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Cheap flights from London, ON to the United Kingdom from C$ 382

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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
27 Aug — 3 Sep1
1 adult

Cheap 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 22 August 2025.

Round-trip from

C$ 804

One-way from

C$ 382

Popular in

December

Cheapest in

May

Average price

C$ 1,425
Air Canada
  • Air Canada
  • 5/10-12/10
  • 4 total stops
  • 33h 22m total
  • London to United Kingdom
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4/10
  • 4/10
  • 2 total stops
  • 46h 30m total
  • London to United Kingdom
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 188 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 70 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from London to United Kingdom

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 22 August 2025.

Sun 5/103:40 p.m.YXU - LHR
2 stops12h 55mAir Canada
Sun 12/106:00 a.m.LHR - YXU
2 stops20h 27mAir Canada
Deal found 21/8C$ 804
Sat 4/103:40 p.m.YXU - LHR
2 stops11h 55mAir Canada
Sat 11/106:00 a.m.LHR - YXU
2 stops20h 27mAir Canada
Deal found 20/8C$ 806
Wed 1/103:40 p.m.YXU - LHR
2 stops12h 55mAir Canada
Tue 14/106:00 a.m.LHR - YXU
2 stops20h 27mAir Canada
Deal found 21/8C$ 843
Wed 27/86:15 a.m.YXU - EDI
1 stop20h 05mAir Canada
Wed 10/99:00 a.m.EDI - YXU
1 stop17h 29mAir Canada
Deal found 20/8C$ 1,100
Tue 4/119:25 a.m.YXU - EDI
2 stops17h 30mAir Canada
Tue 2/129:25 a.m.EDI - YXU
2 stops16h 56mAir Canada
Deal found 20/8C$ 1,118
Sat 4/106:00 a.m.YXU - LGW
2 stops23h 45mMultiple Airlines
Sat 11/1012:40 p.m.LGW - YXU
2 stops21h 32mMultiple Airlines
Deal found 20/8C$ 1,157
Wed 27/86:15 a.m.YXU - EDI
2 stops23h 20mUnited Airlines
Wed 10/911:30 a.m.EDI - YXU
2 stops26h 49mUnited Airlines
Deal found 20/8C$ 1,167
Wed 17/96:00 a.m.YXU - STN
2 stops28h 10mMultiple Airlines
Wed 24/910:00 p.m.STN - YXU
3 stops36h 12mMultiple Airlines
Deal found 20/8C$ 1,212
Fri 10/103:40 p.m.YXU - EDI
2 stops37h 55mUnited Airlines
Sat 18/109:40 a.m.EDI - YXU
2 stops16h 47mUnited Airlines
Deal found 21/8C$ 1,221
Sun 5/103:40 p.m.YXU - EDI
1 stop10h 40mMultiple Airlines
Sun 12/107:20 p.m.EDI - YXU
2 stops31h 07mMultiple Airlines
Deal found 21/8C$ 1,225
Sun 5/103:40 p.m.YXU - EDI
1 stop10h 40mAir Canada
Sun 12/109:00 a.m.EDI - YXU
1 stop29h 17mAir Canada
Deal found 21/8C$ 1,233
Sun 5/103:40 p.m.YXU - EDI
2 stops22h 15mSWISS
Sun 12/107:20 p.m.EDI - YXU
2 stops31h 07mSWISS
Deal found 21/8C$ 1,239

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 22 August 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

Sun 5/10

3:40 p.m.-9:35 a.m.

2 stops12h 55m

London Heathrow

Sun 12/10

6:00 a.m.-9:27 p.m.

2 stops20h 27m

C$ 804

LondonLondon

YXU - LHR

YXULHR

London

Sat 4/10

3:40 p.m.-8:35 a.m.

2 stops11h 55m

London Heathrow

Sat 11/10

6:00 a.m.-9:27 p.m.

2 stops20h 27m

C$ 806

LondonLondon

YXU - LHR

YXULHR

London

Sun 5/10

3:40 p.m.-6:35 a.m.

