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Cheap flights from London, ON to the United States from C$ 177

YXU — LAX
8 Oct — 15 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 30/1110:15 a.m. -
Nonstop3h 10m
Fri 11/121:55 p.m. -
Nonstop3h 05m
Deal found 3/9C$ 243
Sun 29/1110:15 a.m. -
Nonstop3h 10m
Mon 7/122:40 p.m. -
Nonstop3h 05m
Deal found 3/9C$ 321
Fri 4/129:30 a.m. -
Nonstop3h 10m
Mon 7/122:40 p.m. -
Nonstop3h 05m
Deal found 3/9C$ 343
Tue 22/96:10 a.m. -
1 stop8h 50m
Thu 1/106:00 a.m. -
1 stop7h 45m
Deal found 3/9C$ 348
Sun 29/1110:15 a.m. -
Nonstop3h 10m
Sun 13/122:40 p.m. -
Nonstop3h 05m
Deal found 3/9C$ 372
Mon 9/115:30 a.m. -
1 stop6h 03m
Wed 11/118:00 a.m. -
1 stop6h 47m
Deal found 4/9C$ 373
Fri 11/129:30 a.m. -
Nonstop3h 10m
Fri 18/1210:40 a.m. -
Nonstop3h 05m
Deal found 7/9C$ 384
Sat 24/106:10 a.m. -
1 stop8h 50m
Sun 1/114:40 p.m. -
1 stop9h 55m
Deal found 7/9C$ 387
Mon 9/115:30 a.m. -
1 stop6h 03m
Mon 16/118:00 a.m. -
1 stop6h 47m
Deal found 3/9C$ 393
Tue 22/96:10 a.m. -
1 stop8h 50m
Sat 3/101:00 p.m. -
1 stop13h 20m
Deal found 3/9C$ 393
Thu 29/103:25 p.m. -
1 stop9h 05m
Sat 31/108:25 a.m. -
1 stop8h 27m
Deal found 5/9C$ 424
Fri 11/96:10 a.m. -
2 stops12h 35m
Thu 17/96:10 p.m. -
1 stop8h 10m
Deal found 3/9C$ 427

Find flight deals from London to USA

Round-trip from

C$ 323

One-way from

C$ 177

Popular in

August

Cheapest in

January

Average price

C$ 730
Porter Airlines
  • Porter Airlines
  • 16/1-26/1
  • Nonstop
  • 5h 45m total
  • London to USA
Search Deals
Porter Airlines
  • Porter Airlines
  • 1/2-31/12
  • Nonstop
  • 3h 10m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 218 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 September 2026
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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

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Mon 1/2

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$ 177

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Sun 18/10

8:20 p.m.-9:49 a.m.

1 stop13h 29m

Fort Lauderdale

Wed 31/12

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

Nonstop0h 00m

C$ 240

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Sun 22/11

5:30 a.m.-11:10 a.m.

1 stop8h 40m

San Francisco

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 246
Quickest round-trip

LondonOrlando

YXU London - MCO Orlando

YXUMCO

London

Sat 2/1

8:20 a.m.-11:15 a.m.

Nonstop2h 55m

Orlando

Wed 31/12

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

Nonstop0h 00m

C$ 252

LondonLos Angeles

YXU London - LAX Los Angeles

YXULAX

London

Tue 20/10

6:10 a.m.-9:01 p.m.

2 stops17h 51m

Los Angeles

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 253

LondonTampa

YXU London - TPA Tampa

YXUTPA

London

Wed 16/12

9:15 a.m.-9:09 p.m.

2 stops11h 54m

Tampa

Wed 31/12

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

Nonstop0h 00m

C$ 254

LondonLas Vegas

YXU London - LAS Las Vegas Harry Reid Intl

YXULAS

London

Sun 18/10

6:10 a.m.-9:28 a.m.

2 stops30h 18m

Las Vegas Harry Reid Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 258

LondonTampa

YXU London - TPA Tampa

YXUTPA

London

Wed 20/1

9:15 a.m.-3:04 p.m.

1 stop5h 49m

Tampa

Wed 31/12

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

Nonstop0h 00m

C$ 261

LondonTampa

YXU London - TPA Tampa

YXUTPA

London

Thu 7/1

5:30 a.m.-12:34 p.m.

1 stop7h 04m

Tampa

Wed 31/12

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

Nonstop0h 00m

C$ 265

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Wed 3/2

9:15 a.m.-3:26 p.m.

1 stop6h 11m

Fort Lauderdale

Wed 31/12

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

Nonstop0h 00m

C$ 268

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

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, November is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 578). Flying from London, Ontario to USA in September is currently the most expensive (average of C$ 1,636). 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
10,180 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.7

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
10,180 reviews
United Airlines
7.4
Good
10,180 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.7

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
11,600 reviews
United Airlines
7.4
Good
10,180 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.7

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 - Fort Lauderdale. You may also consider London - Orlando 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$ 578). Flying from London, Ontario to USA in September is currently the most expensive (average of C$ 1,636). 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

Alternative routes for London to USA

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Top airline flying from London to USA

AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 455AverageC$ 751FlexibilityNo 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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