Find flights
When to book
Airlines
FAQs

Cheap flights from London, ON to the United Kingdom from C$ 474

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

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 28 October 2025.

Round-trip from

C$ 940

One-way from

C$ 474

Popular in

December

Cheapest in

July

Average price

C$ 1,070
Air Canada
  • Air Canada
  • 20/2-24/2
  • 4 total stops
  • 58h 31m total
  • London to United Kingdom
Search Deals
10/12
  • 10/12
  • 2 total stops
  • 40h 35m total
  • London to United Kingdom
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 179 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 65 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find 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 28 October 2025.

Mon 1/125:10 a.m.YXU - LHR
1 stop20h 20mAir Canada
Mon 22/126:00 p.m.LHR - YXU
1 stop19h 46mAir Canada
Deal found 28/10C$ 1,004
Tue 9/129:25 a.m.YXU - LHR
2 stops16h 45mAir Canada
Tue 16/126:00 a.m.LHR - YXU
2 stops20h 21mAir Canada
Deal found 27/10C$ 1,064
Mon 10/118:10 p.m.YXU - LHR
1 stop35h 40mWestJet
Mon 24/112:50 p.m.LHR - YXU
1 stop33h 22mWestJet
Deal found 27/10C$ 1,106
Thu 11/129:25 a.m.YXU - LHR
2 stops16h 45mAir Canada
Thu 18/121:25 p.m.LHR - YXU
2 stops24h 21mAir Canada
Deal found 27/10C$ 1,234
Thu 11/125:10 a.m.YXU - LHR
2 stops25h 05mUnited Airlines
Thu 18/121:35 p.m.LHR - YXU
2 stops24h 11mUnited Airlines
Deal found 27/10C$ 1,309
Mon 10/115:15 a.m.YXU - LHR
2 stops20h 55mMultiple Airlines
Mon 24/116:35 a.m.LHR - YXU
2 stops15h 30mMultiple Airlines
Deal found 27/10C$ 1,344
Mon 10/115:40 p.m.YXU - LHR
1 stop12h 40mLufthansa
Mon 24/117:40 a.m.LHR - YXU
2 stops14h 25mLufthansa
Deal found 27/10C$ 1,351
Tue 25/115:15 a.m.YXU - LGW
2 stops31h 35mMultiple Airlines
Tue 2/126:40 p.m.LGW - YXU
2 stops31h 41mMultiple Airlines
Deal found 28/10C$ 1,371
Mon 10/115:40 p.m.YXU - LCY
2 stops14h 15mMultiple Airlines
Mon 24/119:50 a.m.LCY - YXU
2 stops16h 31mMultiple Airlines
Deal found 27/10C$ 1,473
Thu 11/129:25 a.m.YXU - EDI
2 stops17h 30mMultiple Airlines
Thu 18/126:00 a.m.EDI - YXU
2 stops31h 46mMultiple Airlines
Deal found 27/10C$ 1,480
Fri 12/125:10 a.m.YXU - LHR
2 stops19h 45mUnited Airlines
Fri 19/124:00 p.m.LHR - YXU
2 stops30h 05mUnited Airlines
Deal found 28/10C$ 1,484
Wed 10/129:25 a.m.YXU - MAN
3 stops30h 50mMultiple Airlines
Wed 17/127:40 a.m.MAN - YXU
3 stops30h 06mMultiple Airlines
Deal found 26/10C$ 1,515

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 28 October 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

Fri 20/2

5:40 p.m.-8:35 p.m.

2 stops21h 55m

London Heathrow

Tue 24/2

1:45 p.m.-9:21 p.m.

2 stops36h 36m

C$ 940

LondonLondon

YXU - LHR

YXULHR

London

Fri 20/2

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

1 stop16h 05m

London Heathrow

Tue 24/2

1:00 p.m.-9:21 p.m.

1 stop13h 21m

C$ 965

LondonLondon

YXU - LHR

YXULHR

London

Mon 1/12

5:10 a.m.-6:30 a.m.

1 stop20h 20m

London Heathrow

Mon 22/12

6:00 p.m.-8:46 a.m.

1 stop19h 46m

C$ 1,004

LondonLondon

YXU - LHR

YXULHR

London

Tue 9/12

5:10 a.m.-6:30 a.m.

1 stop20h 20m

London Heathrow

Tue 16/12

6:00 a.m.-9:21 p.m.

2 stops20h 21m

C$ 1,064

LondonLondon

YXU - LCY

YXULCY

London

Fri 20/2

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

2 stops42h 00m

London City

Tue 24/2

6:15 p.m.-5:05 p.m.

2 stops51h 50m

C$ 1,101

LondonLondon

YXU - LHR

YXULHR

London

Mon 10/11

8:10 p.m.-12:50 p.m.

1 stop35h 40m

London Heathrow

Mon 24/11

2:50 p.m.-7:12 p.m.

1 stop33h 22m

C$ 1,106

LondonLondon

YXU - LHR

YXULHR

London

Thu 11/12

9:25 a.m.-7:10 a.m.

