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Cheap flights from London, ON to the United States from C$ 267

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
5 Aug — 12 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 6 July 2026.

Sun 19/76:10 a.m.
YXU
-
LAS
2 stops12h 35m
WestJet
Mon 27/71:20 p.m.
LAS
-
YXU
2 stops13h 00m
WestJet
Deal found 5/7C$ 498
Tue 4/85:55 p.m.
YXU
-
SEA
1 stop18h 45m
WestJet
Tue 11/87:00 a.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Deal found 2/7C$ 501
Fri 28/86:10 a.m.
YXU
-
LAS
1 stop9h 45m
WestJet
Mon 31/86:10 p.m.
LAS
-
YXU
1 stop8h 10m
WestJet
Deal found 6/7C$ 502
Mon 28/96:10 a.m.
YXU
-
LAS
2 stops33h 20m
WestJet
Fri 2/101:20 p.m.
LAS
-
YXU
2 stops13h 00m
WestJet
Deal found 3/7C$ 514
Sat 31/103:25 p.m.
YXU
-
LAX
1 stop7h 39m
Air Canada
Wed 4/117:20 a.m.
LAX
-
YXU
2 stops11h 32m
Air Canada
Deal found 1/7C$ 524
Mon 12/106:10 a.m.
YXU
-
LAS
1 stop9h 45m
WestJet
Thu 22/104:30 p.m.
LAS
-
YXU
1 stop9h 50m
WestJet
Deal found 2/7C$ 551
Wed 5/85:55 p.m.
YXU
-
SEA
1 stop18h 45m
WestJet
Wed 12/810:30 a.m.
SEA
-
YXU
1 stop15h 50m
WestJet
Deal found 6/7C$ 555
Sat 26/96:10 a.m.
YXU
-
SEA
1 stop15h 35m
WestJet
Wed 30/97:35 p.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Deal found 5/7C$ 572
Mon 7/96:10 a.m.
YXU
-
LAS
2 stops12h 35m
WestJet
Fri 11/91:20 p.m.
LAS
-
YXU
2 stops13h 00m
WestJet
Deal found 6/7C$ 593
Sat 31/103:25 p.m.
YXU
-
SEA
1 stop8h 34m
Air Canada
Wed 4/118:40 a.m.
SEA
-
YXU
2 stops10h 12m
Air Canada
Deal found 1/7C$ 688
Sat 26/93:30 p.m.
YXU
-
SEA
2 stops10h 12m
Air Canada
Wed 30/98:00 a.m.
SEA
-
YXU
1 stop6h 43m
Air Canada
Deal found 3/7C$ 690
Sat 31/109:15 a.m.
YXU
-
TPA
2 stops11h 54m
Air Canada
Wed 4/114:00 p.m.
TPA
-
YXU
1 stop5h 52m
Air Canada
Deal found 1/7C$ 705

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 6 July 2026.

Round-trip from

C$ 498

One-way from

C$ 267

Popular in

July

Cheapest in

January

Average price

C$ 978
WestJet
  • WestJet
  • 19/7-27/7
  • 4 total stops
  • 25h 35m total
  • London to USA
Search Deals
WestJet
  • WestJet
  • 26/8
  • 1 total stop
  • 9h 15m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 82 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 6 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

Sat 31/10

3:25 p.m.-8:04 p.m.

1 stop7h 39m

Los Angeles Los Angeles

Wed 4/11

7:20 a.m.-9:52 p.m.

2 stops11h 32m

C$ 524

LondonLas Vegas

YXU - LAS

YXULAS

London

Mon 12/10

6:10 a.m.-12:55 p.m.

1 stop9h 45m

Las Vegas Harry Reid Intl

Thu 22/10

4:30 p.m.-5:20 a.m.

1 stop9h 50m

C$ 551

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$ 572

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

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

2 stops13h 00m

C$ 593

LondonLas Vegas

YXU - LAS

YXULAS

London

Sun 16/8

6:10 a.m.-9:40 p.m.

1 stop18h 30m

Las Vegas Harry Reid Intl

Sun 23/8

4:35 p.m.-5:20 a.m.

2 stops33h 45m

C$ 680

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 31/10

3:25 p.m.-8:59 p.m.

1 stop8h 34m

Seattle/Tacoma Intl

Wed 4/11

8:40 a.m.-9:52 p.m.

2 stops10h 12m

C$ 688

LondonLas Vegas

YXU - LAS

YXULAS

London

Thu 12/11

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

2 stops26h 15m

Las Vegas Harry Reid Intl

Mon 16/11

9:15 p.m.-6:15 p.m.

2 stops18h 00m

C$ 698

LondonLas Vegas

YXU - LAS

YXULAS

London

Wed 28/10

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

2 stops27h 15m

Las Vegas Harry Reid Intl

Fri 30/10

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

1 stop8h 15m

C$ 698

LondonLas Vegas

YXU - LAS

YXULAS

London

Tue 20/10

6:10 a.m.-12:55 p.m.

1 stop9h 45m

Las Vegas Harry Reid Intl

Thu 22/10

4:30 p.m.-5:20 a.m.

1 stop9h 50m

C$ 701

LondonTampa

YXU - TPA

YXUTPA

London

Sat 31/10

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

2 stops11h 54m

Tampa

Wed 4/11

4:00 p.m.-9:52 p.m.

1 stop5h 52m

C$ 705

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

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$ 226). Flying from London, Ontario to USA in April is currently the most expensive (average of C$ 474). 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 6 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
9,945 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

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
9,945 reviews
United Airlines
7.4
Good
9,945 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

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
3,398 reviews
United Airlines
7.4
Good
9,945 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

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
11,311 reviews
United Airlines
7.4
Good
9,945 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

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 7h 39m. London, Ontario and USA are separated by a distance of 3364 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 - Newark. You may also consider London - New York LaGuardia or London - New York John F Kennedy 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, August is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 226). Flying from London, Ontario to USA in April is currently the most expensive (average of C$ 474). 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

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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 6 July 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 226AverageC$ 437FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 262AverageC$ 851FlexibilityNo 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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