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Cheap flights from the United States to London, ON from C$ 192

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
6 Jun — 13 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from USA to London

Enter your travel dates to find the best prices.

Cheapest flights from USA to London
Explore the most affordable flight options available from USA to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 May 2026.

Fri 17/77:35 p.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Mon 20/75:55 p.m.
YXU
-
SEA
1 stop27h 50m
WestJet
Deal found 2/5C$ 358
Mon 12/106:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Tue 20/106:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 5/5C$ 396
Mon 12/106:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Wed 21/106:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 6/5C$ 397
Wed 19/87:00 a.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Sat 22/86:10 a.m.
YXU
-
SEA
1 stop15h 35m
WestJet
Deal found 3/5C$ 430
Sun 11/101:00 p.m.
SFO
-
YXU
1 stop13h 20m
WestJet
Wed 21/106:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 4/5C$ 446
Wed 23/97:35 p.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Wed 7/106:10 a.m.
YXU
-
SEA
1 stop15h 35m
WestJet
Deal found 4/5C$ 459
Mon 14/93:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Mon 19/105:55 p.m.
YXU
-
SAN
1 stop23h 15m
WestJet
Deal found 5/5C$ 470
Tue 16/63:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Tue 23/66:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Deal found 2/5C$ 471
Wed 24/66:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Wed 12/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 6/5C$ 476
Mon 24/86:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Wed 26/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 3/5C$ 485
Wed 24/66:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Wed 5/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 6/5C$ 486
Sun 28/66:00 a.m.
SFO
-
YXU
1 stop20h 20m
WestJet
Wed 12/86:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 6/5C$ 493

Find flight deals from USA to London

Keep the following information in mind while searching for USA to London flight deals. Data was last updated 7 May 2026.

Round-trip from

C$ 358

One-way from

C$ 192
WestJet
  • WestJet
  • 17/7-20/7
  • 2 total stops
  • 34h 35m total
  • USA to London
Search Deals
WestJet
  • WestJet
  • 12/10
  • 1 total stop
  • 7h 45m total
  • USA to London
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA to London 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 7 May 2026.
Use the filters below to find and compare flights from the United States to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Wed 19/8

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

1 stop6h 45m

London

Sat 22/8

6:10 a.m.-9:00 p.m.

1 stop17h 50m

C$ 460

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 16/6

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

1 stop10h 50m

London

Tue 23/6

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

1 stop11h 00m

C$ 471

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 24/8

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

1 stop8h 15m

London

Wed 26/8

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

1 stop8h 50m

C$ 485

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Fri 31/7

12:15 p.m.-5:20 a.m.

1 stop15h 05m

London

Sun 9/8

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

1 stop19h 25m

C$ 504

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Thu 13/8

12:15 p.m.-5:20 a.m.

1 stop15h 05m

London

Mon 17/8

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

1 stop19h 25m

C$ 549

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 3/6

6:05 p.m.-1:50 p.m.

2 stops40h 45m

London

Tue 9/6

5:10 a.m.-10:50 a.m.

1 stop8h 40m

C$ 563

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 23/9

6:35 a.m.-9:40 p.m.

2 stops12h 05m

London

Fri 25/9

10:05 a.m.-9:57 p.m.

2 stops14h 52m

C$ 648

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 24/8

11:30 p.m.-2:55 p.m.

2 stops12h 25m

London

Wed 26/8

10:05 a.m.-3:27 p.m.

1 stop8h 22m

C$ 682

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Wed 3/6

10:30 a.m.-1:50 p.m.

2 stops48h 20m

London

Wed 10/6

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

1 stop15h 35m

C$ 683

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 10/10

12:50 a.m.-2:55 p.m.

2 stops11h 05m

London

Wed 21/10

5:40 a.m.-3:45 p.m.

2 stops13h 05m

C$ 700

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/5

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from USA to London

Have a flexible travel schedule? Discover the best time to fly to London from USA 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 the United States to London
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from USA to London. 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 into for flights to London from United States?

    London (YXU), located 8.6 km from the city centre, is the airport you fly into when you book flights from United States to London.

  • How long is the flight from USA to London, Ontario?

    Airlines like WestJet, United Airlines, and Air Canada fly from USA to London, Ontario in about 6h 45m. The time it takes to get you to your destination can typically vary by up to 5h 20m. USA and London, Ontario are separated by a distance of 3219 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from USA to London, Ontario?

    The most popular route from USA to London, Ontario is San Jose - London. You may also consider Newark - London or Chicago O'Hare Intl - London.

  • Can I find deals for flights from USA to London that include hotel bookings?

    Yes. In addition to deals on USA to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from USA to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to London.

  • Can I find deals for business class flights from USA to London?

    Yes. Cheapflights offers flight deals from USA to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Port Stanley
Grand Bend

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Alternative routes for USA to London

See prices for flight routes from nearby airports that may be better suited for you.
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Calgary to Pierre Elliott Trudeau Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Calgary to Region of Waterloo Intl flights
Los Angeles to Pierre Elliott Trudeau Intl flights
Boston to Toronto Island flights
Mexico City to Pierre Elliott Trudeau Intl flights
Winnipeg to Toronto Island flights
Boston to Pearson Intl flights
Winnipeg to Hamilton flights
Dulles Intl to Toronto Island flights
Edmonton to Toronto Island flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Abbotsford to Pierre Elliott Trudeau Intl flights
Halifax to Pierre Elliott Trudeau Intl flights
Saskatoon to Pearson Intl 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 USA to London?

Deals for USA to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from USA to London?

Cheapflights simply makes it quick and affordable to book flights from USA to London 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 USA to London with no change fees?

Yes, we can. To see specific flights from USA to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from USA to London become cheaper?

Yes, Cheapflights offers price alerts on USA to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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