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£339+ Cheap flights to London, Ontario

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
— YXU
31 Aug — 7 Sep1
1 adult

Flights to London, ON in 2025

Find the latest flights to London in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 26 August 2025.

Return from

£504

One-way from

£339

Popular in

December

Cheapest in

April

Average price

£692
Air Canada
  • Air Canada
  • 11/9-19/9
  • 2 total stops
  • 33h 49m total
  • London to London
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23/9
  • 23/9
  • 3 total stops
  • 35h 37m total
  • London to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£80 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).
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Average for return flights in August 2025
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Find flight deals to London

Cheapest flights to London
Explore the most affordable flight options available to London. Find the lowest fares based on data from user searches, with prices last updated on 26 August 2025.

Thu 11/917:40LHR - YXU
1 stop20h 39mAir Canada
Fri 19/915:50YXU - LHR
1 stop13h 10mAir Canada
Deal found 24/8£504
Thu 9/1006:55STN - YXU
2 stops31h 22mMultiple Airlines
Thu 16/1009:55YXU - STN
2 stops25h 45mMultiple Airlines
Deal found 25/8£525
Wed 8/1017:10LHR - YXU
2 stops33h 17mAir Canada
Wed 15/1015:40YXU - LHR
2 stops11h 55mAir Canada
Deal found 24/8£538
Thu 9/1008:40LHR - YXU
2 stops17h 47mAir Canada
Thu 16/1009:55YXU - LHR
1 stop15h 40mAir Canada
Deal found 25/8£540
Wed 27/817:40LHR - YXU
2 stops20h 37mAir Canada
Sun 7/915:50YXU - LHR
1 stop15h 00mAir Canada
Deal found 24/8£545
Thu 11/920:05LHR - YXU
2 stops48h 12mMultiple Airlines
Fri 19/906:10YXU - LHR
2 stops19h 20mMultiple Airlines
Deal found 24/8£547
Thu 9/1008:40LHR - YXU
2 stops29h 37mMultiple Airlines
Thu 16/1015:40YXU - LHR
2 stops33h 50mMultiple Airlines
Deal found 25/8£549
Thu 9/1018:40LGW - YXU
2 stops43h 37mMultiple Airlines
Thu 16/1015:40YXU - LGW
2 stops21h 10mMultiple Airlines
Deal found 25/8£567
Wed 8/1018:35LGW - YXU
2 stops31h 52mSWISS
Wed 15/1015:40YXU - LGW
2 stops21h 15mSWISS
Deal found 24/8£568
Wed 8/1018:35LGW - YXU
2 stops31h 52mMultiple Airlines
Wed 15/1015:40YXU - LGW
2 stops21h 15mMultiple Airlines
Deal found 24/8£574
Wed 10/909:25LCY - YXU
2 stops17h 04mMultiple Airlines
Thu 18/915:50YXU - LCY
2 stops22h 05mMultiple Airlines
Deal found 24/8£624
Thu 2/1006:55STN - YXU
3 stops27h 17mMultiple Airlines
Mon 6/1006:00YXU - STN
2 stops29h 05mMultiple Airlines
Deal found 23/8£630

Cheapflights Fare Finder

 
Locate flights to London that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 26 August 2025.
Use the filters below to find and compare flights to London that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 11/9

17:40-09:19

1 stop20h 39m

London

Fri 19/9

15:50-10:00

1 stop13h 10m

£504

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sun 21/9

08:30-15:17

1 stop11h 47m

London

Sun 28/9

15:50-06:35

1 stop9h 45m

£504

LondonLondon

STN - YXU

STNYXU

London Stansted

Thu 9/10

06:55-09:17

2 stops31h 22m

London

Thu 16/10

09:55-16:40

2 stops25h 45m

£525

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Wed 8/10

17:10-21:27

2 stops33h 17m

London

Wed 15/10

15:40-08:35

2 stops11h 55m

£538

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 9/10

08:40-21:27

2 stops17h 47m

London

Thu 16/10

09:55-06:35

1 stop15h 40m

£540

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Tue 7/10

08:45-21:27

2 stops17h 42m

London

Tue 14/10

15:40-09:35

2 stops12h 55m

£544

LondonLondon

LGW - YXU

LGWYXU

London Gatwick

Thu 9/10

18:40-09:17

2 stops43h 37m

London

Thu 16/10

15:40-17:50

2 stops21h 10m

£567

LondonLondon

LGW - YXU

LGWYXU

London Gatwick

Wed 8/10

18:35-21:27

2 stops31h 52m

London

Wed 15/10

15:40-17:55

2 stops21h 15m

£568

LondonLondon

LGW - YXU

LGWYXU

London Gatwick

Wed 8/10

18:35-21:27

2 stops31h 52m

London

Wed 15/10

15:40-17:55

2 stops21h 15m

£574

LondonLondon

LCY - YXU

LCYYXU

London City

Wed 10/9

09:25-21:29

2 stops17h 04m

London

Thu 18/9

15:50-18:55

2 stops22h 05m

£624

Flights are sorted by cheapest return flights first.

