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Cheap flights from London, ON to the United States from C$ 252

YXU — LAX
29 Oct — 5 Nov1
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

Sat 12/1210:00 a.m. -
Nonstop2h 55m
Thu 17/1211:15 a.m. -
Nonstop2h 50m
Deal found 28/9C$ 341
Mon 21/126:15 a.m. -
Nonstop3h 10m
Mon 28/1210:40 a.m. -
Nonstop3h 05m
Deal found 27/9C$ 371
Mon 21/126:15 a.m. -
Nonstop3h 10m
Fri 25/1210:40 a.m. -
Nonstop3h 05m
Deal found 28/9C$ 382
Thu 22/106:10 a.m. -
1 stop8h 50m
Thu 29/105:40 p.m. -
1 stop9h 55m
Deal found 25/9C$ 439
Mon 21/126:15 a.m. -
Nonstop3h 10m
Wed 30/127:45 p.m. -
Nonstop3h 05m
Deal found 27/9C$ 442
Thu 3/1210:00 a.m. -
Nonstop2h 55m
Sat 12/122:10 p.m. -
Nonstop2h 50m
Deal found 28/9C$ 460
Mon 21/126:15 a.m. -
Nonstop3h 10m
Sun 27/1210:40 a.m. -
Nonstop3h 05m
Deal found 27/9C$ 463
Sun 22/1110:15 a.m. -
Nonstop3h 10m
Sun 29/112:40 p.m. -
Nonstop3h 05m
Deal found 28/9C$ 465
Wed 2/126:40 a.m. -
1 stop10h 00m
Tue 12/12:30 p.m. -
1 stop12h 05m
Deal found 25/9C$ 474
Thu 19/116:40 a.m. -
1 stop12h 10m
Mon 23/114:40 p.m. -
1 stop9h 55m
Deal found 27/9C$ 480
Thu 3/126:40 a.m. -
1 stop10h 00m
Wed 13/12:30 p.m. -
1 stop12h 05m
Deal found 24/9C$ 487
Fri 18/126:15 a.m. -
Nonstop3h 10m
Fri 25/1210:40 a.m. -
Nonstop3h 05m
Deal found 27/9C$ 487

Find flight deals from London to USA

Round-trip from

C$ 334

One-way from

C$ 252

Popular in

August

Cheapest in

November

Average price

C$ 881

Good round-trip deal

C$ 294 or less

Good one-way deal

C$ 179 or less
Porter Airlines
  • Porter Airlines
  • 28/2-5/3
  • Nonstop
  • 6h 15m total
  • London to USA
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WestJet
  • WestJet
  • 23/10-31/12
  • 1 total stop
  • 8h 50m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (C$ 358 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 42 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

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Fri 23/10

6:10 a.m.-12:00 p.m.

1 stop8h 50m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 252

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Sun 8/11

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$ 289

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Sun 22/11

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$ 296

LondonOrlando

YXU London - MCO Orlando

YXUMCO

London

Mon 7/12

10:15 a.m.-1:39 p.m.

2 stops27h 24m

Orlando

Wed 31/12

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

Nonstop0h 00m

C$ 299

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Tue 3/11

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$ 310

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Mon 2/11

8:30 p.m.-11:10 a.m.

1 stop17h 40m

San Francisco

Wed 31/12

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

Nonstop0h 00m

C$ 316

LondonTampa

YXU London - TPA Tampa

YXUTPA

London

Fri 29/1

5:30 a.m.-12:29 p.m.

1 stop6h 59m

Tampa

Wed 31/12

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

Nonstop0h 00m

C$ 336

LondonTampa

YXU London - TPA Tampa

YXUTPA

London

Wed 11/11

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$ 340

LondonTampa

YXU London - TPA Tampa

YXUTPA

London

Sun 8/11

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$ 341

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Sun 22/11

5:30 a.m.-8:28 p.m.

2 stops14h 58m

Fort Lauderdale

Wed 31/12

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

Nonstop0h 00m

C$ 350

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/9

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, December is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 535). Flying from London, Ontario to USA in August is currently the most expensive (average of C$ 1,030). 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 Porter Airlines,United Airlines, 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.
Porter Airlines
8.0
Very good
465 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Porter Airlines
8.0
Very good
465 reviews
Porter Airlines
8.0
Very good
465 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
United Airlines
7.4
Good
10,252 reviews
Porter Airlines
8.0
Very good
465 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Air Canada
7.1
Good
11,703 reviews
Porter Airlines
8.0
Very good
465 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.0

Food

7.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

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 - Miami. You may also consider London - Orlando or London - Fort Lauderdale.

  • 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, December is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 535). Flying from London, Ontario to USA in August is currently the most expensive (average of C$ 1,030). 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$ 447AverageC$ 778FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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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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