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Cheap flights from London, ON to the United States from C$ 294

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 22/5. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
9 May — 16 May1
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 9 April 2026.

Sun 14/62:40 p.m.
YXU
-
LAS
1 stop6h 55m
WestJet
Thu 18/64:35 p.m.
LAS
-
YXU
2 stops18h 15m
WestJet
Deal found 8/4C$ 501
Wed 6/56:10 a.m.
YXU
-
SEA
1 stop15h 35m
WestJet
Sat 9/57:35 p.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Deal found 4/4C$ 519
Sat 6/66:10 a.m.
YXU
-
LAX
1 stop10h 55m
WestJet
Tue 9/66:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 7/4C$ 529
Sun 7/62:40 p.m.
YXU
-
LAX
2 stops10h 25m
WestJet
Tue 9/66:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 7/4C$ 530
Thu 30/75:55 p.m.
YXU
-
SEA
1 stop18h 45m
WestJet
Wed 12/87:00 a.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Deal found 4/4C$ 536
Sat 6/66:10 a.m.
YXU
-
LAX
1 stop10h 55m
WestJet
Wed 10/66:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 6/4C$ 541
Tue 28/46:10 a.m.
YXU
-
LAX
1 stop9h 15m
WestJet
Wed 6/56:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 5/4C$ 544
Sun 7/62:40 p.m.
YXU
-
LAX
2 stops10h 25m
WestJet
Thu 11/66:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 6/4C$ 546
Sat 6/66:10 a.m.
YXU
-
LAX
1 stop10h 55m
WestJet
Thu 11/66:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 7/4C$ 554
Sun 7/62:40 p.m.
YXU
-
LAX
2 stops10h 25m
WestJet
Wed 10/66:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 7/4C$ 555
Wed 29/76:10 a.m.
YXU
-
SEA
1 stop15h 35m
WestJet
Tue 11/87:35 p.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Deal found 7/4C$ 557
Fri 31/78:40 p.m.
YXU
-
SEA
1 stop16h 00m
WestJet
Wed 12/87:00 a.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Deal found 7/4C$ 561

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 9 April 2026.

Round-trip from

C$ 501

One-way from

C$ 294

Popular in

July

Cheapest in

April

Average price

C$ 463
WestJet
  • WestJet
  • 14/6-18/6
  • 3 total stops
  • 25h 10m total
  • London to USA
Search Deals
WestJet
  • WestJet
  • 22/5
  • 2 total stops
  • 10h 25m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 9 April 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

LondonSeattle

YXU - SEA

YXUSEA

London

Wed 6/5

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

1 stop15h 35m

Seattle/Tacoma Intl

Sat 9/5

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

1 stop6h 45m

C$ 519

LondonSeattle

YXU - SEA

YXUSEA

London

Thu 30/7

5:55 p.m.-9:40 a.m.

1 stop18h 45m

Seattle/Tacoma Intl

Wed 12/8

7:00 a.m.-4:45 p.m.

1 stop6h 45m

C$ 536

LondonLos Angeles

YXU - LAX

YXULAX

London

Sat 6/6

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

1 stop10h 55m

Los Angeles

Thu 11/6

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

1 stop8h 15m

C$ 544

LondonLos Angeles

YXU - LAX

YXULAX

London

Sun 7/6

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

1 stop9h 15m

Los Angeles

Tue 9/6

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

1 stop8h 15m

C$ 562

LondonLos Angeles

YXU - LAX

YXULAX

London

Sun 7/6

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

1 stop9h 15m

Los Angeles

Wed 10/6

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

1 stop8h 15m

C$ 575

LondonLos Angeles

YXU - LAX

YXULAX

London

Sat 6/6

5:55 p.m.-11:20 a.m.

2 stops20h 25m

Los Angeles

Tue 9/6

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

1 stop8h 15m

C$ 580

LondonLos Angeles

YXU - LAX

YXULAX

London

Sat 6/6

6:10 a.m.-11:20 a.m.

2 stops32h 10m

Los Angeles

Wed 10/6

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

1 stop8h 15m

C$ 587

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 1/8

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

1 stop15h 35m

Seattle/Tacoma Intl

Mon 10/8

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

1 stop6h 45m

C$ 602

LondonLos Angeles

YXU - LAX

YXULAX

London

Thu 4/6

9:30 a.m.-3:35 p.m.

1 stop9h 05m

Los Angeles

Mon 8/6

10:30 p.m.-2:58 p.m.

2 stops13h 28m

C$ 630
Quickest round-trip

LondonNewark

YXU - EWR

YXUEWR

London

Tue 16/6

3:30 p.m.-7:05 p.m.

1 stop3h 35m

Newark

Thu 25/6

6:30 a.m.-11:42 a.m.

1 stop5h 12m

C$ 631

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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, March is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 119). Flying from London, Ontario to USA in February is currently the most expensive (average of C$ 204). 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 9 April 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
9,555 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

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
9,555 reviews
United Airlines
7.4
Good
9,555 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

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
3,317 reviews
United Airlines
7.4
Good
9,555 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

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
10,907 reviews
United Airlines
7.4
Good
9,555 reviews
Check prices

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

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 3h 35m. 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 - Orlando. You may also consider London - Las Vegas Harry Reid Intl or London - Miami.

  • 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, March is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 119). Flying from London, Ontario to USA in February is currently the most expensive (average of C$ 204). 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from London to USA

Discover the top 3 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 9 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 179AverageC$ 409FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 220AverageC$ 407FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 256AverageC$ 685FlexibilityNo 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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