Deals found on 24/8

Showing 1-10 of 35 results
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Best time to book a flight to London

Have a flexible travel schedule? Discover the best time to fly to London 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 to London

How long is the flight to London?

On average, a flight from London to London takes 23 hours 20 minutes. Flights to London from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to London?

The most popular airline flying from London to London is Air Canada.

Air Canada
Air Canada
From £572

What are the cheapest airlines that fly to London?

The cheapest airline flying from London to London is Air Canada.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 70.0 - 100.0 inches per month. January is typically the wettest month, when rainfall can reach 100.0 mm. March is typically the driest time to visit London when rainfall is around 70.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of February, when temperatures are typically at their lowest (around -6.0 C).

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 August 2025.
Check out reviews from past customers who have flown Air Canada to Canada to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,000 reviews
Check prices

Boarding

7.3

Overall

7.1

Food

6.3

Entertainment

6.8

Comfort

7.1

Crew

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

AMS - YYZ

The cabin crew was excellent especially considering the stress they've been under and that their not paid for all the preflight work they do. The entertainment screens in the bank of seats that I was sitting in didn't work for the entire 8 hour flight. I consider this a failure on management's part to properly maintain their aircraft to ensure a pleasant experience for their customers.
Air Canada
7.1
Good
10,000 reviews
Air Canada
7.1
Good
10,000 reviews
Check prices

Boarding

7.3

Overall

7.1

Food

6.3

Entertainment

6.8

Comfort

7.1

Crew

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

AMS - YYZ

The cabin crew was excellent especially considering the stress they've been under and that their not paid for all the preflight work they do. The entertainment screens in the bank of seats that I was sitting in didn't work for the entire 8 hour flight. I consider this a failure on management's part to properly maintain their aircraft to ensure a pleasant experience for their customers.

FAQs about flying to London

London insider information

  • Storybook Gardens has the type of entrance gate you would expect – a turreted castle. There are 54 attractions and eight “chapters” of interactive fun including Storybook Valley, Pirates’ Island and Old McDonald’s Farm. The Storybook Mascots – Slippery Seal, Lucy Seal, Waagosh the fox, and Pirate Pete the parrot – that wander around the grounds delight younger visitors.
  • Covent Garden Market is one of London’s most treasured landmarks. Established in 1845, it sells the best of the area’s organic foods, meats, ethnic foods and Southwestern Ontario’s largest selection of cheese. The outdoor farmers’ market takes place on Thursdays and Saturdays (May to November). There’s a lively busker program and the market hosts several festivals throughout the year.
  • Eldon House is London’s oldest residence. This splendid residence was built in 1834 for Captain John and Amelia Harris and given to the city in 1959, complete with family furnishings. Its recreated 19th-century gardens are beautiful and host traditional afternoon teas in the summer time.

  • What is the climate like in London?

    The climate is continental. Summers (June to August) are warm to hot and humid. The winters are cold. London has the most thunderstorms of any Canadian city.

  • When is the best time to fly to London?

    Peak Season:The summer months of June to August are high season. This is when most travellers visit London as the weather is at its best and school holidays take place. Off Season:Winter is generally the low season due to the cold weather.

  • What is the best way to travel around London?

    For travellers who intend to travel around Ontario, renting a car is best. London is an easily navigable city with a north-south/east-west grid layout. The London Transit Commission offers regular bus services throughout the city. There are well-marked bike and walking trails throughout London as well if you prefer a more active way of exploring the city.

  • What airport do you fly into for flights to London?

    If you book a flight to London, you will be flying into London, which is the city’s only airport. London (YXU) is located 5.3 mi from the center of London.

  • Can I find cheaper flights to London if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to London on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to London?

    Based on reviews from Cheapflights users, Air Canada is rated the highest out of the airlines that fly to London.

  • Where does the fastest flight to London depart from?

    For those looking to save time traveling to London, London offers the quickest one-way flight (13 hours 12 minutes).

  • Does London have car hire?

    Yes. Those touching down at London can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to London?

    Yes. London has hotels nearby for those requiring accommodations. Best Western London Airport Inn & Suites is the closest property to London (1.0 mi away from London).

See more FAQs

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

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