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Cheap flights from London, ON to the United Kingdom from C$ 747

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 25/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
10 Dec — 17 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to United Kingdom

Keep the following information in mind while searching for London to United Kingdom flight deals. Data was last updated 10 November 2025.

Round-trip from

C$ 934

One-way from

C$ 747

Popular in

August

Cheapest in

July

Average price

C$ 1,083
Air Canada
  • Air Canada
  • 20/2-24/2
  • 3 total stops
  • 35h 26m total
  • London to United Kingdom
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WestJet
  • WestJet
  • 25/12
  • 1 total stop
  • 35h 40m total
  • London to United Kingdom
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 191 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 84 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from London to United Kingdom

Enter your travel dates to find the best prices.

Cheapest flights from London to United Kingdom
Explore the most affordable flight options available from London to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 November 2025.

Tue 9/129:25 a.m.YXU - LHR
2 stops16h 45mAir Canada
Tue 16/121:25 p.m.LHR - YXU
2 stops24h 21mAir Canada
Deal found 10/11C$ 1,042
Mon 8/125:40 p.m.YXU - LHR
1 stop12h 40mAir Canada
Mon 15/121:25 p.m.LHR - YXU
2 stops24h 21mAir Canada
Deal found 10/11C$ 1,045
Sun 7/125:40 p.m.YXU - LHR
1 stop31h 50mAir Canada
Sun 14/121:25 p.m.LHR - YXU
2 stops24h 21mAir Canada
Deal found 9/11C$ 1,095
Mon 17/115:40 p.m.YXU - EDI
2 stops33h 15mUnited Airlines
Mon 24/1112:30 p.m.EDI - YXU
2 stops25h 16mUnited Airlines
Deal found 10/11C$ 1,112
Sun 7/125:40 p.m.YXU - LHR
1 stop31h 50mMultiple Airlines
Sun 14/129:00 a.m.LHR - YXU
2 stops17h 21mMultiple Airlines
Deal found 9/11C$ 1,121
Wed 24/125:10 a.m.YXU - LHR
2 stops34h 25mAir Canada
Wed 31/121:25 p.m.LHR - YXU
2 stops24h 21mAir Canada
Deal found 9/11C$ 1,208
Sun 7/129:25 a.m.YXU - BHX
2 stops22h 10mMultiple Airlines
Sun 14/126:50 p.m.BHX - YXU
2 stops42h 56mMultiple Airlines
Deal found 9/11C$ 1,351
Mon 8/125:10 a.m.YXU - LGW
2 stops27h 05mMultiple Airlines
Mon 15/125:55 a.m.LGW - YXU
2 stops16h 10mMultiple Airlines
Deal found 10/11C$ 1,378
Mon 17/115:40 p.m.YXU - EDI
2 stops24h 05mLufthansa
Mon 24/116:05 a.m.EDI - YXU
3 stops20h 16mLufthansa
Deal found 10/11C$ 1,548
Mon 8/125:40 p.m.YXU - LCY
2 stops17h 55mMultiple Airlines
Mon 15/127:45 a.m.LCY - YXU
2 stops14h 20mMultiple Airlines
Deal found 10/11C$ 1,570
Mon 17/119:25 a.m.YXU - EDI
3 stops23h 40mMultiple Airlines
Mon 24/116:05 a.m.EDI - YXU
3 stops42h 07mMultiple Airlines
Deal found 10/11C$ 1,704
Sun 7/128:10 p.m.YXU - LGW
3 stops32h 35mMultiple Airlines
Sun 14/129:35 p.m.LGW - YXU
3 stops28h 46mMultiple Airlines
Deal found 9/11C$ 1,837

Cheapflights Fare Finder

 
Customize your flight search to find flights from London 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 10 November 2025.
Use the filters below to find and compare flights from London to the United Kingdom that are best for you.

Fly from

London

Fly to

United Kingdom

Route

Depart

Return

Price

LondonLondon

YXU - LHR

YXULHR

London

Fri 27/2

9:25 a.m.-9:20 a.m.

2 stops18h 55m

London Heathrow

Mon 2/3

1:45 p.m.-9:21 p.m.

2 stops36h 36m

C$ 938

LondonLondon

YXU - LHR

YXULHR

London

Fri 20/2

5:10 a.m.-11:50 a.m.

1 stop25h 40m

London Heathrow

Tue 24/2

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

2 stops17h 21m

C$ 938

LondonLondon

YXU - LHR

YXULHR

London

Fri 20/2

9:25 a.m.-7:10 a.m.

