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Cheap flights from London, ON to the United States from C$ 208

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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
8 Jun — 15 Jun1
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 May 2026.

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 9/5C$ 394
Tue 21/72:40 p.m.
YXU
-
SFO
2 stops24h 20m
WestJet
Thu 30/76:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Deal found 8/5C$ 414
Wed 21/105:40 a.m.
YXU
-
SFO
1 stop7h 59m
Air Canada
Sat 24/1011:35 a.m.
SFO
-
YXU
1 stop7h 05m
Air Canada
Deal found 8/5C$ 436
Thu 27/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Mon 31/86:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Deal found 5/5C$ 439
Fri 19/66:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Sun 28/66:00 a.m.
SFO
-
YXU
1 stop20h 20m
WestJet
Deal found 7/5C$ 440
Fri 19/66:10 a.m.
YXU
-
LAS
2 stops12h 35m
WestJet
Mon 22/66:10 p.m.
LAS
-
YXU
1 stop8h 10m
WestJet
Deal found 6/5C$ 458
Fri 12/62:40 p.m.
YXU
-
SFO
2 stops10h 15m
WestJet
Tue 23/66:00 a.m.
SFO
-
YXU
1 stop20h 20m
WestJet
Deal found 9/5C$ 458
Tue 11/86:10 a.m.
YXU
-
PDX
1 stop10h 40m
WestJet
Wed 12/82:30 p.m.
PDX
-
YXU
1 stop11h 50m
WestJet
Deal found 5/5C$ 469
Tue 16/62:40 p.m.
YXU
-
HNL
2 stops36h 15m
WestJet
Wed 24/69:55 p.m.
HNL
-
YXU
2 stops25h 25m
WestJet
Deal found 6/5C$ 487
Thu 10/96:10 a.m.
YXU
-
LAS
2 stops13h 25m
WestJet
Sun 13/91:20 p.m.
LAS
-
YXU
2 stops13h 00m
WestJet
Deal found 7/5C$ 490
Fri 19/66:10 a.m.
YXU
-
LAS
2 stops12h 35m
WestJet
Fri 26/61:20 p.m.
LAS
-
YXU
2 stops13h 00m
WestJet
Deal found 4/5C$ 510
Mon 8/66:10 a.m.
YXU
-
LAS
1 stop9h 45m
WestJet
Mon 15/64:35 p.m.
LAS
-
YXU
2 stops33h 45m
WestJet
Deal found 7/5C$ 518

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 May 2026.

Round-trip from

C$ 394

One-way from

C$ 208

Popular in

July

Cheapest in

April

Average price

C$ 608
WestJet
  • WestJet
  • 8/10-13/10
  • 2 total stops
  • 29h 10m total
  • London to USA
Search Deals
WestJet
  • WestJet
  • 21/10
  • 1 total stop
  • 8h 50m 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 May 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 May 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

Thu 8/10

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

1 stop8h 50m

San Francisco

Tue 13/10

6:00 a.m.-5:20 a.m.

1 stop20h 20m

C$ 397

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 21/10

5:40 a.m.-10:39 a.m.

1 stop7h 59m

San Francisco

Sat 24/10

11:35 a.m.-9:40 p.m.

1 stop7h 05m

C$ 436

LondonSan Francisco

YXU - SFO

YXUSFO

London

Mon 22/6

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

1 stop31h 00m

San Francisco

Sun 28/6

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

1 stop8h 15m

C$ 464

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 8/10

5:40 a.m.-12:34 p.m.

1 stop9h 54m

San Francisco

Tue 13/10

11:10 a.m.-9:20 a.m.

2 stops19h 10m

C$ 469

LondonHonolulu

YXU - HNL

YXUHNL

London

Tue 16/6

2:40 p.m.-8:55 p.m.

2 stops36h 15m

Honolulu

Wed 24/6

9:55 p.m.-5:20 a.m.

2 stops25h 25m

C$ 487

LondonLas Vegas

YXU - LAS

YXULAS

London

Fri 19/6

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

1 stop9h 45m

Las Vegas Harry Reid Intl

Fri 26/6

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

1 stop8h 10m

C$ 531

LondonLas Vegas

YXU - LAS

YXULAS

London

Tue 23/6

6:10 a.m.-12:30 p.m.

2 stops33h 20m

Las Vegas Harry Reid Intl

Tue 30/6

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

2 stops13h 00m

C$ 539

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 8/10

3:30 p.m.-1:16 a.m.

2 stops12h 46m

San Francisco

Tue 13/10

11:00 p.m.-9:20 a.m.

1 stop7h 20m

C$ 567

LondonLas Vegas

YXU - LAS

YXULAS

London

Sat 25/7

5:55 p.m.-3:45 p.m.

2 stops24h 50m

Las Vegas Harry Reid Intl

Tue 28/7

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

1 stop8h 10m

C$ 622

LondonLas Vegas

YXU - LAS

YXULAS

London

Wed 17/6

5:10 a.m.-1:05 p.m.

2 stops10h 55m

Las Vegas Harry Reid Intl

Sat 20/6

4:46 p.m.-2:57 p.m.

2 stops19h 11m

C$ 645

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/5

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, May is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 176). Flying from London, Ontario to USA in March is currently the most expensive (average of C$ 428). 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 May 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
9,695 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,695 reviews
United Airlines
7.4
Good
9,695 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
WestJet
7.2
Good
3,332 reviews
United Airlines
7.4
Good
9,695 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Air Canada
7.1
Good
11,008 reviews
United Airlines
7.4
Good
9,695 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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 59m. London, Ontario and USA are separated by a distance of 3508 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 - Las Vegas Harry Reid 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, May is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 176). Flying from London, Ontario to USA in March is currently the most expensive (average of C$ 428). 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 9 May 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 218AverageC$ 419FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 252AverageC$ 730FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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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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