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Cheap flights from the United Kingdom to London, Ontario from £362

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 14/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YXU
26 Jul — 2 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to London

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to London
Explore the most affordable flight options available from United Kingdom to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 June 2026.

Wed 14/1008:40
LHR
-
YXU
2 stops18h 00m
Air Canada
Sun 18/1018:20
YXU
-
LHR
1 stop10h 15m
Air Canada
Deal found 24/6£523
Wed 7/1009:00
MAN
-
YXU
1 stop29h 20m
Air Canada
Sun 11/1018:20
YXU
-
MAN
2 stops35h 05m
Air Canada
Deal found 25/6£537
Thu 2/708:30
LHR
-
YXU
1 stop14h 15m
Multiple Airlines
Mon 6/721:10
YXU
-
LHR
1 stop9h 40m
Multiple Airlines
Deal found 22/6£542
Thu 2/712:40
LHR
-
YXU
2 stops14h 00m
Air Canada
Mon 6/721:10
YXU
-
LHR
2 stops18h 50m
Air Canada
Deal found 22/6£544
Fri 11/912:40
LHR
-
YXU
2 stops14h 00m
Air Canada
Mon 21/915:30
YXU
-
LHR
2 stops24h 30m
Air Canada
Deal found 22/6£547
Fri 11/909:25
LGW
-
YXU
2 stops17h 15m
Multiple Airlines
Mon 21/915:30
YXU
-
LGW
2 stops35h 55m
Multiple Airlines
Deal found 22/6£548
Wed 1/712:40
LHR
-
YXU
2 stops14h 00m
Air Canada
Fri 10/721:10
YXU
-
LHR
1 stop28h 25m
Air Canada
Deal found 24/6£553
Thu 8/1014:00
GLA
-
YXU
2 stops24h 20m
Air Canada
Mon 12/1005:40
YXU
-
GLA
2 stops23h 30m
Air Canada
Deal found 24/6£667
Wed 16/914:00
GLA
-
YXU
2 stops32h 43m
Air Canada
Sun 20/910:05
YXU
-
GLA
2 stops19h 05m
Air Canada
Deal found 21/6£670
Wed 19/822:45
STN
-
YXU
3 stops35h 35m
Multiple Airlines
Tue 25/814:40
YXU
-
STN
3 stops26h 40m
Multiple Airlines
Deal found 21/6£680
Thu 6/807:20
STN
-
YXU
2 stops15h 22m
Multiple Airlines
Thu 13/818:20
YXU
-
STN
2 stops19h 55m
Multiple Airlines
Deal found 22/6£736
Thu 6/807:25
LGW
-
YXU
2 stops15h 17m
Multiple Airlines
Thu 13/818:20
YXU
-
LGW
2 stops20h 40m
Multiple Airlines
Deal found 22/6£740

Find flight deals from United Kingdom to London

Keep the following information in mind while searching for United Kingdom to London flight deals. Data was last updated 26 June 2026.

Round-trip from

£523

One-way from

£362

Popular in

August

Cheapest in

January

Average price

£670
Air Canada
  • Air Canada
  • 14/10-18/10
  • 4 total stops
  • 37h 55m total
  • United Kingdom to London
Search Deals
14/9
  • 14/9
  • 3 total stops
  • 49h 55m total
  • United Kingdom to London
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£60 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to London 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 858,174 searches. Data last updated 26 June 2026.
Use the filters below to find and compare flights from the United Kingdom to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Wed 14/10

08:40-21:40

2 stops18h 00m

London

Sun 18/10

18:20-09:35

1 stop10h 15m

£523

ManchesterLondon

MAN - YXU

MANYXU

Manchester

Wed 7/10

09:00-14:55

1 stop10h 55m

London

Sun 11/10

18:20-10:25

2 stops35h 05m

£537

LondonLondon

LGW - YXU

LGWYXU

London Gatwick

Fri 11/9

09:25-21:40

2 stops17h 15m

London

Mon 21/9

15:30-08:25

2 stops35h 55m

£548

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Fri 11/9

17:40-09:20

1 stop20h 40m

London

Mon 21/9

18:20-08:35

1 stop9h 15m

£550

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Fri 21/8

12:40-21:40

2 stops14h 00m

London

Mon 31/8

18:20-21:00

2 stops21h 40m

£648
Fastest return journey

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sat 29/8

08:30-14:50

1 stop11h 20m

London

Mon 31/8

18:20-08:35

1 stop9h 15m

£657

GlasgowLondon

GLA - YXU

GLAYXU

Glasgow Intl

Thu 8/10

14:00-09:20

2 stops24h 20m

London

Mon 12/10

05:40-10:10

2 stops23h 30m

£667

GlasgowLondon

GLA - YXU

GLAYXU

Glasgow Intl

Wed 16/9

14:00-17:43

2 stops32h 43m

London

Sun 20/9

10:05-10:10

2 stops19h 05m

£670

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sat 29/8

08:30-21:40

1 stop18h 10m

London

Mon 31/8

15:30-11:50

1 stop15h 20m

£675

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Fri 24/7

06:00-20:32

2 stops19h 32m

London

Tue 4/8

18:20-21:00

2 stops21h 40m

£719

Flights are sorted by cheapest return flights first.

