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Cheap flights from the United States to London, ON from C$ 307

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 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
8 Jul — 15 Jul1
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 8 June 2026.

Sun 19/77:35 p.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Sun 26/75:55 p.m.
YXU
-
SEA
1 stop30h 05m
WestJet
Deal found 7/6C$ 617
Sat 4/77:00 a.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Sun 1/118:00 p.m.
YXU
-
SEA
1 stop20h 20m
WestJet
Deal found 6/6C$ 619
Sat 4/77:00 a.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Wed 11/118:00 p.m.
YXU
-
SEA
1 stop20h 20m
WestJet
Deal found 6/6C$ 767
Wed 14/107:35 p.m.
SEA
-
YXU
1 stop6h 45m
WestJet
Thu 15/105:55 p.m.
YXU
-
SEA
1 stop18h 45m
WestJet
Deal found 7/6C$ 769
Sat 4/75:45 a.m.
SEA
-
YXU
2 stops11h 47m
Air Canada
Sat 11/73:30 p.m.
YXU
-
SEA
2 stops10h 12m
Air Canada
Deal found 6/6C$ 788
Sat 18/712:15 p.m.
DEN
-
YXU
1 stop15h 05m
WestJet
Sat 25/75:55 p.m.
YXU
-
DEN
1 stop19h 25m
WestJet
Deal found 3/6C$ 804
Tue 1/912:15 p.m.
DEN
-
YXU
1 stop15h 05m
WestJet
Sat 5/95:55 p.m.
YXU
-
DEN
1 stop19h 25m
WestJet
Deal found 3/6C$ 821
Tue 25/812:15 p.m.
DEN
-
YXU
1 stop15h 05m
Multiple Airlines
Mon 31/86:10 a.m.
YXU
-
DEN
2 stops20h 30m
Multiple Airlines
Deal found 3/6C$ 860
Thu 23/711:00 a.m.
EWR
-
YXU
1 stop3h 52m
Air Canada
Tue 28/710:05 a.m.
YXU
-
EWR
1 stop3h 32m
Air Canada
Deal found 6/6C$ 868
Wed 22/75:30 p.m.
ORD
-
YXU
1 stop10h 50m
Multiple Airlines
Wed 29/710:05 a.m.
YXU
-
ORD
2 stops11h 00m
Multiple Airlines
Deal found 7/6C$ 884
Wed 22/78:45 a.m.
ORD
-
YXU
2 stops7h 57m
Air Canada
Wed 29/710:05 a.m.
YXU
-
ORD
2 stops11h 00m
Air Canada
Deal found 7/6C$ 895
Wed 23/124:30 p.m.
EWR
-
YXU
1 stop5h 16m
Air Canada
Sat 2/13:25 p.m.
YXU
-
EWR
1 stop4h 24m
Air Canada
Deal found 3/6C$ 895

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 8 June 2026.

Round-trip from

C$ 617

One-way from

C$ 307
WestJet
  • WestJet
  • 19/7-26/7
  • 2 total stops
  • 36h 50m total
  • USA to London
Search Deals
WestJet
  • WestJet
  • 28/8
  • 1 total stop
  • 6h 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 8 June 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

Sat 4/7

5:45 a.m.-5:42 p.m.

2 stops8h 57m

London

Sun 1/11

9:45 a.m.-6:22 p.m.

2 stops11h 37m

C$ 788

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Sat 18/7

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

1 stop15h 05m

London

Sat 25/7

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

1 stop19h 25m

C$ 804

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Tue 1/9

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

1 stop15h 05m

London

Sat 5/9

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

1 stop19h 25m

C$ 821

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Tue 25/8

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

1 stop15h 05m

London

Mon 31/8

6:10 a.m.-12:40 a.m.

2 stops20h 30m

C$ 860

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sun 19/7

7:35 p.m.-5:20 a.m.

1 stop6h 45m

London

Sun 26/7

2:40 p.m.-6:45 p.m.

3 stops31h 05m

C$ 868

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Wed 22/7

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

1 stop10h 50m

London

Wed 29/7

10:05 a.m.-2:55 p.m.

1 stop5h 50m

C$ 884

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 24/9

7:35 p.m.-5:20 a.m.

1 stop6h 45m

London

Mon 28/9

5:55 p.m.-9:40 a.m.

1 stop18h 45m

C$ 910

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Wed 14/10

7:35 p.m.-5:20 a.m.

1 stop6h 45m

London

Thu 15/10

5:55 p.m.-9:40 a.m.

1 stop18h 45m

C$ 910

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Wed 25/11

8:00 a.m.-3:06 p.m.

1 stop7h 06m

London

Sun 29/11

9:45 a.m.-3:05 p.m.

1 stop5h 20m

C$ 938

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Tue 7/7

11:50 a.m.-5:42 p.m.

1 stop5h 52m

London

Tue 28/7

10:05 a.m.-6:47 p.m.

2 stops8h 42m

C$ 951

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/6

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 United Airlines fly from USA to London, Ontario in about 8h 57m. The time it takes to get you to your destination can typically vary by up to 6h 08m. 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 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

See prices for flight routes from nearby airports that may be better suited for you.
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LaGuardia to Toronto Island flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
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Winnipeg to Hamilton flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Edmonton to Toronto Island flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Los Angeles to Pierre Elliott Trudeau Intl flights
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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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