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Cheap flights from London, ON to the United States from C$ 212

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
15 Aug — 22 Aug1
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 16 July 2026.

Sun 18/106:10 a.m.
YXU
-
LAS
2 stops13h 25m
WestJet
Fri 23/101:20 p.m.
LAS
-
YXU
2 stops13h 00m
WestJet
Deal found 15/7C$ 451
Sun 27/95:55 p.m.
YXU
-
LAX
1 stop21h 30m
WestJet
Wed 30/96:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 15/7C$ 456
Thu 27/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Thu 3/96:00 a.m.
SFO
-
YXU
1 stop20h 20m
WestJet
Deal found 12/7C$ 469
Sat 29/86:10 a.m.
YXU
-
SFO
1 stop18h 45m
WestJet
Sat 5/96:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Deal found 15/7C$ 470
Wed 19/85:55 p.m.
YXU
-
SFO
1 stop25h 45m
WestJet
Wed 26/86:00 a.m.
SFO
-
YXU
1 stop20h 20m
WestJet
Deal found 14/7C$ 483
Mon 7/96:10 a.m.
YXU
-
LAS
2 stops12h 35m
WestJet
Fri 11/96:10 p.m.
LAS
-
YXU
1 stop8h 10m
WestJet
Deal found 12/7C$ 521
Tue 1/96:10 a.m.
YXU
-
LAS
1 stop9h 45m
WestJet
Sat 5/98:30 a.m.
LAS
-
YXU
2 stops26h 20m
WestJet
Deal found 16/7C$ 531
Tue 25/86:10 a.m.
YXU
-
LAX
1 stop10h 55m
WestJet
Tue 1/96:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 11/7C$ 542
Sun 30/86:10 a.m.
YXU
-
LAX
1 stop9h 15m
WestJet
Sun 6/97:30 a.m.
LAX
-
YXU
1 stop18h 50m
WestJet
Deal found 15/7C$ 548
Fri 21/86:10 a.m.
YXU
-
LAX
1 stop9h 15m
WestJet
Tue 25/86:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 13/7C$ 550
Sat 24/106:10 a.m.
YXU
-
LAS
2 stops41h 05m
WestJet
Tue 27/108:00 a.m.
LAS
-
YXU
1 stop8h 15m
WestJet
Deal found 16/7C$ 553
Thu 8/106:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Tue 13/106:00 a.m.
SFO
-
YXU
1 stop20h 20m
WestJet
Deal found 12/7C$ 556

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 16 July 2026.

Round-trip from

C$ 451

One-way from

C$ 212

Popular in

July

Cheapest in

January

Average price

C$ 967
WestJet
  • WestJet
  • 18/10-23/10
  • 4 total stops
  • 26h 25m total
  • London to USA
Search Deals
WestJet
  • WestJet
  • 18/8
  • 2 total stops
  • 10h 15m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 16 July 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

LondonLos Angeles

YXU - LAX

YXULAX

London

Sun 27/9

5:55 p.m.-12:25 p.m.

1 stop21h 30m

Los Angeles Los Angeles

Wed 30/9

6:05 p.m.-5:20 a.m.

1 stop8h 15m

C$ 456

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 27/8

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

1 stop8h 50m

San Francisco

Thu 3/9

6:00 a.m.-1:50 p.m.

2 stops28h 50m

C$ 482

LondonLas Vegas

YXU - LAS

YXULAS

London

Mon 7/9

6:10 a.m.-3:45 p.m.

2 stops12h 35m

Las Vegas Harry Reid Intl

Fri 11/9

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

1 stop8h 10m

C$ 521

LondonLos Angeles

YXU - LAX

YXULAX

London

Tue 25/8

6:10 a.m.-2:05 p.m.

1 stop10h 55m

Los Angeles Los Angeles

Tue 1/9

6:05 p.m.-5:20 a.m.

1 stop8h 15m

C$ 542

LondonLos Angeles

YXU - LAX

YXULAX

London

Sun 30/8

6:10 a.m.-12:25 p.m.

1 stop9h 15m

Los Angeles Los Angeles

Sun 6/9

7:30 a.m.-5:20 a.m.

1 stop18h 50m

C$ 548

LondonLas Vegas

YXU - LAS

YXULAS

London

Sat 24/10

6:10 a.m.-8:15 p.m.

2 stops41h 05m

Las Vegas Harry Reid Intl

Tue 27/10

8:00 a.m.-7:15 p.m.

1 stop8h 15m

C$ 553

LondonLas Vegas

YXU - LAS

YXULAS

London

Tue 1/9

5:55 p.m.-12:30 p.m.

2 stops21h 35m

Las Vegas Harry Reid Intl

Sat 5/9

8:30 a.m.-1:50 p.m.

2 stops26h 20m

C$ 563

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 26/9

6:10 a.m.-6:45 p.m.

1 stop15h 35m

Seattle/Tacoma Intl

Wed 30/9

7:35 p.m.-5:20 a.m.

1 stop6h 45m

C$ 567

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 12/9

6:10 a.m.-6:45 p.m.

1 stop15h 35m

Seattle/Tacoma Intl

Wed 16/9

7:35 p.m.-5:20 a.m.

1 stop6h 45m

C$ 569

LondonLas Vegas

YXU - LAS

YXULAS

London

Sun 6/9

2:40 p.m.-9:40 p.m.

2 stops10h 00m

Las Vegas Harry Reid Intl

Thu 10/9

1:20 p.m.-5:20 a.m.

2 stops13h 00m

C$ 571

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/7

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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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
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, August is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 223). Flying from London, Ontario to USA in April is currently the most expensive (average of C$ 469). 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 16 July 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
9,993 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

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
9,993 reviews
United Airlines
7.4
Good
9,993 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

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
3,409 reviews
United Airlines
7.4
Good
9,993 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

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
11,347 reviews
United Airlines
7.4
Good
9,993 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

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 4h 15m. London, Ontario and USA are separated by a distance of 632 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 - Newark or London - Los Angeles Los Angeles.

  • 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, August is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 223). Flying from London, Ontario to USA in April is currently the most expensive (average of C$ 469). 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 2 airlines flying from London to USA

Discover the top 2 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 16 July 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 224AverageC$ 433FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 259AverageC$ 845FlexibilityNo 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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