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Cheap flights from Ottawa to the United Kingdom from C$ 364

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 17/1. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
19 Nov — 26 Nov1
1 adult
1 adult, Economy

Find 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 20 October 2025.

Sat 8/116:55 p.m.YOW - LGW
1 stop9h 50mAir Transat
Thu 13/1111:40 a.m.LGW - YOW
1 stop11h 44mAir Transat
Deal found 19/10C$ 859
Sun 16/1110:30 a.m.YOW - LHR
2 stops15h 40mMultiple Airlines
Sun 23/116:00 a.m.LHR - YOW
2 stops18h 18mMultiple Airlines
Deal found 19/10C$ 861
Mon 17/116:55 p.m.YOW - MAN
1 stop31h 15mAir Transat
Wed 26/118:40 a.m.MAN - YOW
1 stop13h 09mAir Transat
Deal found 19/10C$ 862
Sun 16/116:55 p.m.YOW - LGW
1 stop9h 50mAir Transat
Sun 23/1111:40 a.m.LGW - YOW
1 stop25h 44mAir Transat
Deal found 19/10C$ 863
Thu 20/1110:30 a.m.YOW - LHR
2 stops15h 40mMultiple Airlines
Mon 24/1111:10 a.m.LHR - YOW
2 stops16h 08mMultiple Airlines
Deal found 19/10C$ 865
Tue 2/122:05 p.m.YOW - LHR
2 stops12h 05mMultiple Airlines
Tue 9/129:00 a.m.LHR - YOW
2 stops13h 42mMultiple Airlines
Deal found 20/10C$ 866
Tue 18/113:05 p.m.YOW - LGW
1 stop13h 40mAir Transat
Tue 25/1111:40 a.m.LGW - YOW
1 stop11h 44mAir Transat
Deal found 19/10C$ 876
Thu 20/116:45 a.m.YOW - LGW
1 stop22h 00mAir Transat
Tue 25/1111:40 a.m.LGW - YOW
1 stop17h 59mAir Transat
Deal found 20/10C$ 879
Thu 20/113:05 p.m.YOW - LGW
1 stop13h 40mAir Transat
Mon 24/1111:40 a.m.LGW - YOW
1 stop11h 44mAir Transat
Deal found 19/10C$ 880
Mon 24/112:50 p.m.YOW - LHR
1 stop11h 20mMultiple Airlines
Tue 2/129:00 a.m.LHR - YOW
2 stops13h 42mMultiple Airlines
Deal found 18/10C$ 880
Sun 16/1110:30 a.m.YOW - LHR
2 stops15h 40mAir Canada
Sun 23/111:25 p.m.LHR - YOW
1 stop25h 17mAir Canada
Deal found 19/10C$ 883
Wed 3/129:55 p.m.YOW - LHR
Nonstop6h 25mMultiple Airlines
Wed 10/126:35 a.m.LHR - YOW
2 stops17h 03mMultiple Airlines
Deal found 19/10C$ 886

Cheap 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 20 October 2025.

Round-trip from

C$ 859

One-way from

C$ 364

Popular in

December

Cheapest in

February

Average price

C$ 1,006

Good round-trip deal

C$ 1,034 or less

Good one-way deal

C$ 986 or less
Air Transat
  • Air Transat
  • 8/11-13/11
  • 2 total stops
  • 21h 34m total
  • Ottawa to United Kingdom
Search Deals
17/1
  • 17/1
  • 1 total stop
  • 19h 35m total
  • Ottawa to United Kingdom
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 20 October 2025.
Use the filters below to find and compare flights from Ottawa to the United Kingdom that are best for you.

Fly from

Ottawa

Fly to

United Kingdom

Route

Depart

Return

Price

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 16/11

3:05 p.m.-9:45 a.m.

1 stop13h 40m

London Gatwick

Wed 19/11

11:40 a.m.-12:39 a.m.

1 stop17h 59m

C$ 859

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Tue 11/11

10:00 a.m.-9:45 a.m.

1 stop18h 45m

London Gatwick

Wed 19/11

11:40 a.m.-12:39 a.m.

1 stop17h 59m

C$ 859

OttawaManchester

YOW - MAN

YOWMAN

Ottawa

Mon 17/11

6:55 p.m.-7:10 a.m.

1 stop31h 15m

Manchester

Wed 26/11

8:40 a.m.-4:49 p.m.

