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Cheap flights from London, ON to the United States from C$ 288

YXU — LAX
26 Sep — 3 Oct1
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

Sun 25/105:30 a.m. -
1 stop6h 03m
Thu 29/108:00 a.m. -
1 stop6h 47m
Deal found 26/8C$ 395
Thu 17/96:10 a.m. -
2 stops13h 25m
Tue 22/91:20 p.m. -
2 stops13h 00m
Deal found 25/8C$ 413
Sun 13/96:10 a.m. -
1 stop9h 45m
Thu 17/94:30 p.m. -
1 stop9h 50m
Deal found 24/8C$ 430
Sun 25/105:30 a.m. -
1 stop6h 03m
Wed 28/108:00 a.m. -
1 stop6h 47m
Deal found 26/8C$ 434
Mon 26/105:30 a.m. -
1 stop6h 03m
Thu 29/108:00 a.m. -
1 stop6h 47m
Deal found 26/8C$ 441
Mon 9/115:30 a.m. -
1 stop6h 03m
Wed 11/118:00 a.m. -
1 stop6h 47m
Deal found 23/8C$ 444
Thu 24/95:40 a.m. -
1 stop8h 04m
Sun 27/912:05 a.m. -
1 stop11h 45m
Deal found 27/8C$ 444
Wed 28/109:15 a.m. -
2 stops9h 27m
Tue 3/118:00 a.m. -
1 stop6h 47m
Deal found 26/8C$ 445
Wed 28/105:30 a.m. -
1 stop6h 03m
Mon 2/118:00 a.m. -
1 stop6h 47m
Deal found 26/8C$ 462
Wed 7/106:10 a.m. -
1 stop18h 45m
Wed 14/106:05 p.m. -
1 stop8h 15m
Deal found 22/8C$ 496
Thu 8/106:10 a.m. -
1 stop8h 50m
Tue 13/106:00 a.m. -
1 stop20h 20m
Deal found 26/8C$ 509
Fri 2/105:40 a.m. -
1 stop8h 04m
Mon 5/104:30 p.m. -
2 stops13h 50m
Deal found 25/8C$ 523

Find flight deals from London to USA

Round-trip from

C$ 383

One-way from

C$ 288

Popular in

August

Cheapest in

January

Average price

C$ 1,008
Porter Airlines
  • Porter Airlines
  • 16/1-23/1
  • Nonstop
  • 5h 45m total
  • London to USA
Search Deals
Air Canada
  • Air Canada
  • 20/11
  • 1 total stop
  • 6h 03m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 220 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
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
Quickest round-trip

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Mon 9/11

5:30 a.m.-11:33 a.m.

1 stop6h 03m

Fort Lauderdale

Wed 11/11

8:00 a.m.-2:47 p.m.

1 stop6h 47m

C$ 444

LondonLas Vegas

YXU London - LAS Las Vegas Harry Reid Intl

YXULAS

London

Thu 17/9

5:55 p.m.-5:15 p.m.

1 stop26h 20m

Las Vegas Harry Reid Intl

Tue 22/9

6:10 p.m.-5:20 a.m.

1 stop8h 10m

C$ 460

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Fri 20/11

5:30 a.m.-11:33 a.m.

1 stop6h 03m

Fort Lauderdale

Sat 28/11

8:00 a.m.-2:47 p.m.

1 stop6h 47m

C$ 517

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Fri 2/10

5:40 a.m.-3:21 p.m.

2 stops12h 41m

San Francisco

Tue 6/10

11:35 a.m.-9:40 p.m.

1 stop7h 05m

C$ 523

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Fri 2/10

5:40 a.m.-3:21 p.m.

2 stops12h 41m

San Francisco

Mon 5/10

4:30 p.m.-9:20 a.m.

2 stops13h 50m

C$ 523

LondonLas Vegas

YXU London - LAS Las Vegas Harry Reid Intl

YXULAS

London

Mon 2/11

6:40 a.m.-8:45 p.m.

1 stop17h 05m

Las Vegas Harry Reid Intl

Thu 5/11

4:45 p.m.-5:35 a.m.

1 stop9h 50m

C$ 534

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Thu 8/10

6:10 a.m.-9:55 p.m.

1 stop18h 45m

San Francisco

Thu 15/10

6:00 a.m.-4:45 p.m.

1 stop7h 45m

C$ 534

LondonLos Angeles

YXU London - LAX Los Angeles Los Angeles

YXULAX

London

Sat 13/2

3:20 p.m.-9:29 p.m.

1 stop9h 09m

Los Angeles Los Angeles

Wed 17/2

10:55 p.m.-2:42 p.m.

1 stop12h 47m

C$ 549

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Thu 8/10

6:10 a.m.-9:55 p.m.

1 stop18h 45m

San Francisco

Tue 13/10

6:00 a.m.-5:20 a.m.

1 stop20h 20m

C$ 552

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Tue 6/10

5:40 a.m.-3:15 p.m.

2 stops9h 35m

Fort Lauderdale

Tue 13/10

7:00 a.m.-9:40 p.m.

2 stops14h 40m

C$ 556

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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, November is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 580). Flying from London, Ontario to USA in September is currently the most expensive (average of C$ 1,034). 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

Check out reviews from past customers who have flown with United Airlines and Air 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
10,123 reviews
Check prices

Crew

8.1

Comfort

7.3

Food

6.7

Boarding

7.7

Entertainment

7.1

Overall

7.4

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
10,123 reviews
United Airlines
7.4
Good
10,123 reviews
Check prices

Crew

8.1

Comfort

7.3

Food

6.7

Boarding

7.7

Entertainment

7.1

Overall

7.4

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
11,540 reviews
United Airlines
7.4
Good
10,123 reviews
Check prices

Crew

8.1

Comfort

7.3

Food

6.7

Boarding

7.7

Entertainment

7.1

Overall

7.4

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

  • 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 6h 03m. London, Ontario and USA are separated by a distance of 1886 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 - Fort Lauderdale or London - Las Vegas Harry Reid Intl.

  • 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, November is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 580). Flying from London, Ontario to USA in September is currently the most expensive (average of C$ 1,034). 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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Top airline flying from London to USA

AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 397AverageC$ 719FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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

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

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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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