1 stop9h 55m

London Heathrow

Sun 12/10

6:00 a.m.-9:27 p.m.

2 stops20h 27m

C$ 808

LondonLondon

YXU - LHR

YXULHR

London

Wed 1/10

3:40 p.m.-9:35 a.m.

2 stops12h 55m

London Heathrow

Tue 14/10

6:00 a.m.-9:27 p.m.

2 stops20h 27m

C$ 843

LondonEdinburgh

YXU - EDI

YXUEDI

London

Tue 4/11

9:25 a.m.-7:55 a.m.

2 stops17h 30m

Edinburgh Turnhouse

Tue 2/12

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

2 stops16h 56m

C$ 1,118

LondonLondon

YXU - LGW

YXULGW

London

Sat 4/10

6:00 a.m.-10:45 a.m.

2 stops23h 45m

London Gatwick

Sat 11/10

12:40 p.m.-5:12 a.m.

2 stops21h 32m

C$ 1,157

LondonLondon

YXU - STN

YXUSTN

London

Wed 17/9

6:00 a.m.-3:10 p.m.

2 stops28h 10m

London Stansted

Wed 24/9

10:00 p.m.-5:12 a.m.

3 stops36h 12m

C$ 1,212

LondonEdinburgh

YXU - EDI

YXUEDI

London

Fri 10/10

3:40 p.m.-10:35 a.m.

2 stops37h 55m

Edinburgh Turnhouse

Sat 18/10

9:40 a.m.-9:27 p.m.

2 stops16h 47m

C$ 1,221

LondonEdinburgh

YXU - EDI

YXUEDI

London

Sun 5/10

3:40 p.m.-7:20 a.m.

1 stop10h 40m

Edinburgh Turnhouse

Sun 12/10

7:20 p.m.-9:27 p.m.

2 stops31h 07m

C$ 1,225

LondonEdinburgh

YXU - EDI

YXUEDI

London

Sun 5/10

3:40 p.m.-7:20 a.m.

1 stop10h 40m

Edinburgh Turnhouse

Sun 12/10

9:00 a.m.-9:17 a.m.

1 stop29h 17m

C$ 1,233

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/8

Showing 1-10 of 47 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, January is the cheapest month in which you can book a flight from London, Ontario to United Kingdom (average of C$ 560). Flying from London, Ontario to United Kingdom in July is currently the most expensive (average of C$ 856). 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 22 August 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London, Ontario to United Kingdom as you normally would.

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 22 August 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
10,000 reviews
Check prices

Entertainment

6.8

Comfort

7.1

Food

6.3

Boarding

7.3

Crew

7.8

Overall

7.1

Reviews

1 / 20
8.0
Excellent

Jadi-Ann,Jun 2025

YYZ - KIN

The flight was smooth with minor turbulence. The staff was courteous. Since I have an aeroplan account I was able to use the inflight wifi. I wanted extra space and the window seat and I had to pay for that. At first, I was okay with that, however, I felt that it was the same distance between for everyone. Maybe I could be wrong.
Air Canada
7.1
Good
10,000 reviews
Air Canada
7.1
Good
10,000 reviews
Check prices

Entertainment

6.8

Comfort

7.1

Food

6.3

Boarding

7.3

Crew

7.8

Overall

7.1

Reviews

1 / 20
8.0
Excellent

Jadi-Ann,Jun 2025

YYZ - KIN

The flight was smooth with minor turbulence. The staff was courteous. Since I have an aeroplan account I was able to use the inflight wifi. I wanted extra space and the window seat and I had to pay for that. At first, I was okay with that, however, I felt that it was the same distance between for everyone. Maybe I could be wrong.

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 55m. Fly via Air Canada, United Airlines, or SWISS 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 - 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, January is the cheapest month in which you can book a flight from London, Ontario to United Kingdom (average of C$ 560). Flying from London, Ontario to United Kingdom in July is currently the most expensive (average of C$ 856). 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 22 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,000AverageC$ 1,247FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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How does Cheapflights help users find flights from London to United Kingdom?

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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?

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