Find flights
When to book
Airlines
FAQs

Cheap flights from London, ON to the United States from C$ 211

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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
13 Jun — 20 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 14 May 2026.

Thu 9/76:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Wed 29/76:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Deal found 11/5C$ 381
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 14/5C$ 394
Wed 21/105:40 a.m.
YXU
-
SFO
1 stop7h 59m
Air Canada
Sat 24/108:10 a.m.
SFO
-
YXU
2 stops10h 30m
Air Canada
Deal found 12/5C$ 405
Tue 23/62:40 p.m.
YXU
-
LAX
2 stops10h 25m
WestJet
Sun 28/61:15 p.m.
LAX
-
YXU
1 stop13h 05m
WestJet
Deal found 10/5C$ 414
Thu 24/96:10 a.m.
YXU
-
LAX
1 stop9h 15m
WestJet
Mon 28/912:10 p.m.
LAX
-
YXU
2 stops14h 10m
WestJet
Deal found 13/5C$ 428
Sun 14/62:40 p.m.
YXU
-
LAS
1 stop6h 55m
WestJet
Sat 20/66:10 p.m.
LAS
-
YXU
1 stop8h 10m
WestJet
Deal found 12/5C$ 429
Fri 11/96:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Tue 15/93:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Deal found 14/5C$ 433
Thu 24/95:40 a.m.
YXU
-
LAX
1 stop7h 54m
Air Canada
Mon 28/95:05 p.m.
LAX
-
YXU
2 stops13h 15m
Air Canada
Deal found 12/5C$ 450
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 10/5C$ 459
Fri 12/62:40 p.m.
YXU
-
LAS
1 stop6h 55m
WestJet
Fri 19/66:10 p.m.
LAS
-
YXU
1 stop8h 10m
WestJet
Deal found 14/5C$ 464
Wed 10/66:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Wed 17/63:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Deal found 13/5C$ 495
Fri 11/95:40 a.m.
YXU
-
SAN
2 stops12h 22m
Air Canada
Tue 15/97:15 a.m.
SAN
-
YXU
2 stops11h 25m
Air Canada
Deal found 12/5C$ 527

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 May 2026.

Round-trip from

C$ 381

One-way from

C$ 211

Popular in

July

Cheapest in

August

Average price

C$ 697
WestJet
  • WestJet
  • 9/7-29/7
  • 2 total stops
  • 16h 35m total
  • London to USA
Search Deals
WestJet
  • WestJet
  • 11/6
  • 1 total stop
  • 9h 15m total
  • London to USA
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 14 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 14 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$ 394

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

8:10 a.m.-9:40 p.m.

2 stops10h 30m

C$ 405

LondonLos Angeles

YXU - LAX

YXULAX

London

Thu 24/9

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

1 stop9h 15m

Los Angeles

Mon 28/9

12:10 p.m.-5:20 a.m.

2 stops14h 10m

C$ 428

LondonSan Diego

YXU - SAN

YXUSAN

London

Fri 11/9

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

1 stop11h 00m

San Diego

Tue 15/9

3:30 p.m.-5:20 a.m.

1 stop10h 50m

C$ 433

LondonLos Angeles

YXU - LAX

YXULAX

London

Thu 24/9

5:40 a.m.-10:34 a.m.

1 stop7h 54m

Los Angeles

Mon 28/9

5:05 p.m.-9:20 a.m.

2 stops13h 15m

C$ 450

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 12/6

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

1 stop8h 50m

San Francisco

Tue 23/6

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

1 stop20h 20m

C$ 462

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 21/10

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

1 stop8h 50m

San Francisco

Sat 24/10

1:00 p.m.-7:15 p.m.

1 stop27h 15m

C$ 473

LondonLos Angeles

YXU - LAX

YXULAX

London

Tue 23/6

2:40 p.m.-10:05 p.m.

2 stops10h 25m

Los Angeles

Sun 28/6

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

2 stops45h 35m

C$ 480

LondonLos Angeles

YXU - LAX

YXULAX

London

Thu 24/9

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

1 stop9h 15m

Los Angeles

Mon 28/9

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

1 stop8h 15m

C$ 527

LondonSan Diego

YXU - SAN

YXUSAN

London

Fri 11/9

5:40 a.m.-3:02 p.m.

2 stops12h 22m

San Diego

Tue 15/9

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

2 stops12h 00m

C$ 527

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/5

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, August is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 218). Flying from London, Ontario to USA in April is currently the most expensive (average of C$ 458). 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 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
9,711 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Entertainment

7.1

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
9,711 reviews
United Airlines
7.4
Good
9,711 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Entertainment

7.1

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
3,335 reviews
United Airlines
7.4
Good
9,711 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Entertainment

7.1

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
11,034 reviews
United Airlines
7.4
Good
9,711 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Entertainment

7.1

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, August is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 218). Flying from London, Ontario to USA in April is currently the most expensive (average of C$ 458). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to USA

See prices for flight routes from nearby airports that may be better suited for you.
Toronto Island to Cancún flights
Pearson Intl to Cancún flights
Pearson Intl to Vancouver Intl flights
Hamilton to Cancún flights
Pearson Intl to Cozumel flights
Hamilton to Vancouver Intl flights
Region of Waterloo Intl to Cancún flights
Toronto Island to Vancouver Intl flights
Pearson Intl to Abbotsford flights
Pearson Intl to Calgary flights
Pierre Elliott Trudeau Intl to Vancouver Intl flights
Hamilton to Calgary flights
Toronto Island to Newark flights
Pearson Intl to Newark flights
Toronto Island to Calgary flights
Pierre Elliott Trudeau Intl to Calgary flights
Toronto Island to Halifax flights
Pearson Intl to Halifax flights
Hamilton to Halifax flights
Pierre Elliott Trudeau Intl to Cancún flights
Pearson Intl to John F Kennedy Intl flights
Pearson Intl to Fort Lauderdale flights
Region of Waterloo Intl to Calgary flights
Ottawa to Vancouver Intl flights
Pearson Intl to LaGuardia flights
Region of Waterloo Intl to Vancouver Intl flights
Pearson Intl to St. John's flights
Toronto Island to Pierre Elliott Trudeau Intl flights
Pearson Intl to Los Angeles flights
Pearson Intl to Pierre Elliott Trudeau Intl flights
Pierre Elliott Trudeau Intl to Pearson Intl flights
Pearson Intl to Edmonton flights
Pearson Intl to Mexico City flights
Region of Waterloo Intl to Halifax flights
Toronto Island to LaGuardia flights
Pierre Elliott Trudeau Intl to Miami flights
Pearson Intl to Dallas/Fort Worth flights
Pearson Intl to Las Vegas flights
Pearson Intl to Orlando flights
Pierre Elliott Trudeau Intl to Newark flights
Pierre Elliott Trudeau Intl to LaGuardia flights
Pearson Intl to Miami flights
Pierre Elliott Trudeau Intl to Toronto Island flights
Pierre Elliott Trudeau Intl to Mexico City flights
Pearson Intl to Kelowna flights
Hamilton to Edmonton flights
Pearson Intl to Winnipeg flights
Pearson Intl to San Francisco flights
Pearson Intl to Seattle flights
Pierre Elliott Trudeau Intl to John F Kennedy Intl flights

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 14 May 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 218AverageC$ 415FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 253AverageC$ 688FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.