Deals found on 23/6

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from United Kingdom to London

Have a flexible travel schedule? Discover the best time to fly to London from United Kingdom with our price prediction graph.
Estimated return 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 the United Kingdom to London

What is the cheapest month to book a flight from United Kingdom to London, Ontario?

Currently, April is the cheapest month in which you can book a flight from United Kingdom to London, Ontario (average of £436). Flying from United Kingdom to London, Ontario in August is currently the most expensive (average of £699). 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 London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 26 June 2026.
Read reviews from past customers who have flown with Air Canada from the United Kingdom to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
11,254 reviews
Check prices

Overall

7.1

Boarding

7.3

Crew

7.8

Entertainment

6.8

Comfort

7.1

Food

6.3

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.
Air Canada
7.1
Good
11,254 reviews
Air Canada
7.1
Good
11,254 reviews
Check prices

Overall

7.1

Boarding

7.3

Crew

7.8

Entertainment

6.8

Comfort

7.1

Food

6.3

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to London. 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 into for flights to London from United Kingdom?

    Located just 5.3 mi from the city center, London (YXU) is the airport most travelers will use when flying to London from United Kingdom.

  • How long is the flight from United Kingdom to London, Ontario?

    There are many flights that can get you from United Kingdom to London, Ontario in 16h 17m. Fly via Air Canada or Lufthansa to get the fastest option. Airlines will cover a distance of 3650 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from United Kingdom to London, Ontario?

    Most travelers choose London Heathrow - London, London Stansted - London or London Gatwick - London when deciding on the best route from United Kingdom to London, Ontario.

  • Can I find deals for flights from United Kingdom to London that include hotel bookings?

    Yes. In addition to deals on United Kingdom to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to London.

  • Can I find deals for business class flights from United Kingdom to London?

    Yes. Cheapflights offers flight deals from United Kingdom to London 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 United Kingdom to London, Ontario?

    Currently, April is the cheapest month in which you can book a flight from United Kingdom to London, Ontario (average of £436). Flying from United Kingdom to London, Ontario in August is currently the most expensive (average of £699). 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 United Kingdom to London

See prices for flight routes from nearby airports that may be better suited for you.
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London City to Pierre Elliott Trudeau Intl flights
Stansted to Pierre Elliott Trudeau Intl flights
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Manchester to Toronto Island flights
Heathrow to Ottawa flights
Luton to Pierre Elliott Trudeau Intl flights
Gatwick to Ottawa flights
Dublin to Pearson Intl flights
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Glasgow Intl to Pearson Intl flights
London City to Ottawa flights
Edinburgh to Toronto Island flights
Stansted to Ottawa flights
Dublin to Toronto Island flights
Manchester to Pierre Elliott Trudeau Intl flights
Birmingham to Toronto Island flights
Newcastle upon Tyne to Pearson Intl flights
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Heathrow to Windsor flights
Edinburgh to Pierre Elliott Trudeau Intl flights
Southampton to Pearson Intl flights
Cardiff to Pearson Intl flights
Stansted to London flights
Belfast Intl to Pierre Elliott Trudeau Intl flights
Aberdeen to Pearson Intl flights
Belfast Intl to Pearson Intl flights
Glasgow Intl to Pierre Elliott Trudeau Intl flights
Gatwick to London flights
Glasgow Intl to Ottawa flights
Belfast City to Pearson Intl flights
Leeds to Pearson Intl flights
Istanbul to Pearson Intl flights
Manchester to Ottawa flights

Top airline flying from United Kingdom to London

Discover the top airline that operate flights from United Kingdom to London. 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 858,174 searches. Data last updated 26 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£548Average£670FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for United Kingdom to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to London?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from United Kingdom to London for you. Better yet — we are completely free to use.

Can Cheapflights find flights from United Kingdom to London with no change fees?

Yes, we can. To see specific flights from United Kingdom to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from United Kingdom to London become cheaper?

Of course! You can now track prices for flights from United Kingdom to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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