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Cheap flights from London, ON to the United Kingdom from C$ 432

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
20 Jan — 27 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 21 December 2025.

Sun 28/125:10 a.m.YXU - LHR
2 stops23h 10mAir Canada
Thu 1/19:00 a.m.LHR - YXU
2 stops37h 05mAir Canada
Deal found 19/12C$ 1,712
Mon 22/125:10 a.m.YXU - LHR
2 stops19h 45mUnited Airlines
Mon 29/1210:25 a.m.LHR - YXU
2 stops27h 21mUnited Airlines
Deal found 21/12C$ 1,744
Mon 22/125:10 a.m.YXU - LHR
1 stop20h 20mAir Canada
Mon 29/126:00 p.m.LHR - YXU
1 stop19h 46mAir Canada
Deal found 21/12C$ 2,158
Mon 22/125:40 p.m.YXU - LHR
2 stops21h 55mLufthansa
Mon 29/126:00 p.m.LHR - YXU
1 stop28h 05mLufthansa
Deal found 21/12C$ 2,198
Sun 21/125:40 p.m.YXU - LHR
1 stop12h 40mLufthansa
Wed 24/124:30 p.m.LHR - YXU
2 stops29h 35mLufthansa
Deal found 19/12C$ 2,493
Sun 21/125:10 a.m.YXU - LHR
1 stop20h 20mAir Canada
Wed 24/1211:10 a.m.LHR - YXU
1 stop15h 11mAir Canada
Deal found 19/12C$ 2,668
Sun 21/125:40 p.m.YXU - LHR
2 stops19h 10mMultiple Airlines
Wed 24/127:30 p.m.LHR - YXU
3 stops26h 35mMultiple Airlines
Deal found 19/12C$ 3,179
Sun 28/129:25 a.m.YXU - LHR
2 stops30h 10mMultiple Airlines
Thu 1/15:10 p.m.LHR - YXU
3 stops28h 55mMultiple Airlines
Deal found 19/12C$ 3,256
Fri 26/125:40 p.m.YXU - LHR
1 stop12h 40mLufthansa
Sat 3/19:00 a.m.LHR - YXU
2 stops17h 21mLufthansa
Deal found 21/12C$ 3,604
Sun 28/125:40 p.m.YXU - LGW
2 stops19h 10mMultiple Airlines
Thu 1/16:25 a.m.LGW - YXU
2 stops31h 21mMultiple Airlines
Deal found 19/12C$ 3,997
Mon 22/125:40 p.m.YXU - LGW
2 stops19h 10mSWISS
Mon 29/126:40 p.m.LGW - YXU
2 stops31h 41mSWISS
Deal found 21/12C$ 4,085
Mon 22/129:25 a.m.YXU - LGW
3 stops21h 35mMultiple Airlines
Mon 29/126:40 p.m.LGW - YXU
2 stops31h 41mMultiple Airlines
Deal found 21/12C$ 6,685

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 21 December 2025.

Round-trip from

C$ 967

One-way from

C$ 432

Popular in

August

Cheapest in

July

Average price

C$ 1,588
Air Canada
  • Air Canada
  • 4/2-11/2
  • 3 total stops
  • 35h 01m total
  • London to United Kingdom
Search Deals
3/2
  • 3/2
  • 2 total stops
  • 39h 25m total
  • London to United Kingdom
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 184 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 89 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 21 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

Wed 4/2

9:50 a.m.-8:30 a.m.

1 stop17h 40m

London Heathrow

Wed 11/2

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

2 stops17h 21m

C$ 967

LondonLondon

YXU - LHR

YXULHR

London

Tue 3/2

9:50 a.m.-8:30 a.m.

1 stop17h 40m

London Heathrow

Tue 10/2

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

2 stops17h 21m

C$ 969

LondonLondon

YXU - LHR

YXULHR

London

Sun 22/2

5:40 p.m.-10:50 a.m.

2 stops12h 10m

London Heathrow

Thu 26/2

1:35 p.m.-8:46 a.m.

2 stops24h 11m

C$ 971

LondonLondon

YXU - LHR

YXULHR

London

Wed 4/2

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

2 stops20h 00m

London Heathrow

Wed 11/2

4:20 p.m.-8:46 a.m.

2 stops21h 26m

C$ 971

LondonLondon

YXU - LHR

YXULHR

London

Tue 3/2

9:50 a.m.-11:15 a.m.

2 stops20h 25m

London Heathrow

Tue 10/2

12:05 p.m.-9:21 p.m.

2 stops14h 16m

C$ 971

LondonLondon

YXU - LCY

YXULCY

London

Wed 4/2

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

2 stops19h 00m

London City

Wed 11/2

9:20 a.m.-9:21 p.m.

2 stops17h 01m

C$ 1,021

LondonLondon

YXU - LHR

YXULHR

London

Wed 6/5

6:10 p.m.-11:50 a.m.

1 stop12h 40m

London Heathrow

Sun 24/5

8:30 a.m.-5:33 p.m.

1 stop14h 03m

C$ 1,058

LondonLondon

YXU - LHR

YXULHR

London

Sat 10/1

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

1 stop31h 50m

London Heathrow

Sat 17/1

1:45 p.m.-9:20 p.m.

2 stops36h 35m

C$ 1,087

LondonManchester

YXU - MAN

YXUMAN

London

Sun 18/1

5:40 p.m.-8:20 a.m.

2 stops33h 40m

Manchester

Sun 25/1

6:45 p.m.-9:20 p.m.

2 stops31h 35m

C$ 1,108

LondonEdinburgh

YXU - EDI

YXUEDI

London

Wed 4/2

5:40 p.m.-6:55 p.m.

2 stops20h 15m

Edinburgh Turnhouse

Wed 11/2

9:25 a.m.-8:46 a.m.

2 stops28h 21m

C$ 1,138

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/12

Showing 1-10 of 25 results
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2
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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$ 105). Flying from London, Ontario to United Kingdom in November is currently the most expensive (average of C$ 672). 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 21 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 evening. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight in the afternoon.

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 21 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
10,551 reviews
Check prices

Entertainment

6.8

Overall

7.1

Crew

7.8

Boarding

7.3

Comfort

7.1

Food

6.3

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
10,551 reviews
Air Canada
7.1
Good
10,551 reviews
Check prices

Entertainment

6.8

Overall

7.1

Crew

7.8

Boarding

7.3

Comfort

7.1

Food

6.3

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 12h 10m. Fly via Air Canada, United Airlines, or Aer Lingus 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 Gatwick or London - Edinburgh Turnhouse, 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$ 105). Flying from London, Ontario to United Kingdom in November is currently the most expensive (average of C$ 672). 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 21 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 852AverageC$ 1,205FlexibilityNo 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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