2 stops16h 45m

London Heathrow

Tue 24/2

7:40 a.m.-9:21 p.m.

2 stops18h 41m

C$ 941

LondonLondon

YXU - LHR

YXULHR

London

Mon 8/12

9:25 a.m.-7:10 a.m.

2 stops16h 45m

London Heathrow

Mon 15/12

11:10 a.m.-9:21 p.m.

1 stop15h 11m

C$ 1,039

LondonLondon

YXU - LCY

YXULCY

London

Fri 20/2

5:40 p.m.-4:40 p.m.

2 stops42h 00m

London City

Tue 24/2

6:15 p.m.-5:05 p.m.

2 stops51h 50m

C$ 1,094

LondonLondon

YXU - LHR

YXULHR

London

Wed 6/5

3:35 p.m.-10:00 a.m.

2 stops13h 25m

London Heathrow

Sun 24/5

12:05 p.m.-9:27 p.m.

2 stops14h 22m

C$ 1,098

LondonLondon

YXU - LHR

YXULHR

London

Sun 5/4

9:25 a.m.-9:00 p.m.

2 stops30h 35m

London Heathrow

Sun 12/4

6:00 a.m.-9:18 p.m.

2 stops20h 18m

C$ 1,101

LondonManchester

YXU - MAN

YXUMAN

London

Mon 2/3

9:25 a.m.-5:00 p.m.

2 stops26h 35m

Manchester

Fri 6/3

6:05 a.m.-5:05 p.m.

2 stops16h 00m

C$ 1,256

LondonBirmingham

YXU - BHX

YXUBHX

London

Sun 7/12

9:25 a.m.-12:35 p.m.

2 stops22h 10m

Birmingham

Sun 14/12

6:50 p.m.-8:46 a.m.

2 stops42h 56m

C$ 1,351

LondonLondon

YXU - LGW

YXULGW

London

Mon 8/12

9:25 a.m.-1:15 p.m.

2 stops22h 50m

London Gatwick

Mon 15/12

5:55 a.m.-5:05 p.m.

2 stops16h 10m

C$ 1,365

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 39 results
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Best time to book a flight from London to United Kingdom

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

What is the cheapest month to book a flight from London, Ontario to United Kingdom?

Currently, May is the cheapest month in which you can book a flight from London, Ontario to United Kingdom (average of C$ 107). Flying from London, Ontario to United Kingdom in November is currently the most expensive (average of C$ 684). 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 YXU to GB?

Find hourly flight availability from London 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 10 November 2025.

A simple way to save on the total cost of your ticket is to fly from London, Ontario to United Kingdom in the morning. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight at noon.

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 10 November 2025.
Get a feel of what it's like to fly with Air Canada from London to the United Kingdom by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,437 reviews
Check prices

Entertainment

6.8

Overall

7.1

Comfort

7.1

Food

6.3

Boarding

7.3

Crew

7.8

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.
Air Canada
7.1
Good
10,437 reviews
Air Canada
7.1
Good
10,437 reviews
Check prices

Entertainment

6.8

Overall

7.1

Comfort

7.1

Food

6.3

Boarding

7.3

Crew

7.8

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.

Related info for your journey

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

    London (YXU) is the airport you will fly out of if you book a flight from London to United Kingdom. It is only a 8.6 km journey to London (YXU) from London’s city centre.

  • How long is the flight from London, Ontario to United Kingdom?

    There are many flights that can get you from London, Ontario to United Kingdom in 16h 45m. Fly via Air Canada or Lufthansa to get the fastest option. London, Ontario and United Kingdom are separated by a distance of 5844 km. 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 London, Ontario to United Kingdom one-way?

    One-way options have recently been found by users for as low as C$ 897 on WestJet. Other airlines that offer cheap prices include Air Canada from C$ 1,093 and Lufthansa from C$ 1,171 one-way.

  • What are the most popular routes from London, Ontario to United Kingdom?

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London 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 London, Ontario to United Kingdom?

    Currently, May is the cheapest month in which you can book a flight from London, Ontario to United Kingdom (average of C$ 107). Flying from London, Ontario to United Kingdom in November is currently the most expensive (average of C$ 684). 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 London to United Kingdom

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

Discover the top airline that operate flights from London 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 10 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 880AverageC$ 1,250FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 London to United Kingdom?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to United Kingdom from London today with Cheapflights!

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

Millions of users choose and trust Cheapflights to book the best flight deals from London to United Kingdom for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from London 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 London 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 London to United Kingdom become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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