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Cheap flights from London, ON to the United States from C$ 243

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
25 Aug — 1 Sep1
1 adult

Cheap flight deals from London to USA

Keep the following information in mind while searching for London to USA flight deals. Data was last updated 20 August 2025.

Round-trip from

C$ 450

One-way from

C$ 255

Popular in

September

Cheapest in

January

Average price

C$ 557
Air Canada
  • Air Canada
  • 2/10-9/10
  • 2 total stops
  • 14h 32m total
  • London to USA
Search Deals
WestJet
  • WestJet
  • 19/9
  • 1 total stop
  • 24h 34m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from London to USA

Cheapest flights from London to USA
Explore the most affordable flight options available from London to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.

Thu 2/103:40 p.m.YXU - FLL
1 stop7h 30mAir Canada
Thu 9/108:00 a.m.FLL - YXU
1 stop7h 02mAir Canada
Deal found 18/8C$ 450
Thu 2/109:55 a.m.YXU - MCO
1 stop5h 03mAir Canada
Thu 9/103:50 p.m.MCO - YXU
1 stop5h 37mAir Canada
Deal found 18/8C$ 450
Sat 4/106:00 a.m.YXU - LAS
2 stops17h 21mWestJet
Sat 11/106:20 p.m.LAS - YXU
1 stop7h 52mWestJet
Deal found 19/8C$ 451
Wed 5/115:45 a.m.YXU - FLL
1 stop5h 38mAir Canada
Tue 18/112:45 p.m.FLL - YXU
1 stop6h 36mAir Canada
Deal found 20/8C$ 462
Wed 19/115:45 a.m.YXU - MCO
1 stop5h 30mAir Canada
Thu 18/1212:10 p.m.MCO - YXU
1 stop4h 56mAir Canada
Deal found 19/8C$ 463
Fri 29/83:40 p.m.YXU - MCO
2 stops8h 08mAir Canada
Tue 2/98:05 p.m.MCO - YXU
1 stop13h 12mAir Canada
Deal found 19/8C$ 488
Fri 22/86:15 a.m.YXU - MCO
2 stops10h 15mAir Canada
Mon 25/88:05 p.m.MCO - YXU
1 stop13h 12mAir Canada
Deal found 18/8C$ 491
Thu 11/96:00 a.m.YXU - LAX
2 stops32h 43mWestJet
Tue 16/912:35 p.m.LAX - YXU
2 stops13h 37mWestJet
Deal found 18/8C$ 495
Mon 17/115:45 a.m.YXU - FLL
1 stop5h 38mAir Canada
Sat 29/1111:15 a.m.FLL - YXU
2 stops10h 06mAir Canada
Deal found 18/8C$ 499
Fri 22/86:15 a.m.YXU - MCO
2 stops10h 15mAir Canada
Wed 27/85:25 p.m.MCO - YXU
2 stops15h 52mAir Canada
Deal found 18/8C$ 512
Thu 9/106:00 a.m.YXU - LAX
2 stops17h 21mWestJet
Wed 15/106:05 p.m.LAX - YXU
1 stop8h 07mWestJet
Deal found 19/8C$ 516
Thu 2/103:40 p.m.YXU - LAX
1 stop8h 13mAir Canada
Thu 9/109:55 p.m.LAX - YXU
1 stop8h 22mAir Canada
Deal found 18/8C$ 523

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to USA 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 20 August 2025.
Use the filters below to find and compare flights from London to the United States that are best for you.

Fly from

London

Fly to

USA

Route

Depart

Return

Price

LondonFort Lauderdale

YXU - FLL

YXUFLL

London

Thu 2/10

3:40 p.m.-11:10 p.m.

1 stop7h 30m

Fort Lauderdale

Thu 9/10

8:00 a.m.-3:02 p.m.

1 stop7h 02m

C$ 450

LondonOrlando

YXU - MCO

YXUMCO

London

Thu 2/10

9:55 a.m.-2:58 p.m.

1 stop5h 03m

Orlando

Thu 9/10

3:50 p.m.-9:27 p.m.

1 stop5h 37m

C$ 450

LondonLas Vegas

YXU - LAS

YXULAS

London

Sat 4/10

6:00 a.m.-8:21 p.m.

2 stops17h 21m

Las Vegas Harry Reid Intl

Sat 11/10

6:20 p.m.-5:12 a.m.

