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Cheap flights from London, ON to the United Kingdom from C$ 632

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
9 Apr — 16 Apr1
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 10 March 2026.

Sun 19/45:10 a.m.
YXU
-
LHR
2 stops20h 35m
United Airlines
Sun 26/44:40 p.m.
LHR
-
YXU
2 stops29h 24m
United Airlines
Deal found 5/3C$ 1,022
Tue 21/45:10 a.m.
YXU
-
LHR
2 stops20h 35m
United Airlines
Tue 28/44:40 p.m.
LHR
-
YXU
2 stops21h 04m
United Airlines
Deal found 7/3C$ 1,023
Sat 2/512:20 p.m.
YXU
-
LHR
2 stops15h 10m
United Airlines
Wed 6/512:00 p.m.
LHR
-
YXU
2 stops14h 38m
United Airlines
Deal found 6/3C$ 1,024
Thu 23/45:10 a.m.
YXU
-
LHR
2 stops20h 35m
Lufthansa
Thu 30/411:05 a.m.
LHR
-
YXU
2 stops26h 48m
Lufthansa
Deal found 9/3C$ 1,043
Mon 20/49:25 a.m.
YXU
-
STN
3 stops24h 40m
Multiple Airlines
Mon 27/49:05 a.m.
STN
-
YXU
3 stops28h 39m
Multiple Airlines
Deal found 6/3C$ 1,072
Thu 23/49:25 a.m.
YXU
-
LHR
2 stops16h 30m
United Airlines
Thu 30/42:10 p.m.
LHR
-
YXU
2 stops23h 43m
United Airlines
Deal found 9/3C$ 1,079
Sun 19/45:40 p.m.
YXU
-
LHR
2 stops22h 20m
Air Canada
Sun 26/46:00 a.m.
LHR
-
YXU
2 stops20h 19m
Air Canada
Deal found 5/3C$ 1,083
Tue 21/49:25 a.m.
YXU
-
LHR
2 stops31h 00m
Multiple Airlines
Tue 28/48:45 a.m.
LHR
-
YXU
2 stops17h 34m
Multiple Airlines
Deal found 7/3C$ 1,088
Thu 23/45:40 p.m.
YXU
-
LHR
1 stop9h 55m
Air Canada
Thu 30/48:45 a.m.
LHR
-
YXU
2 stops17h 34m
Air Canada
Deal found 8/3C$ 1,099
Tue 21/49:25 a.m.
YXU
-
LHR
1 stop16h 10m
Air Canada
Tue 28/46:00 a.m.
LHR
-
YXU
2 stops16h 04m
Air Canada
Deal found 7/3C$ 1,102
Mon 11/512:20 p.m.
YXU
-
EDI
2 stops14h 45m
Air Canada
Fri 15/59:40 a.m.
EDI
-
YXU
2 stops28h 13m
Air Canada
Deal found 5/3C$ 1,152
Mon 11/59:30 a.m.
YXU
-
EDI
2 stops20h 05m
United Airlines
Fri 15/59:40 a.m.
EDI
-
YXU
2 stops16h 58m
United Airlines
Deal found 8/3C$ 1,160

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 10 March 2026.

Round-trip from

C$ 1,022

One-way from

C$ 632

Popular in

August

Cheapest in

July

Average price

C$ 904
United Airlines
  • United Airlines
  • 19/4-26/4
  • 4 total stops
  • 49h 59m total
  • London to United Kingdom
Search Deals
United Airlines
  • United Airlines
  • 19/4
  • 2 total stops
  • 20h 35m total
  • London to United Kingdom
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 218 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 90 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 10 March 2026.
Use the filters below to find and compare flights from London to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonLondon

YXU - LHR

YXULHR

London

Sat 18/4

5:10 a.m.-6:45 a.m.

2 stops20h 35m

London Heathrow

Sat 25/4

8:00 a.m.-5:04 p.m.

2 stops38h 04m

C$ 1,022

LondonLondon

YXU - LHR

YXULHR

London

Mon 20/4

9:25 a.m.-11:55 a.m.

2 stops21h 30m

London Heathrow

Mon 27/4

8:00 a.m.-8:44 a.m.

2 stops29h 44m

C$ 1,022

LondonLondon

YXU - LHR

YXULHR

London

Sun 19/4

5:10 a.m.-6:45 a.m.

2 stops20h 35m

London Heathrow

Sun 26/4

4:40 p.m.-5:04 p.m.

2 stops29h 24m

C$ 1,022

LondonLondon

YXU - LHR

YXULHR

London

Tue 21/4

5:10 a.m.-6:45 a.m.

2 stops20h 35m

London Heathrow

Tue 28/4

4:40 p.m.-8:44 a.m.

2 stops21h 04m

C$ 1,023

LondonLondon

YXU - LHR

YXULHR

London

Sat 2/5

12:20 p.m.-8:30 a.m.

2 stops15h 10m

London Heathrow

Wed 6/5

12:00 p.m.-9:38 p.m.

2 stops14h 38m

C$ 1,024

LondonLondon

YXU - LHR

YXULHR

London

Mon 6/4

5:40 p.m.-6:45 a.m.

2 stops32h 05m

London Heathrow

Mon 13/4

4:40 p.m.-5:04 p.m.

2 stops29h 24m

C$ 1,029

LondonLondon

YXU - LHR

YXULHR

London

Wed 22/4

9:25 a.m.-6:45 a.m.

2 stops16h 20m

London Heathrow

Wed 29/4

8:00 a.m.-9:19 p.m.

2 stops18h 19m

C$ 1,029

LondonLondon

YXU - LHR

YXULHR

London

Wed 13/5

9:30 a.m.-7:15 a.m.

2 stops16h 45m

London Heathrow

Mon 18/5

10:25 a.m.-9:38 p.m.

2 stops16h 13m

C$ 1,029

LondonLondon

YXU - LHR

YXULHR

London

Sun 5/4

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

2 stops12h 00m

London Heathrow

Sun 12/4

2:10 p.m.-8:44 a.m.

2 stops23h 34m

C$ 1,029

LondonLondon

YXU - STN

YXUSTN

London

Mon 20/4

9:25 a.m.-3:05 p.m.

3 stops24h 40m

London Stansted

Mon 27/4

9:05 a.m.-8:44 a.m.

3 stops28h 39m

C$ 1,073

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/3

Showing 1-10 of 59 resultsSorted by cheapest first
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6

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, February is the cheapest month in which you can book a flight from London, Ontario to United Kingdom (average of C$ 60). Flying from London, Ontario to United Kingdom in January 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.

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 March 2026.
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
10,800 reviews
Check prices

Crew

7.8

Comfort

7.1

Food

6.3

Overall

7.1

Boarding

7.3

Entertainment

6.8

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.
Air Canada
7.1
Good
10,800 reviews
Air Canada
7.1
Good
10,800 reviews
Check prices

Crew

7.8

Comfort

7.1

Food

6.3

Overall

7.1

Boarding

7.3

Entertainment

6.8

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.

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 20h 35m. Fly via United Airlines, 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 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, February is the cheapest month in which you can book a flight from London, Ontario to United Kingdom (average of C$ 60). Flying from London, Ontario to United Kingdom in January 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

Browse thousands of different options on Cheapflights for your next trip

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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 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 850AverageC$ 1,208FlexibilityNo 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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