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Cheap flights from London, ON to the United States from C$ 304

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
14 May — 21 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 14 April 2026.

Thu 11/66:10 a.m.
YXU
-
LAS
2 stops13h 25m
WestJet
Sun 14/61:20 p.m.
LAS
-
YXU
2 stops13h 00m
WestJet
Deal found 14/4C$ 519
Mon 8/66:10 a.m.
YXU
-
LAS
1 stop9h 45m
WestJet
Thu 11/64:35 p.m.
LAS
-
YXU
2 stops18h 15m
WestJet
Deal found 14/4C$ 523
Mon 15/66:10 a.m.
YXU
-
LAX
1 stop9h 15m
WestJet
Wed 17/66:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 13/4C$ 527
Fri 19/62:40 p.m.
YXU
-
LAS
1 stop6h 55m
WestJet
Sun 21/68:30 a.m.
LAS
-
YXU
1 stop29h 15m
WestJet
Deal found 13/4C$ 549
Tue 9/66:10 a.m.
YXU
-
LAS
1 stop9h 45m
WestJet
Wed 10/61:20 p.m.
LAS
-
YXU
2 stops13h 00m
WestJet
Deal found 13/4C$ 584
Fri 19/63:30 p.m.
YXU
-
LAS
2 stops9h 54m
Air Canada
Sun 21/611:25 p.m.
LAS
-
YXU
2 stops12h 32m
Air Canada
Deal found 13/4C$ 615
Fri 29/59:30 a.m.
YXU
-
LAX
1 stop9h 05m
Multiple Airlines
Fri 5/66:05 p.m.
LAX
-
YXU
1 stop8h 15m
Multiple Airlines
Deal found 13/4C$ 621
Thu 4/63:30 p.m.
YXU
-
LAX
1 stop8h 30m
Air Canada
Mon 8/610:30 p.m.
LAX
-
YXU
2 stops13h 28m
Air Canada
Deal found 9/4C$ 628
Fri 1/56:10 a.m.
YXU
-
LAX
1 stop18h 55m
WestJet
Sun 3/56:05 p.m.
LAX
-
YXU
1 stop8h 15m
WestJet
Deal found 14/4C$ 637
Sat 10/103:30 p.m.
YXU
-
LAX
1 stop8h 25m
Air Canada
Sun 18/1010:20 p.m.
LAX
-
YXU
2 stops13h 35m
Air Canada
Deal found 13/4C$ 661
Tue 9/65:10 a.m.
YXU
-
MCO
1 stop5h 55m
Air Canada
Sat 13/612:05 p.m.
MCO
-
YXU
1 stop5h 28m
Air Canada
Deal found 9/4C$ 661
Fri 29/55:55 p.m.
YXU
-
LAS
1 stop19h 45m
WestJet
Fri 5/61:45 p.m.
LAS
-
YXU
1 stop12h 35m
WestJet
Deal found 14/4C$ 665

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 14 April 2026.

Round-trip from

C$ 527

One-way from

C$ 304

Popular in

July

Cheapest in

April

Average price

C$ 460
WestJet
  • WestJet
  • 15/6-17/6
  • 2 total stops
  • 17h 30m total
  • London to USA
Search Deals
WestJet
  • WestJet
  • 24/5
  • 1 total stop
  • 9h 15m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 17 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 14 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

LondonLas Vegas

YXU - LAS

YXULAS

London

Mon 8/6

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

2 stops12h 35m

Las Vegas Harry Reid Intl

Thu 11/6

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

2 stops13h 00m

C$ 523

LondonLos Angeles

YXU - LAX

YXULAX

London

Mon 15/6

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

1 stop9h 15m

Los Angeles Los Angeles

Wed 17/6

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

1 stop8h 15m

C$ 527

LondonLas Vegas

YXU - LAS

YXULAS

London

Fri 19/6

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

2 stops10h 00m

Las Vegas Harry Reid Intl

Sun 21/6

6:10 p.m.-4:45 p.m.

1 stop19h 35m

C$ 552

LondonLas Vegas

YXU - LAS

YXULAS

London

Tue 9/6

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

1 stop9h 45m

Las Vegas Harry Reid Intl

Wed 10/6

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

2 stops13h 00m

C$ 584

LondonLas Vegas

YXU - LAS

YXULAS

London

Fri 19/6

3:30 p.m.-10:24 p.m.

2 stops9h 54m

Las Vegas Harry Reid Intl

Sun 21/6

11:25 p.m.-2:57 p.m.

2 stops12h 32m

C$ 615

LondonLos Angeles

YXU - LAX

YXULAX

London

Fri 29/5

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

1 stop9h 05m

Los Angeles Los Angeles

Fri 5/6

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

1 stop8h 15m

C$ 621

LondonLos Angeles

YXU - LAX

YXULAX

London

Thu 4/6

3:30 p.m.-9:00 p.m.

1 stop8h 30m

Los Angeles Los Angeles

Mon 8/6

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

2 stops13h 28m

C$ 628

LondonLos Angeles

YXU - LAX

YXULAX

London

Sat 10/10

3:30 p.m.-8:55 p.m.

1 stop8h 25m

Los Angeles Los Angeles

Sun 18/10

10:20 p.m.-2:55 p.m.

2 stops13h 35m

C$ 661

LondonOrlando

YXU - MCO

YXUMCO

London

Tue 9/6

5:10 a.m.-11:05 a.m.

1 stop5h 55m

Orlando

Sat 13/6

7:45 a.m.-5:33 p.m.

2 stops9h 48m

C$ 666

LondonTampa

YXU - TPA

YXUTPA

London

Sat 23/5

12:20 p.m.-8:08 p.m.

2 stops7h 48m

Tampa

Sun 24/5

12:05 p.m.-9:38 p.m.

2 stops9h 33m

C$ 680

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/4

Showing 1-10 of 60 resultsSorted by cheapest first
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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, April is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 89). Flying from London, Ontario to USA in February is currently the most expensive (average of C$ 197). 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 14 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
9,582 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

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
9,582 reviews
United Airlines
7.4
Good
9,582 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

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
3,320 reviews
United Airlines
7.4
Good
9,582 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

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
10,923 reviews
United Airlines
7.4
Good
9,582 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

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 5h 36m. London, Ontario and USA are separated by a distance of 565 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 - Nashville Intl or London - Dallas/Fort Worth.

  • 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, April is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 89). Flying from London, Ontario to USA in February is currently the most expensive (average of C$ 197). 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 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 14 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 178AverageC$ 490FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 219AverageC$ 417FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 254AverageC$ 680FlexibilityNo 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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