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Cheap flights from the United Kingdom to London, Ontario from £292

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 26/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YXU
11 Jan — 18 Jan1
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 12 December 2025.

Thu 11/1206:35LHR - YXU
2 stops15h 30mMultiple Airlines
Wed 17/1209:25YXU - LHR
2 stops18h 55mMultiple Airlines
Deal found 10/12£913
Thu 11/1213:00LHR - YXU
1 stop24h 46mAir Canada
Wed 17/1209:25YXU - LHR
1 stop20h 55mAir Canada
Deal found 10/12£917
Thu 11/1214:55LGW - YXU
3 stops31h 10mMultiple Airlines
Wed 17/1217:40YXU - LGW
3 stops35h 20mMultiple Airlines
Deal found 10/12£1,353
Thu 11/1209:40LCY - YXU
2 stops16h 41mMultiple Airlines
Wed 17/1217:40YXU - LCY
2 stops18h 25mMultiple Airlines
Deal found 10/12£2,473

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 12 December 2025.

Round-trip from

£482

One-way from

£292

Popular in

July

Cheapest in

April

Average price

£633
WestJet
  • WestJet
  • 25/1-1/2
  • 2 total stops
  • 56h 24m total
  • United Kingdom to London
Search Deals
26/1
  • 26/1
  • 2 total stops
  • 48h 44m total
  • United Kingdom to London
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£62 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 12 December 2025.
Use the filters below to find and compare flights from the United Kingdom to London that are best for you.

Fly from

United Kingdom

Fly to

London

Route

Depart

Return

Price

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sun 25/1

14:50-06:34

1 stop20h 44m

London

Sun 1/2

20:10-12:50

1 stop35h 40m

£482

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sun 25/1

19:20-06:34

2 stops40h 14m

London

Sun 1/2

20:10-12:50

1 stop35h 40m

£499

GlasgowLondon

GLA - YXU

GLAYXU

Glasgow Intl

Sun 25/1

16:15-21:20

3 stops34h 05m

London

Sun 1/2

09:25-20:05

2 stops29h 40m

£512

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sat 24/1

09:00-21:20

2 stops17h 20m

London

Sat 31/1

05:10-06:30

1 stop20h 20m

£521

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sun 25/1

07:40-17:05

2 stops14h 25m

London

Sun 1/2

17:40-11:20

1 stop12h 40m

£521

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sat 24/1

06:30-17:05

2 stops15h 35m

London

Sat 31/1

17:40-08:30

1 stop9h 50m

£522

LondonLondon

STN - YXU

STNYXU

London Stansted

Sun 25/1

15:15-21:20

3 stops35h 05m

London

Sun 1/2

09:25-11:05

2 stops20h 40m

£523

LondonLondon

LGW - YXU

LGWYXU

London Gatwick

Mon 26/1

18:40-08:46

2 stops43h 06m

London

Mon 2/2

05:10-17:50

2 stops31h 40m

£538

LondonLondon

LCY - YXU

LCYYXU

London City

Mon 26/1

09:15-21:20

2 stops17h 05m

London

Mon 2/2

09:25-09:15

2 stops18h 50m

£550

LondonLondon

LGW - YXU

LGWYXU

London Gatwick

Sun 25/1

18:40-21:20

2 stops31h 40m

London

Sun 1/2

17:40-17:50

2 stops19h 10m

£558

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 38 results
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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, August is the cheapest month in which you can book a flight from United Kingdom to London, Ontario (average of £58). Flying from United Kingdom to London, Ontario in December is currently the most expensive (average of £374). 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 12 December 2025.
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
10,516 reviews
Check prices

Food

6.3

Boarding

7.3

Comfort

7.1

Overall

7.1

Entertainment

6.8

Crew

7.8

Reviews

1 / 20
2.0
Mediocre

Shawna,Sept 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given
Air Canada
7.1
Good
10,516 reviews
Air Canada
7.1
Good
10,516 reviews
Check prices

Food

6.3

Boarding

7.3

Comfort

7.1

Overall

7.1

Entertainment

6.8

Crew

7.8

Reviews

1 / 20
2.0
Mediocre

Shawna,Sept 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

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 20h 44m. Fly via WestJet or Air Canada to get the fastest option. Airlines will cover a distance of 3631 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 City - London or Manchester - 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, August is the cheapest month in which you can book a flight from United Kingdom to London, Ontario (average of £58). Flying from United Kingdom to London, Ontario in December is currently the most expensive (average of £374). 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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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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£472Average£630FlexibilityNo 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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