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Cheap flights from London, ON to the United States from C$ 154

YXU — LAX
13 Oct — 20 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

Mon 7/1210:15 a.m. -
Nonstop3h 10m
Mon 14/122:40 p.m. -
Nonstop3h 05m
Deal found 11/9C$ 216
Wed 18/1110:15 a.m. -
Nonstop3h 10m
Fri 20/111:55 p.m. -
Nonstop3h 05m
Deal found 10/9C$ 309
Wed 18/1110:15 a.m. -
Nonstop3h 10m
Sun 22/112:40 p.m. -
Nonstop3h 05m
Deal found 10/9C$ 319
Sun 8/115:30 a.m. -
1 stop6h 03m
Wed 11/118:00 a.m. -
1 stop6h 47m
Deal found 9/9C$ 352
Mon 9/115:30 a.m. -
1 stop6h 03m
Wed 11/118:00 a.m. -
1 stop6h 47m
Deal found 12/9C$ 394
Mon 16/116:40 a.m. -
1 stop12h 05m
Mon 23/112:40 p.m. -
Nonstop3h 05m
Deal found 10/9C$ 395
Sun 15/115:30 a.m. -
1 stop6h 03m
Wed 25/118:00 a.m. -
1 stop6h 47m
Deal found 10/9C$ 397
Mon 16/115:30 a.m. -
2 stops12h 12m
Wed 25/118:00 a.m. -
1 stop6h 47m
Deal found 10/9C$ 401
Sat 31/107:40 a.m. -
2 stops30h 35m
Wed 4/116:00 p.m. -
1 stop9h 35m
Deal found 12/9C$ 480
Thu 3/125:30 a.m. -
1 stop5h 39m
Sat 12/128:55 p.m. -
1 stop11h 42m
Deal found 9/9C$ 528
Tue 6/103:30 p.m. -
1 stop5h 19m
Tue 13/109:45 p.m. -
1 stop10h 40m
Deal found 8/9C$ 537
Thu 3/1210:00 a.m. -
Nonstop2h 55m
Sat 12/125:26 p.m. -
2 stops36h 09m
Deal found 13/9C$ 542

Find flight deals from London to USA

Round-trip from

C$ 216

One-way from

C$ 154

Popular in

August

Cheapest in

January

Average price

C$ 732

Good round-trip deal

C$ 362 or less

Good one-way deal

C$ 175 or less
Porter Airlines
  • Porter Airlines
  • 7/12-14/12
  • Nonstop
  • 6h 15m total
  • London to USA
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Porter Airlines
  • Porter Airlines
  • 3/3-31/12
  • Nonstop
  • 3h 10m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 219 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 35 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from London to USA.
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Price to beat on a one-way flight from London to USA.
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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 1/3

6:15 a.m.-9:25 a.m.

Nonstop3h 10m

Fort Lauderdale

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 180

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Sun 28/2

6:15 a.m.-9:25 a.m.

Nonstop3h 10m

Fort Lauderdale

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 180

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Mon 11/1

6:15 a.m.-9:25 a.m.

Nonstop3h 10m

Fort Lauderdale

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 180

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Fri 5/3

6:15 a.m.-9:25 a.m.

Nonstop3h 10m

Fort Lauderdale

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 250

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Wed 13/1

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

1 stop6h 03m

Fort Lauderdale

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 261

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Tue 26/1

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

1 stop6h 03m

Fort Lauderdale

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 262

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Mon 11/1

9:15 a.m.-5:42 p.m.

2 stops8h 27m

Fort Lauderdale

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 265

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Sat 31/10

9:15 a.m.-8:06 p.m.

2 stops10h 51m

Fort Lauderdale

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 270

LondonPhoenix

YXU London - PHX Phoenix Sky Harbor Intl

YXUPHX

London

Sat 6/3

5:30 a.m.-12:40 p.m.

1 stop9h 10m

Phoenix Sky Harbor Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 276

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Wed 27/1

5:30 a.m.-3:18 p.m.

2 stops9h 48m

Fort Lauderdale

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 280

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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$ 617). Flying from London, Ontario to USA in September is currently the most expensive (average of C$ 1,642). 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
10,211 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.7

Comfort

7.3

Boarding

7.7

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
10,211 reviews
United Airlines
7.4
Good
10,211 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.7

Comfort

7.3

Boarding

7.7

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
11,619 reviews
United Airlines
7.4
Good
10,211 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.7

Comfort

7.3

Boarding

7.7

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 3h 10m. 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 - New York LaGuardia. You may also consider London - Fort Lauderdale or London - Newark.

  • 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$ 617). Flying from London, Ontario to USA in September is currently the most expensive (average of C$ 1,642). 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$ 456AverageC$ 753FlexibilityNo 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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