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Cheap flights from London, ON to the United States from C$ 228

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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
10 Aug — 17 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 11 July 2026.

Wed 19/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Wed 26/86:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Deal found 11/7C$ 371
Fri 11/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Fri 18/96:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Deal found 8/7C$ 388
Thu 6/86:10 a.m.
YXU
-
PHX
1 stop9h 00m
WestJet
Thu 13/88:00 a.m.
PHX
-
YXU
1 stop8h 50m
WestJet
Deal found 9/7C$ 393
Sat 12/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Wed 16/96:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Deal found 8/7C$ 403
Fri 11/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Sun 20/96:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Deal found 8/7C$ 413
Sat 22/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Sat 29/86:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Deal found 7/7C$ 422
Tue 25/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Tue 1/96:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Deal found 11/7C$ 423
Sat 12/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Sat 19/91:00 p.m.
SFO
-
YXU
1 stop24h 45m
WestJet
Deal found 8/7C$ 429
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 9/7C$ 443
Mon 14/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Wed 16/96:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Deal found 8/7C$ 453
Fri 11/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Sat 19/91:00 p.m.
SFO
-
YXU
1 stop24h 45m
WestJet
Deal found 8/7C$ 456
Fri 21/86:10 a.m.
YXU
-
PHX
1 stop9h 00m
WestJet
Tue 25/88:00 a.m.
PHX
-
YXU
1 stop8h 50m
WestJet
Deal found 7/7C$ 459

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 11 July 2026.

Round-trip from

C$ 371

One-way from

C$ 228

Popular in

July

Cheapest in

January

Average price

C$ 975
WestJet
  • WestJet
  • 19/8-26/8
  • 2 total stops
  • 17h 05m total
  • London to USA
Search Deals
WestJet
  • WestJet
  • 7/8
  • 2 total stops
  • 9h 55m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 81 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 11 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

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 25/8

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

1 stop8h 50m

San Francisco

Tue 1/9

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

1 stop8h 15m

C$ 423

LondonPhoenix

YXU - PHX

YXUPHX

London

Thu 6/8

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

1 stop9h 00m

Phoenix Sky Harbor Intl

Thu 13/8

1:15 p.m.-1:50 p.m.

2 stops21h 35m

C$ 432

LondonLas Vegas

YXU - LAS

YXULAS

London

Sun 18/10

6:10 a.m.-4:35 p.m.

2 stops13h 25m

Las Vegas Harry Reid Intl

Fri 23/10

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

2 stops13h 00m

C$ 444

LondonPhoenix

YXU - PHX

YXUPHX

London

Fri 21/8

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

1 stop9h 00m

Phoenix Sky Harbor Intl

Tue 25/8

8:00 a.m.-7:50 p.m.

1 stop8h 50m

C$ 459
Quickest round-trip

LondonPhoenix

YXU - PHX

YXUPHX

London

Fri 21/8

5:40 a.m.-10:59 a.m.

1 stop8h 19m

Phoenix Sky Harbor Intl

Tue 25/8

11:55 a.m.-9:40 p.m.

1 stop6h 45m

C$ 481

LondonPhoenix

YXU - PHX

YXUPHX

London

Thu 20/8

5:40 a.m.-10:59 a.m.

1 stop8h 19m

Phoenix Sky Harbor Intl

Mon 24/8

7:55 a.m.-9:40 p.m.

2 stops10h 45m

C$ 487

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 28/8

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

1 stop8h 50m

San Francisco

Thu 3/9

1:00 p.m.-4:45 p.m.

1 stop24h 45m

C$ 488

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$ 502

LondonPhoenix

YXU - PHX

YXUPHX

London

Thu 20/8

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

1 stop9h 00m

Phoenix Sky Harbor Intl

Mon 24/8

1:15 p.m.-7:50 p.m.

1 stop27h 35m

C$ 519

LondonLas Vegas

YXU - LAS

YXULAS

London

Tue 4/8

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

1 stop30h 45m

Las Vegas Harry Reid Intl

Mon 10/8

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

1 stop8h 10m

C$ 521

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/7

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$ 225). Flying from London, Ontario to USA in April is currently the most expensive (average of C$ 473). 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 11 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
9,978 reviews
Check prices

Crew

8.1

Food

6.7

Entertainment

7.1

Overall

7.4

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
9,978 reviews
United Airlines
7.4
Good
9,978 reviews
Check prices

Crew

8.1

Food

6.7

Entertainment

7.1

Overall

7.4

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
3,407 reviews
United Airlines
7.4
Good
9,978 reviews
Check prices

Crew

8.1

Food

6.7

Entertainment

7.1

Overall

7.4

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
11,327 reviews
United Airlines
7.4
Good
9,978 reviews
Check prices

Crew

8.1

Food

6.7

Entertainment

7.1

Overall

7.4

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 8h 19m. London, Ontario and USA are separated by a distance of 2876 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 - Newark or London - New York LaGuardia.

  • 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$ 225). Flying from London, Ontario to USA in April is currently the most expensive (average of C$ 473). 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 11 July 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 225AverageC$ 436FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 261AverageC$ 841FlexibilityNo 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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