Sun 13/98:55 p.m.
YOW
-
LGW
1 stop30h 00m
Air Transat
Sun 27/912:40 p.m.
LGW
-
YOW
1 stop12h 20m
Air Transat
Deal found 13/7C$ 665
Wed 21/102:00 p.m.
YOW
-
LHR
2 stops13h 05m
Aer Lingus
Thu 29/107:50 a.m.
LHR
-
YOW
2 stops20h 05m
Aer Lingus
Deal found 17/7C$ 666
Sun 20/96:25 p.m.
YOW
-
EDI
2 stops35h 15m
Multiple Airlines
Fri 2/109:15 a.m.
EDI
-
YOW
2 stops20h 05m
Multiple Airlines
Deal found 17/7C$ 669
Sun 13/98:55 p.m.
YOW
-
LGW
1 stop30h 00m
Air Transat
Fri 18/912:40 p.m.
LGW
-
YOW
1 stop16h 45m
Air Transat
Deal found 15/7C$ 669
Sat 19/97:00 a.m.
YOW
-
LGW
1 stop22h 45m
Air Transat
Mon 5/109:40 a.m.
LGW
-
YOW
1 stop15h 20m
Air Transat
Deal found 17/7C$ 670
Sun 20/96:25 p.m.
YOW
-
EDI
2 stops33h 05m
Multiple Airlines
Sat 3/108:35 a.m.
EDI
-
YOW
2 stops15h 35m
Multiple Airlines
Deal found 17/7C$ 680
Thu 17/92:00 p.m.
YOW
-
LHR
2 stops14h 05m
Aer Lingus
Sun 4/109:50 a.m.
LHR
-
YOW
2 stops19h 55m
Aer Lingus
Deal found 17/7C$ 694
Mon 12/1010:00 a.m.
YOW
-
EDI
2 stops17h 30m
Aer Lingus
Sat 24/1012:20 p.m.
EDI
-
YOW
2 stops38h 30m
Aer Lingus
Deal found 17/7C$ 742

Find flight deals from Ottawa to United Kingdom

Keep the following information in mind while searching for Ottawa to United Kingdom flight deals. Data was last updated 18 July 2026.

Round-trip from

C$ 642

One-way from

C$ 332

Popular in

December

Cheapest in

February

Average price

C$ 1,213

Good round-trip deal

C$ 655 or less

Good one-way deal

C$ 487 or less
Aer Lingus
  • Aer Lingus
  • 18/9-3/10
  • 4 total stops
  • 31h 40m total
  • Ottawa to United Kingdom
Search Deals
WestJet
  • WestJet
  • 15/9
  • 1 total stop
  • 21h 45m total
  • Ottawa to United Kingdom
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Ottawa to United Kingdom.
Search Deals
Price to beat on a one-way flight from Ottawa to United Kingdom.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to United Kingdom 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 629,999 searches. Data last updated 18 July 2026.
Use the filters below to find and compare flights from Ottawa to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 16/10

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Mon 19/10

12:40 p.m.-8:00 p.m.

1 stop12h 20m

C$ 697

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 16/10

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Sat 17/10

12:40 p.m.-2:55 p.m.

1 stop31h 15m

C$ 732
Quickest round-trip

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 6/9

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Tue 15/9

9:40 a.m.-12:40 p.m.

Nonstop8h 00m

C$ 784

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 25/9

4:00 p.m.-10:45 a.m.

1 stop13h 45m

London Gatwick

Tue 29/9

12:40 p.m.-12:25 a.m.

1 stop16h 45m

C$ 808

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Tue 25/8

2:15 p.m.-9:50 a.m.

1 stop14h 35m

London Gatwick

Mon 7/9

12:40 p.m.-8:05 a.m.

1 stop24h 25m

C$ 808

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 6/9

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Fri 11/9

9:40 a.m.-12:40 p.m.

Nonstop8h 00m

C$ 843

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Fri 18/9

7:40 p.m.-7:55 a.m.

Nonstop7h 15m

London Gatwick

Tue 13/10

12:40 p.m.-2:55 p.m.

1 stop31h 15m

C$ 851

OttawaLondon

YOW - LTN

YOWLTN

Ottawa

Sun 9/8

6:55 a.m.-1:25 p.m.

3 stops25h 30m

London Luton

Tue 25/8

9:40 a.m.-12:20 a.m.

2 stops19h 40m

C$ 878

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Wed 11/11

5:40 p.m.-9:45 a.m.

1 stop11h 05m

London Gatwick

Sun 22/11

11:40 a.m.-5:58 p.m.

1 stop11h 18m

C$ 886

OttawaGlasgow

YOW - GLA

YOWGLA

Ottawa

Tue 18/8

8:55 p.m.-6:50 a.m.

1 stop28h 55m

Glasgow Intl

Wed 26/8

8:35 a.m.-12:25 a.m.

