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Cheap flights from the United States to London, ON from C$ 207

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 28/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
13 Jun — 20 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 14 May 2026.

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 13/5C$ 397
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 14/5C$ 442
Wed 26/86:00 a.m.
SFO
-
YXU
1 stop7h 45m
WestJet
Wed 23/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 13/5C$ 448
Sun 11/107:10 a.m.
SFO
-
YXU
2 stops11h 30m
Air Canada
Wed 21/105:40 a.m.
YXU
-
SFO
1 stop7h 59m
Air Canada
Deal found 12/5C$ 462
Tue 8/98:10 a.m.
SFO
-
YXU
2 stops10h 30m
Air Canada
Fri 11/95:40 a.m.
YXU
-
SFO
1 stop7h 59m
Air Canada
Deal found 12/5C$ 490
Tue 8/96:00 a.m.
SFO
-
YXU
1 stop20h 20m
WestJet
Fri 11/96:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 12/5C$ 527
Fri 31/712:15 p.m.
DEN
-
YXU
1 stop15h 05m
WestJet
Sun 9/85:55 p.m.
YXU
-
DEN
1 stop19h 25m
WestJet
Deal found 11/5C$ 575
Wed 27/512:15 p.m.
DEN
-
YXU
1 stop26h 30m
WestJet
Sun 31/55:55 p.m.
YXU
-
DEN
1 stop19h 25m
WestJet
Deal found 14/5C$ 634
Thu 20/812:15 p.m.
DEN
-
YXU
1 stop29h 35m
WestJet
Mon 24/85:55 p.m.
YXU
-
DEN
1 stop19h 25m
WestJet
Deal found 11/5C$ 641
Thu 28/53:50 p.m.
ORD
-
YXU
1 stop4h 48m
Air Canada
Wed 3/65:10 a.m.
YXU
-
ORD
1 stop4h 50m
Air Canada
Deal found 14/5C$ 763
Thu 25/612:15 p.m.
DEN
-
YXU
1 stop15h 05m
WestJet
Thu 2/78:40 p.m.
YXU
-
DEN
1 stop16h 40m
WestJet
Deal found 10/5C$ 789
Fri 26/611:35 a.m.
LGA
-
YXU
1 stop5h 57m
Air Canada
Fri 3/73:30 p.m.
YXU
-
LGA
1 stop3h 30m
Air Canada
Deal found 12/5C$ 790

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 14 May 2026.

Round-trip from

C$ 397

One-way from

C$ 207
WestJet
  • WestJet
  • 12/10-21/10
  • 2 total stops
  • 16h 35m total
  • USA to London
Search Deals
WestJet
  • WestJet
  • 28/7
  • 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 14 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

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 12/10

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

1 stop7h 45m

London

Wed 21/10

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

1 stop8h 50m

C$ 432

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 8/9

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

2 stops10h 30m

London

Fri 11/9

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

1 stop7h 59m

C$ 490

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 13/7

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

1 stop8h 15m

London

Wed 15/7

8:40 p.m.-9:55 p.m.

1 stop28h 15m

C$ 560

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 12/10

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

1 stop7h 20m

London

Wed 21/10

5:40 a.m.-5:23 p.m.

2 stops14h 43m

C$ 625

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Thu 20/8

12:15 p.m.-7:50 p.m.

1 stop29h 35m

London

Mon 24/8

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

1 stop19h 25m

C$ 641

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 13/7

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

1 stop7h 33m

London

Wed 15/7

3:30 p.m.-6:53 a.m.

2 stops18h 23m

C$ 723

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Wed 27/5

12:15 p.m.-4:45 p.m.

1 stop26h 30m

London

Sun 31/5

2:40 p.m.-11:20 a.m.

2 stops22h 40m

C$ 730

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 20/6

11:59 p.m.-2:57 p.m.

2 stops11h 58m

London

Thu 2/7

10:05 a.m.-6:49 p.m.

2 stops11h 44m

C$ 764

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 20/6

11:59 p.m.-2:57 p.m.

2 stops11h 58m

London

Fri 3/7

10:05 a.m.-6:49 p.m.

2 stops11h 44m

C$ 764

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Fri 31/7

12:15 p.m.-4:45 p.m.

1 stop26h 30m

London

Sun 9/8

2:40 p.m.-11:20 a.m.

2 stops22h 40m

C$ 788

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/5

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 Air Canada, WestJet, and Delta fly from USA to London, Ontario in about 8h 15m. The time it takes to get you to your destination can typically vary by up to 3h 30m. USA and London, Ontario are separated by a distance of 3508 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 Newark - London. You may also consider New York LaGuardia - London or New York John F Kennedy 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

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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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