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Cheap flights from London, ON to the United Kingdom from C$ 563

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
1 May — 8 May1
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 1 April 2026.

Wed 3/612:20 p.m.
YXU
-
LHR
2 stops17h 20m
United Airlines
Sun 7/64:40 p.m.
LHR
-
YXU
2 stops27h 18m
United Airlines
Deal found 29/3C$ 1,085
Sat 25/45:40 p.m.
YXU
-
LHR
2 stops32h 15m
United Airlines
Sat 2/52:10 p.m.
LHR
-
YXU
2 stops32h 23m
United Airlines
Deal found 28/3C$ 1,088
Mon 11/512:20 p.m.
YXU
-
LHR
2 stops17h 05m
United Airlines
Mon 18/512:15 p.m.
LHR
-
YXU
2 stops14h 23m
United Airlines
Deal found 27/3C$ 1,089
Tue 28/49:25 a.m.
YXU
-
LHR
2 stops42h 10m
Air Canada
Tue 5/58:45 a.m.
LHR
-
YXU
2 stops17h 53m
Air Canada
Deal found 31/3C$ 1,091
Tue 28/45:10 a.m.
YXU
-
LHR
2 stops20h 45m
United Airlines
Tue 5/58:00 a.m.
LHR
-
YXU
2 stops18h 38m
United Airlines
Deal found 31/3C$ 1,103
Thu 16/49:25 a.m.
YXU
-
LHR
2 stops16h 05m
Air Canada
Wed 29/42:10 p.m.
LHR
-
YXU
2 stops23h 34m
Air Canada
Deal found 31/3C$ 1,106
Thu 16/49:25 a.m.
YXU
-
LHR
2 stops16h 20m
Lufthansa
Wed 29/48:00 a.m.
LHR
-
YXU
2 stops29h 44m
Lufthansa
Deal found 29/3C$ 1,109
Sat 25/45:10 a.m.
YXU
-
LHR
1 stop23h 25m
Air Canada
Sat 2/56:00 a.m.
LHR
-
YXU
2 stops16h 33m
Air Canada
Deal found 28/3C$ 1,110
Wed 3/612:20 p.m.
YXU
-
MAN
2 stops17h 05m
Air Canada
Sun 7/69:00 a.m.
MAN
-
YXU
1 stop31h 43m
Air Canada
Deal found 29/3C$ 1,159
Fri 12/65:10 a.m.
YXU
-
EDI
1 stop21h 10m
Air Canada
Tue 16/69:00 a.m.
EDI
-
YXU
1 stop28h 53m
Air Canada
Deal found 28/3C$ 1,188
Mon 25/59:30 a.m.
YXU
-
EDI
1 stop16h 50m
Air Canada
Fri 29/59:40 a.m.
EDI
-
YXU
2 stops36h 53m
Air Canada
Deal found 31/3C$ 1,247
Tue 12/55:10 a.m.
YXU
-
EDI
2 stops21h 55m
Air Canada
Tue 19/59:40 a.m.
EDI
-
YXU
2 stops36h 53m
Air Canada
Deal found 28/3C$ 1,268

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 1 April 2026.

Round-trip from

C$ 1,085

One-way from

C$ 563

Popular in

August

Cheapest in

July

Average price

C$ 1,165
United Airlines
  • United Airlines
  • 3/6-7/6
  • 4 total stops
  • 44h 38m total
  • London to United Kingdom
Search Deals
15/6
  • 15/6
  • 3 total stops
  • 47h 45m total
  • London to United Kingdom
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 229 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 95 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 1 April 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

Wed 3/6

9:30 a.m.-6:55 a.m.

2 stops16h 25m

London Heathrow

Sun 7/6

4:40 p.m.-11:43 a.m.

2 stops24h 03m

C$ 1,085

LondonLondon

YXU - LHR

YXULHR

London

Wed 13/5

9:30 a.m.-5:55 a.m.

2 stops15h 25m

London Heathrow

Wed 20/5

4:40 p.m.-5:33 p.m.

2 stops29h 53m

C$ 1,085

LondonLondon

YXU - LHR

YXULHR

London

Sat 25/4

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

2 stops32h 15m

London Heathrow

Sat 2/5

2:10 p.m.-5:33 p.m.

2 stops32h 23m

C$ 1,088

LondonLondon

YXU - LHR

YXULHR

London

Mon 11/5

12:20 p.m.-10:25 a.m.

2 stops17h 05m

London Heathrow

Mon 18/5

12:15 p.m.-9:38 p.m.

2 stops14h 23m

C$ 1,089

LondonLondon

YXU - LHR

YXULHR

London

Tue 28/4

5:10 a.m.-6:55 a.m.

2 stops20h 45m

London Heathrow

Tue 5/5

8:00 a.m.-9:38 p.m.

2 stops18h 38m

C$ 1,103

LondonLondon

YXU - LHR

YXULHR

London

Thu 16/4

9:25 a.m.-6:30 a.m.

2 stops16h 05m

London Heathrow

Wed 29/4

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

2 stops23h 34m

C$ 1,106

LondonLondon

YXU - LHR

YXULHR

London

Thu 16/4

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

2 stops16h 20m

London Heathrow

Wed 29/4

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

2 stops29h 44m

C$ 1,109

LondonLondon

YXU - LHR

YXULHR

London

Fri 15/5

6:10 p.m.-6:35 a.m.

1 stop31h 25m

London Heathrow

Fri 22/5

2:10 p.m.-9:38 p.m.

1 stop12h 28m

C$ 1,117

LondonManchester

YXU - MAN

YXUMAN

London

Wed 3/6

12:20 p.m.-10:25 a.m.

2 stops17h 05m

Manchester

Sun 7/6

9:00 a.m.-11:43 a.m.

1 stop31h 43m

C$ 1,159

LondonEdinburgh

YXU - EDI

YXUEDI

London

Fri 12/6

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

1 stop21h 10m

Edinburgh Turnhouse

Tue 16/6

9:00 a.m.-8:53 a.m.

1 stop28h 53m

C$ 1,188

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/3

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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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$ 61). Flying from London, Ontario to United Kingdom in March is currently the most expensive (average of C$ 692). 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 1 April 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
10,872 reviews
Check prices

Crew

7.8

Entertainment

6.8

Food

6.3

Overall

7.1

Comfort

7.1

Boarding

7.3

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
10,872 reviews
Air Canada
7.1
Good
10,872 reviews
Check prices

Crew

7.8

Entertainment

6.8

Food

6.3

Overall

7.1

Comfort

7.1

Boarding

7.3

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 16h 25m. 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 - Glasgow Intl 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, February is the cheapest month in which you can book a flight from London, Ontario to United Kingdom (average of C$ 61). Flying from London, Ontario to United Kingdom in March is currently the most expensive (average of C$ 692). 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 1 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 873AverageC$ 1,240FlexibilityNo 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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