1 stop20h 50m

C$ 930

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/7

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Ottawa to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom 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 the United Kingdom

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

Currently, January is the cheapest month in which you can book a flight from Ottawa to United Kingdom (average of C$ 937). Flying from Ottawa to United Kingdom in December is currently the most expensive (average of C$ 1,294). 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 GB?

Find hourly flight availability from Ottawa to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 July 2026.

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

How often are flights from Ottawa to the United Kingdom delayed?

About 27% of weekly flights between Ottawa and United Kingdom have experienced delays in the past year, with the average delay time being 132 minutes.

What is the most punctual flight time for Ottawa to the United Kingdom flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ottawa to the United Kingdom flights?

Over the past year, Air Canada has had the lowest number of delays on this route, with just 27% of flights being delayed.

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

The best time to book flights from Ottawa to United Kingdom is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated 18 July 2026.
Read reviews from past customers who have flown Air Transat,Air France, andWestJet from Ottawa to the United Kingdom. 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.
Air Transat
7.8
Good
565 reviews
Check prices

Crew

8.5

Boarding

8.0

Food

6.8

Overall

7.8

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Paul,Jul 2026

YUL - LGW

Had to bus to the plane which made priority boarding at the back of the bus
Air Transat
7.8
Good
565 reviews
Air Transat
7.8
Good
565 reviews
Check prices

Crew

8.5

Boarding

8.0

Food

6.8

Overall

7.8

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Paul,Jul 2026

YUL - LGW

Had to bus to the plane which made priority boarding at the back of the bus
Air France
7.5
Good
1,626 reviews
Air Transat
7.8
Good
565 reviews
Check prices

Crew

8.5

Boarding

8.0

Food

6.8

Overall

7.8

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Paul,Jul 2026

YUL - LGW

Had to bus to the plane which made priority boarding at the back of the bus
WestJet
7.2
Good
3,409 reviews
Air Transat
7.8
Good
565 reviews
Check prices

Crew

8.5

Boarding

8.0

Food

6.8

Overall

7.8

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Paul,Jul 2026

YUL - LGW

Had to bus to the plane which made priority boarding at the back of the bus
Air Canada
7.1
Good
11,352 reviews
Air Transat
7.8
Good
565 reviews
Check prices

Crew

8.5

Boarding

8.0

Food

6.8

Overall

7.8

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Paul,Jul 2026

YUL - LGW

Had to bus to the plane which made priority boarding at the back of the bus
Lufthansa
6.8
Okay
8,143 reviews
Air Transat
7.8
Good
565 reviews
Check prices

Crew

8.5

Boarding

8.0

Food

6.8

Overall

7.8

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Paul,Jul 2026

YUL - LGW

Had to bus to the plane which made priority boarding at the back of the bus

Related info for your journey

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

    If you book a flight to United Kingdom from Ottawa, you will be flying from Ottawa, which is the city’s only airport. Ottawa (YOW) is located 10.6 km from the centre of Ottawa.

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

    Airlines like Air Transat, Porter Airlines, and United Airlines fly from Ottawa to United Kingdom in about 7h 15m. The time it takes to get you to your destination can typically vary by up to 12h 30m. There are 5375 km between Ottawa and United Kingdom. Both multi-stop and direct flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as C$ 300 on WestJet. Other airlines that offer cheap prices include Air Transat from C$ 413 and Air Canada from C$ 483 one-way.

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

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

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

    No one likes to see their flight delayed. When booking a flight from Ottawa to United Kingdom consider choosing Air Canada (67%), Aegean Airlines (67%) or Austrian Airlines (67%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from Ottawa to United Kingdom? While on average our users pay C$ 1,060, our data indicates the cheapest price to be C$ 487. The most popular route (Ottawa - London Heathrow), is priced around C$ 614.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Ottawa to United Kingdom (average of C$ 937). Flying from Ottawa to United Kingdom in December is currently the most expensive (average of C$ 1,294). 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

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Alternative routes for Ottawa to United Kingdom

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

Discover the top 7 airlines that operate flights from Ottawa to United Kingdom. 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 629,999 searches. Data last updated 18 July 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 121AverageC$ 964FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air TransatCheapestC$ 686AverageC$ 1,394FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air FranceCheapestC$ 791AverageC$ 1,260FlexibilityNo cancel feeOn-time77%
Search Air France flights
Porter AirlinesCheapestC$ 846AverageC$ 1,129FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 892AverageC$ 1,230FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 904AverageC$ 1,173FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapestC$ 923AverageC$ 1,163FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

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

Cheapflights makes it easy to find Ottawa to United Kingdom flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights helps you find that perfect flight to United Kingdom from Ottawa by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ottawa to United Kingdom, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for Ottawa to United Kingdom flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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