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Cheap flights from London, ON to the United Kingdom from C$ 487

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
1 Jan — 8 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 2 December 2025.

Mon 8/125:40 p.m.YXU - LHR
1 stop12h 40mAir Canada
Mon 15/1211:10 a.m.LHR - YXU
1 stop26h 36mAir Canada
Deal found 1/12C$ 1,079
Tue 30/129:25 a.m.YXU - LHR
1 stop18h 05mAir Canada
Tue 6/19:00 a.m.LHR - YXU
2 stops28h 46mAir Canada
Deal found 2/12C$ 1,552
Tue 30/125:40 p.m.YXU - LHR
2 stops21h 55mMultiple Airlines
Tue 6/19:00 a.m.LHR - YXU
2 stops13h 05mMultiple Airlines
Deal found 2/12C$ 1,577
Mon 8/125:40 p.m.YXU - LHR
1 stop9h 50mLufthansa
Mon 15/128:30 a.m.LHR - YXU
2 stops17h 51mLufthansa
Deal found 1/12C$ 1,811
Mon 29/129:25 a.m.YXU - LHR
2 stops30h 10mAir Canada
Mon 5/16:00 p.m.LHR - YXU
1 stop19h 46mAir Canada
Deal found 1/12C$ 1,826
Sun 28/129:25 a.m.YXU - LHR
2 stops18h 55mAir Canada
Sun 4/11:25 p.m.LHR - YXU
2 stops24h 21mAir Canada
Deal found 30/11C$ 2,168
Mon 8/125:40 p.m.YXU - LCY
2 stops14h 15mMultiple Airlines
Mon 15/129:50 a.m.LCY - YXU
2 stops16h 31mMultiple Airlines
Deal found 1/12C$ 2,258
Tue 30/129:25 a.m.YXU - LGW
3 stops19h 50mMultiple Airlines
Tue 6/18:15 a.m.LGW - YXU
2 stops13h 50mMultiple Airlines
Deal found 2/12C$ 2,459
Mon 29/125:40 p.m.YXU - LGW
1 stop11h 05mMultiple Airlines
Mon 5/111:40 a.m.LGW - YXU
1 stop14h 40mMultiple Airlines
Deal found 1/12C$ 2,721
Tue 30/125:40 p.m.YXU - LCY
2 stops18h 25mMultiple Airlines
Tue 6/110:00 a.m.LCY - YXU
2 stops27h 46mMultiple Airlines
Deal found 2/12C$ 3,445
Mon 29/125:40 p.m.YXU - LCY
2 stops34h 05mMultiple Airlines
Mon 5/16:15 p.m.LCY - YXU
2 stops27h 50mMultiple Airlines
Deal found 1/12C$ 3,888
Sun 28/129:25 a.m.YXU - STN
3 stops21h 55mMultiple Airlines
Sun 4/16:15 a.m.STN - YXU
2 stops15h 50mMultiple Airlines
Deal found 30/11C$ 4,235

Find 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 2 December 2025.

Round-trip from

C$ 863

One-way from

C$ 487

Popular in

August

Cheapest in

July

Average price

C$ 1,664
Air Canada
  • Air Canada
  • 15/1-22/1
  • 4 total stops
  • 39h 16m total
  • London to United Kingdom
Search Deals
14/1
  • 14/1
  • 2 total stops
  • 39h 30m total
  • London to United Kingdom
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 189 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).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 2 December 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

Thu 15/1

5:40 p.m.-8:35 p.m.

2 stops21h 55m

London Heathrow

Thu 22/1

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

2 stops17h 21m

C$ 863

LondonLondon

YXU - LHR

YXULHR

London

Fri 16/1

5:40 p.m.-6:30 a.m.

1 stop31h 50m

London Heathrow

Fri 23/1

9:00 a.m.-9:20 p.m.

2 stops17h 20m

C$ 871

LondonLondon

YXU - LHR

YXULHR

London

Wed 14/1

5:40 p.m.-11:20 a.m.

1 stop12h 40m

London Heathrow

Wed 21/1

6:35 a.m.-5:05 p.m.

2 stops15h 30m

C$ 895

LondonLondon

YXU - LHR

YXULHR

London

Tue 10/2

5:40 p.m.-8:30 a.m.

1 stop9h 50m

London Heathrow

Thu 19/2

6:00 a.m.-5:05 p.m.

2 stops16h 05m

C$ 902

LondonLondon

YXU - LHR

YXULHR

London

Wed 14/1

8:10 p.m.-12:50 p.m.

1 stop35h 40m

London Heathrow

Wed 21/1

2:50 p.m.-6:34 a.m.

1 stop20h 44m

C$ 905

LondonLondon

YXU - LHR

YXULHR

London

Wed 14/1

9:50 a.m.-7:10 a.m.

2 stops16h 20m

London Heathrow

Wed 21/1

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

2 stops17h 21m

C$ 909

LondonEdinburgh

YXU - EDI

YXUEDI

London

Thu 30/4

5:10 a.m.-7:20 a.m.

1 stop21h 10m

Edinburgh Turnhouse

Fri 15/5

9:00 a.m.-9:27 p.m.

1 stop17h 27m

C$ 1,032

LondonLondon

YXU - LGW

YXULGW

London

Wed 14/1

8:10 p.m.-10:55 a.m.

3 stops33h 45m

London Gatwick

Wed 21/1

11:55 a.m.-6:34 a.m.

3 stops23h 39m

C$ 1,088

LondonManchester

YXU - MAN

YXUMAN

London

Wed 21/1

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

2 stops24h 00m

Manchester

Sun 25/1

6:25 a.m.-5:05 p.m.

2 stops15h 40m

C$ 1,152

LondonEdinburgh

YXU - EDI

YXUEDI

London

Wed 14/1

5:10 a.m.-7:55 a.m.

2 stops21h 45m

Edinburgh Turnhouse

Wed 21/1

9:25 a.m.-9:21 p.m.

2 stops16h 56m

C$ 1,155

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/12

Showing 1-10 of 48 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$ 106). Flying from London, Ontario to United Kingdom in November is currently the most expensive (average of C$ 685). 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 2 December 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 33% 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 2 December 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
10,496 reviews
Check prices

Entertainment

6.8

Comfort

7.1

Crew

7.8

Food

6.3

Overall

7.1

Boarding

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍
Air Canada
7.1
Good
10,496 reviews
Air Canada
7.1
Good
10,496 reviews
Check prices

Entertainment

6.8

Comfort

7.1

Crew

7.8

Food

6.3

Overall

7.1

Boarding

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍

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 21h 55m. 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 most popular routes from London, Ontario to United Kingdom?

    While some choose either London - London City or London - Birmingham, 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$ 106). Flying from London, Ontario to United Kingdom in November is currently the most expensive (average of C$ 685). 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 2 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 876AverageC$ 1,222FlexibilityNo 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?

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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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