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Cheap flights from the United States to London, ON from C$ 242

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
22 Aug — 29 Aug1
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 23 July 2026.

Sun 6/912:15 p.m.
DEN
-
YXU
1 stop15h 05m
WestJet
Sun 13/95:55 p.m.
YXU
-
DEN
1 stop19h 25m
WestJet
Deal found 23/7C$ 554
Thu 13/812:15 p.m.
DEN
-
YXU
1 stop15h 05m
WestJet
Mon 17/85:55 p.m.
YXU
-
DEN
1 stop19h 25m
WestJet
Deal found 18/7C$ 598
Sun 6/912:15 p.m.
DEN
-
YXU
1 stop15h 05m
Multiple Airlines
Sun 13/96:10 a.m.
YXU
-
DEN
2 stops29h 30m
Multiple Airlines
Deal found 23/7C$ 613
Sat 5/98:31 a.m.
DEN
-
YXU
2 stops18h 49m
Multiple Airlines
Sat 12/96:10 a.m.
YXU
-
DEN
1 stop31h 10m
Multiple Airlines
Deal found 22/7C$ 702
Thu 20/85:30 p.m.
ORD
-
YXU
1 stop10h 50m
WestJet
Thu 27/86:10 a.m.
YXU
-
ORD
1 stop11h 30m
WestJet
Deal found 22/7C$ 741
Tue 25/810:40 a.m.
LGA
-
YXU
2 stops18h 40m
Multiple Airlines
Fri 28/88:40 p.m.
YXU
-
LGA
2 stops13h 07m
Multiple Airlines
Deal found 19/7C$ 757
Mon 31/85:30 p.m.
ORD
-
YXU
1 stop22h 15m
Multiple Airlines
Sun 6/96:10 a.m.
YXU
-
ORD
2 stops24h 49m
Multiple Airlines
Deal found 19/7C$ 803
Thu 3/92:41 p.m.
ORD
-
YXU
2 stops37h 39m
Multiple Airlines
Thu 10/95:55 p.m.
YXU
-
ORD
1 stop23h 45m
Multiple Airlines
Deal found 19/7C$ 823
Thu 24/910:40 p.m.
ORD
-
YXU
2 stops29h 40m
Multiple Airlines
Thu 1/106:10 a.m.
YXU
-
ORD
1 stop11h 30m
Multiple Airlines
Deal found 22/7C$ 850
Sat 5/912:15 p.m.
DEN
-
YXU
1 stop15h 05m
WestJet
Sat 12/96:10 a.m.
YXU
-
DEN
1 stop31h 10m
WestJet
Deal found 22/7C$ 891
Fri 21/86:25 a.m.
EWR
-
YXU
3 stops22h 55m
Multiple Airlines
Sun 23/82:40 p.m.
YXU
-
EWR
2 stops25h 05m
Multiple Airlines
Deal found 19/7C$ 896
Mon 31/85:30 p.m.
ORD
-
YXU
3 stops19h 20m
WestJet
Sun 6/96:10 a.m.
YXU
-
ORD
1 stop11h 30m
WestJet
Deal found 19/7C$ 898

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 23 July 2026.

Round-trip from

C$ 554

One-way from

C$ 242
WestJet
  • WestJet
  • 6/9-13/9
  • 2 total stops
  • 34h 30m total
  • USA to London
Search Deals
WestJet
  • WestJet
  • 6/9
  • 1 total stop
  • 15h 05m 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 23 July 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

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Sun 6/9

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

1 stop15h 05m

London

Sun 13/9

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

1 stop19h 25m

C$ 554

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$ 598

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Sat 5/9

8:31 a.m.-5:20 a.m.

2 stops18h 49m

London

Sat 12/9

6:10 a.m.-11:20 a.m.

1 stop31h 10m

C$ 702

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 31/8

5:30 p.m.-4:45 p.m.

1 stop22h 15m

London

Sun 6/9

6:10 a.m.-5:59 a.m.

2 stops24h 49m

C$ 803

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 20/8

5:30 p.m.-1:50 p.m.

2 stops19h 20m

London

Thu 27/8

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

1 stop11h 30m

C$ 816

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 31/8

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

1 stop10h 50m

London

Sun 6/9

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

1 stop11h 30m

C$ 933

NewarkLondon

EWR - YXU

EWRYXU

Newark

Tue 25/8

4:25 p.m.-4:45 p.m.

3 stops24h 20m

London

Fri 28/8

2:40 p.m.-3:45 p.m.

3 stops25h 05m

C$ 946

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Mon 24/8

8:30 p.m.-1:50 p.m.

2 stops17h 20m

London

Sun 30/8

2:40 p.m.-7:35 a.m.

2 stops16h 55m

C$ 961

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Fri 21/8

10:00 a.m.-5:20 a.m.

3 stops19h 20m

London

Fri 28/8

8:40 p.m.-4:15 p.m.

1 stop19h 35m

C$ 961

NewarkLondon

EWR - YXU

EWRYXU

Newark

Mon 24/8

6:40 p.m.-4:45 p.m.

2 stops22h 05m

London

Sun 30/8

10:05 a.m.-1:37 p.m.

1 stop3h 32m

C$ 975

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/7

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 United Airlines fly from USA to London, Ontario in about 5h 52m. The time it takes to get you to your destination can typically vary by up to 9h 13m. 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 Orlando - London. You may also consider Newark - London or Tampa - 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
Grand Bend
Port Stanley

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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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