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Cheap flights from London, ON to the United Kingdom from C$ 521

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
17 Sep — 24 Sep1
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 18 August 2026.

Thu 1/103:30 p.m. -
2 stops24h 50m
Thu 8/106:30 a.m. -
2 stops31h 50m
Deal found 17/8C$ 937
Mon 28/93:30 p.m. -
1 stop10h 50m
Mon 5/109:00 a.m. -
1 stop13h 45m
Deal found 14/8C$ 964
Wed 30/96:20 p.m. -
1 stop31h 10m
Wed 7/109:00 a.m. -
1 stop29h 20m
Deal found 16/8C$ 979
Thu 1/105:40 a.m. -
1 stop19h 50m
Thu 8/106:05 a.m. -
2 stops16h 40m
Deal found 17/8C$ 1,001
Mon 19/103:30 p.m. -
1 stop10h 50m
Fri 23/109:00 a.m. -
1 stop13h 45m
Deal found 13/8C$ 1,008
Thu 1/106:20 p.m. -
2 stops13h 30m
Thu 8/106:00 a.m. -
2 stops32h 20m
Deal found 17/8C$ 1,009
Sun 23/85:40 a.m. -
1 stop20h 40m
Fri 28/89:00 a.m. -
1 stop10h 50m
Deal found 13/8C$ 1,009
Wed 16/910:05 a.m. -
2 stops28h 10m
Tue 22/97:55 a.m. -
2 stops14h 48m
Deal found 17/8C$ 1,044
Wed 16/96:20 p.m. -
2 stops21h 05m
Tue 22/96:05 a.m. -
2 stops20h 35m
Deal found 17/8C$ 1,050
Sun 27/96:20 p.m. -
2 stops31h 25m
Sun 4/107:45 a.m. -
2 stops18h 55m
Deal found 13/8C$ 1,083
Fri 9/106:20 p.m. -
2 stops22h 05m
Tue 13/1011:05 a.m. -
2 stops15h 35m
Deal found 12/8C$ 1,084
Sat 12/95:40 a.m. -
2 stops19h 15m
Sat 19/97:45 a.m. -
2 stops14h 58m
Deal found 15/8C$ 1,087

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 18 August 2026.

Round-trip from

C$ 937

One-way from

C$ 521
1/10-8/10
  • 1/10-8/10
  • 4 total stops
  • 56h 40m total
  • London to United Kingdom
Search Deals
1/10
  • 1/10
  • 3 total stops
  • 46h 40m total
  • London to United Kingdom
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 18 August 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 London - STN London Stansted

YXUSTN

London

Thu 1/10

3:30 p.m.-9:20 p.m.

2 stops24h 50m

London Stansted

Thu 8/10

6:30 a.m.-9:20 a.m.

2 stops31h 50m

C$ 937

LondonManchester

YXU London - MAN Manchester

YXUMAN

London

Wed 30/9

6:20 p.m.-6:30 a.m.

1 stop31h 10m

Manchester

Wed 7/10

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

1 stop29h 20m

C$ 979
Quickest round-trip

LondonEdinburgh

YXU London - EDI Edinburgh Turnhouse

YXUEDI

London

Mon 19/10

3:30 p.m.-7:20 a.m.

1 stop10h 50m

Edinburgh Turnhouse

Fri 23/10

9:00 a.m.-5:45 p.m.

1 stop13h 45m

C$ 1,008

LondonLondon

YXU London - STN London Stansted

YXUSTN

London

Wed 16/9

10:05 a.m.-7:15 p.m.

2 stops28h 10m

London Stansted

Tue 22/9

7:55 a.m.-5:43 p.m.

2 stops14h 48m

C$ 1,044

LondonLondon

YXU London - LGW London Gatwick

YXULGW

London

Wed 16/9

6:20 p.m.-8:25 p.m.

2 stops21h 05m

London Gatwick

Tue 22/9

6:05 a.m.-9:40 p.m.

2 stops20h 35m

C$ 1,050

LondonEdinburgh

YXU London - EDI Edinburgh Turnhouse

YXUEDI

London

Mon 28/9

5:40 a.m.-10:35 a.m.

2 stops23h 55m

Edinburgh Turnhouse

Mon 5/10

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

2 stops17h 00m

C$ 1,079

LondonEdinburgh

YXU London - EDI Edinburgh Turnhouse

YXUEDI

London

Mon 19/10

10:05 a.m.-10:35 a.m.

2 stops19h 30m

Edinburgh Turnhouse

Fri 23/10

12:30 p.m.-9:20 a.m.

2 stops25h 50m

C$ 1,080

LondonLondon

YXU London - LHR London Heathrow

YXULHR

London

Mon 28/9

10:05 a.m.-10:25 a.m.

2 stops19h 20m

London Heathrow

Mon 5/10

11:05 a.m.-9:40 p.m.

2 stops15h 35m

C$ 1,083

LondonLondon

YXU London - LHR London Heathrow

YXULHR

London

Sun 27/9

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

2 stops31h 25m

London Heathrow

Sun 4/10

7:45 a.m.-9:40 p.m.

2 stops18h 55m

C$ 1,083

LondonLondon

YXU London - LHR London Heathrow

YXULHR

London

Fri 9/10

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

2 stops20h 05m

London Heathrow

Tue 13/10

4:40 p.m.-2:55 p.m.

2 stops27h 15m

C$ 1,083

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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

No data available for this route at this time. Please check back soon.

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 15h 10m. Fly via Air Canada, United Airlines, or SWISS to get the fastest option. London, Ontario and United Kingdom are separated by a distance of 5874 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 - Edinburgh Turnhouse 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.

See more FAQs

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