2 stops16h 45m

London Heathrow

Thu 18/12

6:00 p.m.-8:46 a.m.

1 stop19h 46m

C$ 1,234

LondonManchester

YXU - MAN

YXUMAN

London

Mon 2/3

9:25 a.m.-4:55 p.m.

2 stops26h 30m

Manchester

Fri 6/3

6:05 a.m.-9:21 p.m.

2 stops20h 16m

C$ 1,368

LondonLondon

YXU - LGW

YXULGW

London

Tue 25/11

5:15 a.m.-5:50 p.m.

2 stops31h 35m

London Gatwick

Tue 2/12

6:40 p.m.-9:21 p.m.

2 stops31h 41m

C$ 1,371

LondonLondon

YXU - LCY

YXULCY

London

Mon 10/11

5:40 p.m.-12:55 p.m.

2 stops14h 15m

London City

Mon 24/11

9:50 a.m.-9:21 p.m.

2 stops16h 31m

C$ 1,473

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/10

Showing 1-10 of 48 results
1
2
3
...
5

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, May is the cheapest month in which you can book a flight from London, Ontario to United Kingdom (average of C$ 98). Flying from London, Ontario to United Kingdom in December is currently the most expensive (average of C$ 711). 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 28 October 2025.

A simple way to save on the total cost of your ticket is to fly from London, Ontario to United Kingdom in the morning. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight at noon.

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 28 October 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
10,371 reviews
Check prices

Boarding

7.3

Crew

7.8

Overall

7.1

Comfort

7.1

Food

6.3

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.
Air Canada
7.1
Good
10,371 reviews
Air Canada
7.1
Good
10,371 reviews
Check prices

Boarding

7.3

Crew

7.8

Overall

7.1

Comfort

7.1

Food

6.3

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.

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 21h 55m. Fly via 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 cheapest airlines to fly from London, Ontario to United Kingdom one-way?

    One-way options have recently been found by users for as low as C$ 492 on WestJet. Other airlines that offer cheap prices include Air Canada from C$ 638 and SWISS from C$ 857 one-way.

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

    While some choose either London - London Heathrow or London - London Gatwick, London - London City 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, May is the cheapest month in which you can book a flight from London, Ontario to United Kingdom (average of C$ 98). Flying from London, Ontario to United Kingdom in December is currently the most expensive (average of C$ 711). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
Pierre Elliott Trudeau Intl to Charles de Gaulle flights
Pearson Intl to Heathrow flights
Pearson Intl to Istanbul flights
Pearson Intl to Lisbon flights
Pearson Intl to Gatwick flights
Pearson Intl to Charles de Gaulle flights
Pierre Elliott Trudeau Intl to Orly flights
Pierre Elliott Trudeau Intl to Lisbon flights
Pearson Intl to London City flights
Pierre Elliott Trudeau Intl to Heathrow flights
Pierre Elliott Trudeau Intl to Istanbul flights
Pearson Intl to Leonardo da Vinci/Fiumicino flights
Pearson Intl to Amsterdam flights
Pierre Elliott Trudeau Intl to Leonardo da Vinci/Fiumicino flights
Toronto Island to Heathrow flights
Pierre Elliott Trudeau Intl to Málaga flights
Pearson Intl to Dublin flights
Pearson Intl to Orly flights
Pearson Intl to Frankfurt flights
Pearson Intl to Stansted flights
Pearson Intl to Luton flights
Pierre Elliott Trudeau Intl to Barcelona-El Prat flights
Toronto Island to Lisbon flights
Pierre Elliott Trudeau Intl to Frankfurt flights
Pierre Elliott Trudeau Intl to Madrid flights
Toronto Island to Charles de Gaulle flights
Pearson Intl to Sabiha Gokcen flights
Pierre Elliott Trudeau Intl to Lyon flights
Pearson Intl to Barcelona-El Prat flights
Pierre Elliott Trudeau Intl to Gatwick flights
Pierre Elliott Trudeau Intl to Beauvais-Tille flights
Pierre Elliott Trudeau Intl to Geneva flights
Pierre Elliott Trudeau Intl to Bruxelles-National flights
Pearson Intl to Zurich flights
Pierre Elliott Trudeau Intl to Zurich flights
Pierre Elliott Trudeau Intl to Toulouse flights
Pierre Elliott Trudeau Intl to London City flights
Pierre Elliott Trudeau Intl to Marseille flights
Toronto Island to Frankfurt flights
Pierre Elliott Trudeau Intl to Sabiha Gokcen flights
Pearson Intl to Madrid flights
Pearson Intl to Athens flights
Pierre Elliott Trudeau Intl to Malpensa flights
Pierre Elliott Trudeau Intl to Athens flights
Pierre Elliott Trudeau Intl to Stansted flights
Pearson Intl to Munich flights
Ottawa to Madrid flights
Pearson Intl to Bruxelles-National flights
Toronto Island to Leonardo da Vinci/Fiumicino flights
Pearson Intl to Vienna flights

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 28 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 877AverageC$ 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.