1 stop13h 09m

C$ 862

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 2/3

6:55 p.m.-9:45 a.m.

1 stop9h 50m

London Gatwick

Fri 6/3

11:40 a.m.-8:25 a.m.

1 stop25h 45m

C$ 863

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sat 28/2

6:55 p.m.-9:45 a.m.

1 stop9h 50m

London Gatwick

Mon 9/3

11:40 a.m.-8:25 a.m.

1 stop24h 45m

C$ 863

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Sun 16/11

6:55 p.m.-9:45 a.m.

1 stop9h 50m

London Gatwick

Sun 23/11

11:40 a.m.-8:24 a.m.

1 stop25h 44m

C$ 863

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 2/12

2:05 p.m.-7:10 a.m.

2 stops12h 05m

London Heathrow

Tue 9/12

9:00 a.m.-5:42 p.m.

2 stops13h 42m

C$ 866

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 2/12

4:00 p.m.-7:10 a.m.

1 stop10h 10m

London Heathrow

Tue 9/12

9:00 a.m.-2:21 p.m.

1 stop10h 21m

C$ 894

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 9/11

9:55 p.m.-9:20 a.m.

Nonstop6h 25m

London Heathrow

Sun 16/11

9:00 a.m.-9:42 a.m.

2 stops29h 42m

C$ 905

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 3/12

5:45 a.m.-7:10 a.m.

1 stop20h 25m

London Heathrow

Sun 7/12

7:40 a.m.-6:38 p.m.

2 stops15h 58m

C$ 908

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/10

Showing 1-10 of 60 results
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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, December is the cheapest month in which you can book a flight from Ottawa to United Kingdom (average of C$ 132). Flying from Ottawa to United Kingdom in August is currently the most expensive (average of C$ 831). 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 20 October 2025.

A simple way to save on the total cost of your ticket is to fly from Ottawa to United Kingdom in the evening. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Ottawa to United Kingdom?

Use this chart to determine the cheapest time to fly round-trip from Ottawa to United Kingdom. Price data was last updated on 8 December 2024.

Travelers seeking maximum savings on their Ottawa to United Kingdom flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 20 October 2025.
Read reviews from past customers who have flown Porter Airlines,Air Transat, andAir France 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.
Porter Airlines
8.0
Very good
381 reviews
Check prices

Boarding

8.2

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
381 reviews
Porter Airlines
8.0
Very good
381 reviews
Check prices

Boarding

8.2

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Transat
7.8
Good
466 reviews
Porter Airlines
8.0
Very good
381 reviews
Check prices

Boarding

8.2

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air France
7.4
Good
1,475 reviews
Porter Airlines
8.0
Very good
381 reviews
Check prices

Boarding

8.2

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,334 reviews
Porter Airlines
8.0
Very good
381 reviews
Check prices

Boarding

8.2

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Lufthansa
6.8
Okay
7,506 reviews
Porter Airlines
8.0
Very good
381 reviews
Check prices

Boarding

8.2

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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, Air Canada, and Air France fly from Ottawa to United Kingdom in about 10h 10m. The time it takes to get you to your destination can typically vary by up to 3h 30m. There are 5343 km between Ottawa and United Kingdom. Both multi-stop and direct flights can be found to your destination and back.

  • 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 (74%), Aegean Airlines (74%) or Austrian Airlines (74%) 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$ 1,324, our data indicates the cheapest price to be C$ 653. The most popular route (Ottawa - London Heathrow), is priced around C$ 861.

  • 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, December is the cheapest month in which you can book a flight from Ottawa to United Kingdom (average of C$ 132). Flying from Ottawa to United Kingdom in August is currently the most expensive (average of C$ 831). 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Ottawa to United Kingdom

Discover the top 9 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 20 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapestC$ 693AverageC$ 1,135FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
LufthansaCheapestC$ 697AverageC$ 1,125FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Porter AirlinesCheapestC$ 723AverageC$ 1,209FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air FranceCheapestC$ 740AverageC$ 1,296FlexibilityNo cancel feeOn-time77%
Search Air France flights
Virgin AtlanticCheapestC$ 743AverageC$ 826FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
WestJetCheapestC$ 780AverageC$ 1,191FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 904AverageC$ 1,271FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 909AverageC$ 1,233FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
KLMCheapestC$ 1,200AverageC$ 1,493FlexibilityNo cancel feeOn-time75%
Search KLM 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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