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Cheap flights from the United States to London, ON from C$ 346

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
27 May — 3 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 27 April 2026.

Fri 10/76:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Tue 14/72:40 p.m.
YXU
-
SFO
2 stops10h 15m
WestJet
Deal found 23/4C$ 440
Tue 12/56:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Sun 17/56:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 22/4C$ 473
Tue 21/76:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Thu 23/76:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 26/4C$ 487
Sat 23/55:30 p.m.
ORD
-
YXU
1 stop10h 50m
WestJet
Tue 26/56:10 a.m.
YXU
-
ORD
1 stop11h 30m
WestJet
Deal found 26/4C$ 581
Fri 10/76:05 p.m.
SFO
-
YXU
1 stop8h 15m
Multiple Airlines
Mon 13/75:55 p.m.
YXU
-
SFO
2 stops29h 45m
Multiple Airlines
Deal found 23/4C$ 625
Fri 10/76:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Sun 12/72:40 p.m.
YXU
-
SFO
2 stops10h 15m
WestJet
Deal found 23/4C$ 655
Wed 27/56:00 a.m.
SFO
-
YXU
2 stops52h 50m
WestJet
Wed 3/65:55 p.m.
YXU
-
SFO
1 stop25h 45m
WestJet
Deal found 26/4C$ 676
Tue 21/710:47 p.m.
SFO
-
YXU
1 stop7h 33m
United Airlines
Thu 23/76:20 p.m.
YXU
-
SFO
2 stops10h 37m
United Airlines
Deal found 26/4C$ 693
Tue 21/77:30 p.m.
SFO
-
YXU
2 stops10h 25m
Air Canada
Thu 23/76:20 p.m.
YXU
-
SFO
2 stops10h 37m
Air Canada
Deal found 22/4C$ 700
Wed 14/1011:50 a.m.
MCO
-
YXU
1 stop5h 55m
Air Canada
Wed 28/105:45 a.m.
YXU
-
MCO
1 stop5h 30m
Air Canada
Deal found 27/4C$ 730
Sat 24/1012:00 p.m.
TPA
-
YXU
2 stops9h 40m
Air Canada
Tue 27/103:25 p.m.
YXU
-
TPA
1 stop6h 12m
Air Canada
Deal found 26/4C$ 742
Sat 6/611:00 a.m.
EWR
-
YXU
1 stop3h 58m
Air Canada
Sat 13/63:30 p.m.
YXU
-
EWR
1 stop3h 35m
Air Canada
Deal found 22/4C$ 746

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 27 April 2026.

Round-trip from

C$ 440

One-way from

C$ 346
WestJet
  • WestJet
  • 10/7-13/7
  • 2 total stops
  • 39h 15m total
  • USA to London
Search Deals
5/6
  • 5/6
  • 3 total stops
  • 43h 09m 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 27 April 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

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 21/7

6:00 a.m.-4:45 p.m.

1 stop7h 45m

London

Thu 23/7

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

1 stop8h 50m

C$ 487

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 23/5

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

1 stop10h 50m

London

Tue 26/5

6:10 a.m.-4:40 p.m.

1 stop11h 30m

C$ 581

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 21/7

10:47 p.m.-9:20 a.m.

1 stop7h 33m

London

Thu 23/7

5:10 a.m.-3:09 p.m.

2 stops12h 59m

C$ 693

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 21/7

10:47 p.m.-9:20 a.m.

1 stop7h 33m

London

Thu 23/7

5:10 a.m.-3:09 p.m.

2 stops12h 59m

C$ 693

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 10/7

11:47 p.m.-2:55 p.m.

2 stops12h 08m

London

Tue 14/7

5:10 a.m.-2:09 p.m.

2 stops11h 59m

C$ 704

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Wed 14/10

11:50 a.m.-5:45 p.m.

1 stop5h 55m

London

Wed 28/10

5:45 a.m.-11:15 a.m.

1 stop5h 30m

C$ 730

TampaLondon

TPA - YXU

TPAYXU

Tampa

Sat 24/10

12:00 p.m.-9:40 p.m.

2 stops9h 40m

London

Tue 27/10

3:25 p.m.-9:37 p.m.

1 stop6h 12m

C$ 742

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Wed 17/6

12:05 p.m.-5:33 p.m.

1 stop5h 28m

London

Tue 23/6

5:10 a.m.-10:52 a.m.

1 stop5h 42m

C$ 765

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Fri 19/6

11:50 a.m.-5:32 p.m.

1 stop5h 42m

London

Tue 23/6

5:10 a.m.-10:52 a.m.

1 stop5h 42m

C$ 765

TampaLondon

TPA - YXU

TPAYXU

Tampa

Wed 10/6

9:10 p.m.-9:18 a.m.

1 stop12h 08m

London

Wed 17/6

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

1 stop6h 00m

C$ 799

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/4

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, Air Canada, and Delta fly from USA to London, Ontario in about 5h 55m. The time it takes to get you to your destination can typically vary by up to 5h 34m. USA and London, Ontario are separated by a distance of 1622 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 Dallas/Fort Worth - London. You may also consider Denver Intl - London or San Jose - 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

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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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