1 stop7h 52m

C$ 451

LondonFort Lauderdale

YXU - FLL

YXUFLL

London

Wed 5/11

5:45 a.m.-11:23 a.m.

1 stop5h 38m

Fort Lauderdale

Tue 18/11

2:45 p.m.-9:21 p.m.

1 stop6h 36m

C$ 462

LondonOrlando

YXU - MCO

YXUMCO

London

Wed 19/11

5:45 a.m.-11:15 a.m.

1 stop5h 30m

Orlando

Thu 18/12

12:10 p.m.-5:06 p.m.

1 stop4h 56m

C$ 463

LondonOrlando

YXU - MCO

YXUMCO

London

Mon 1/9

6:15 a.m.-11:30 a.m.

1 stop5h 15m

Orlando

Mon 8/9

8:05 p.m.-9:19 a.m.

1 stop13h 14m

C$ 481

LondonOrlando

YXU - MCO

YXUMCO

London

Sun 25/1

5:40 p.m.-11:30 p.m.

1 stop5h 50m

Orlando

Sun 1/2

8:50 p.m.-8:46 a.m.

1 stop11h 56m

C$ 481

LondonLos Angeles

YXU - LAX

YXULAX

London

Thu 11/9

6:00 a.m.-11:43 a.m.

2 stops32h 43m

Los Angeles

Tue 16/9

12:35 p.m.-5:12 a.m.

2 stops13h 37m

C$ 495

LondonFort Lauderdale

YXU - FLL

YXUFLL

London

Mon 17/11

5:45 a.m.-11:23 a.m.

1 stop5h 38m

Fort Lauderdale

Sat 29/11

11:15 a.m.-9:21 p.m.

2 stops10h 06m

C$ 499

LondonOrlando

YXU - MCO

YXUMCO

London

Mon 1/9

6:15 a.m.-11:30 a.m.

1 stop5h 15m

Orlando

Sun 7/9

7:00 a.m.-3:17 p.m.

1 stop8h 17m

C$ 505

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/8

Showing 1-10 of 60 results
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Best time to book a flight from London to USA

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

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

Currently, May is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 232). Flying from London, Ontario to USA in March is currently the most expensive (average of C$ 297). 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 US?

Find hourly flight availability from London to USA. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 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 USA as you normally would.

Reviews of airlines servicing USA

Get insights into the airlines that provide service to USA. 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 USA. Reviews last updated 20 August 2025.
Check out reviews from past customers who have flown with United Airlines,WestJet, andAir Canada from London to the United States to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,928 reviews
Check prices

Comfort

7.3

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,928 reviews
United Airlines
7.4
Good
8,928 reviews
Check prices

Comfort

7.3

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
WestJet
7.2
Good
3,032 reviews
United Airlines
7.4
Good
8,928 reviews
Check prices

Comfort

7.3

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Air Canada
7.1
Good
10,000 reviews
United Airlines
7.4
Good
8,928 reviews
Check prices

Comfort

7.3

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Flair Airlines
6.0
Okay
250 reviews
United Airlines
7.4
Good
8,928 reviews
Check prices

Comfort

7.3

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Related info for your journey

Find useful and relevant information for your journey from London to USA. 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 States?

    Located just 8.6 km from the city centre, London (YXU) is the airport most travellers will use when flying to United States from London.

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

    Departing from London, Ontario to USA will take you 5h 13m. London, Ontario and USA are separated by a distance of 665 km. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from London, Ontario to USA one-way?

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as C$ 255. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from London, Ontario to USA for a low price.

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

    The most popular route from London, Ontario to USA is London - Newark. You may also consider London - New York LaGuardia or London - Los Angeles.

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

    Yes. In addition to deals on London to USA flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to USA?

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

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

    Yes. Cheapflights offers flight deals from London to USA 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 USA?

    Currently, May is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 232). Flying from London, Ontario to USA in March is currently the most expensive (average of C$ 297). 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

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from London to USA

Discover the top 4 airlines that operate flights from London to USA. 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 20 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapestC$ 161AverageC$ 267FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
United AirlinesCheapestC$ 192AverageC$ 559FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 285AverageC$ 407FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 332AverageC$ 668FlexibilityNo 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 USA?

Cheapflights helps you search for flights from London to USA via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights simply makes it quick and affordable to book flights from London to USA by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to USA flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to USA from London today and book when prices fit your budget.

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