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Cheap flights from London, ON to the United States from C$ 254

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
25 Apr — 2 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to USA

Enter your travel dates to find the best prices.

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 26 March 2026.

Fri 12/65:10 a.m.
YXU
-
MCO
1 stop5h 55m
Air Canada
Fri 19/67:00 a.m.
MCO
-
YXU
1 stop4h 42m
Air Canada
Deal found 25/3C$ 436
Wed 15/49:25 a.m.
YXU
-
SFO
1 stop8h 55m
Air Canada
Tue 5/58:05 a.m.
SFO
-
YXU
2 stops10h 33m
Air Canada
Deal found 24/3C$ 437
Thu 21/56:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Mon 25/56:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Deal found 25/3C$ 447
Tue 2/63:30 p.m.
YXU
-
MCO
1 stop5h 16m
Air Canada
Sat 6/612:05 p.m.
MCO
-
YXU
1 stop5h 28m
Air Canada
Deal found 25/3C$ 472
Tue 14/45:10 a.m.
YXU
-
SFO
1 stop8h 45m
Air Canada
Sat 2/58:05 a.m.
SFO
-
YXU
2 stops10h 33m
Air Canada
Deal found 22/3C$ 474
Tue 14/45:10 a.m.
YXU
-
SFO
2 stops13h 22m
Air Canada
Tue 5/58:05 a.m.
SFO
-
YXU
2 stops10h 33m
Air Canada
Deal found 24/3C$ 480
Tue 14/45:10 a.m.
YXU
-
SFO
1 stop8h 45m
Air Canada
Mon 27/44:15 p.m.
SFO
-
YXU
1 stop13h 29m
Air Canada
Deal found 25/3C$ 483
Thu 16/49:25 a.m.
YXU
-
SFO
2 stops14h 57m
Air Canada
Tue 28/41:20 p.m.
SFO
-
YXU
2 stops16h 24m
Air Canada
Deal found 25/3C$ 488
Wed 20/56:10 p.m.
YXU
-
MCO
1 stop5h 36m
Air Canada
Sat 23/59:55 p.m.
MCO
-
YXU
1 stop13h 48m
Air Canada
Deal found 24/3C$ 488
Fri 8/55:10 a.m.
YXU
-
MCO
1 stop5h 46m
Air Canada
Fri 15/57:00 a.m.
MCO
-
YXU
1 stop14h 38m
Air Canada
Deal found 24/3C$ 494
Tue 14/45:10 a.m.
YXU
-
SFO
1 stop8h 45m
Air Canada
Tue 28/42:30 p.m.
SFO
-
YXU
1 stop15h 14m
Air Canada
Deal found 22/3C$ 496
Fri 8/56:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Tue 12/56:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Deal found 24/3C$ 506

Find flight deals from London to USA

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

Round-trip from

C$ 436

One-way from

C$ 254

Popular in

July

Cheapest in

April

Average price

C$ 565
Air Canada
  • Air Canada
  • 12/6-19/6
  • 2 total stops
  • 10h 37m total
  • London to USA
Search Deals
WestJet
  • WestJet
  • 24/5
  • 1 total stop
  • 8h 50m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 26 March 2026.
Use the filters below to find and compare flights from London to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonOrlando

YXU - MCO

YXUMCO

London

Tue 2/6

9:30 a.m.-10:31 p.m.

2 stops13h 01m

Orlando

Sat 6/6

12:05 p.m.-5:33 p.m.

1 stop5h 28m

C$ 477

LondonOrlando

YXU - MCO

YXUMCO

London

Wed 20/5

5:10 a.m.-12:46 p.m.

2 stops7h 36m

Orlando

Sat 23/5

9:55 p.m.-11:43 a.m.

1 stop13h 48m

C$ 494

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 16/4

5:40 p.m.-1:17 a.m.

2 stops10h 37m

San Francisco

Tue 5/5

5:30 a.m.-9:38 p.m.

2 stops13h 08m

C$ 524

LondonLos Angeles

YXU - LAX

YXULAX

London

Thu 4/6

5:10 a.m.-10:35 a.m.

1 stop8h 25m

Los Angeles Los Angeles

Mon 8/6

10:30 p.m.-2:58 p.m.

2 stops13h 28m

C$ 565

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 9/7

12:20 p.m.-7:38 a.m.

2 stops22h 18m

San Francisco

Wed 29/7

6:54 p.m.-2:55 p.m.

2 stops17h 01m

C$ 570

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 14/4

5:10 a.m.-7:19 p.m.

2 stops17h 09m

San Francisco

Fri 8/5

9:08 p.m.-5:33 p.m.

2 stops17h 25m

C$ 570

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 16/4

9:25 a.m.-12:39 a.m.

2 stops18h 14m

San Francisco

Fri 8/5

11:10 p.m.-5:33 p.m.

2 stops15h 23m

C$ 570

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 16/4

9:25 a.m.-12:39 a.m.

2 stops18h 14m

San Francisco

Mon 4/5

11:56 p.m.-5:33 p.m.

2 stops14h 37m

C$ 570

LondonLas Vegas

YXU - LAS

YXULAS

London

Fri 5/6

12:20 p.m.-10:30 p.m.

2 stops13h 10m

Las Vegas Harry Reid Intl

Tue 9/6

6:00 p.m.-8:53 a.m.

2 stops11h 53m

C$ 590
Quickest round-trip

LondonOrlando

YXU - MCO

YXUMCO

London

Thu 2/7

6:20 p.m.-11:47 p.m.

1 stop5h 27m

Orlando

Mon 6/7

7:00 a.m.-11:45 a.m.

1 stop4h 45m

C$ 600

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/3

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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, April is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 90). Flying from London, Ontario to USA in December is currently the most expensive (average of C$ 200). 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 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 26 March 2026.
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
9,482 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,482 reviews
United Airlines
7.4
Good
9,482 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
WestJet
7.2
Good
3,303 reviews
United Airlines
7.4
Good
9,482 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Air Canada
7.1
Good
10,840 reviews
United Airlines
7.4
Good
9,482 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Flair Airlines
6.0
Okay
266 reviews
United Airlines
7.4
Good
9,482 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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 55m. London, Ontario and USA are separated by a distance of 1622 km. This flight may include one or multiple stops.

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

    The most popular route from London, Ontario to USA is London - Orlando. You may also consider London - Las Vegas Harry Reid Intl or London - San Francisco.

  • 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, April is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 90). Flying from London, Ontario to USA in December is currently the most expensive (average of C$ 200). 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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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 26 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapestC$ 162AverageC$ 190FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
United AirlinesCheapestC$ 178AverageC$ 575FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 220AverageC$ 410FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 255AverageC$ 697FlexibilityNo 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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