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Cheap flights from the United States to London, ON from C$ 350

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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
15 Aug — 22 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 16 July 2026.

Fri 21/85:30 p.m.
ORD
-
YXU
1 stop10h 50m
WestJet
Fri 28/86:10 a.m.
YXU
-
ORD
1 stop11h 30m
WestJet
Deal found 13/7C$ 496
Fri 28/85:30 p.m.
ORD
-
YXU
1 stop10h 50m
WestJet
Mon 31/85:55 p.m.
YXU
-
ORD
1 stop23h 45m
WestJet
Deal found 12/7C$ 545
Thu 13/812:15 p.m.
DEN
-
YXU
1 stop29h 35m
WestJet
Mon 17/85:55 p.m.
YXU
-
DEN
1 stop19h 25m
WestJet
Deal found 15/7C$ 594
Thu 20/83:05 p.m.
MSP
-
YXU
1 stop27h 45m
WestJet
Mon 24/86:10 a.m.
YXU
-
MSP
2 stops32h 15m
WestJet
Deal found 11/7C$ 648
Fri 28/85:30 p.m.
ORD
-
YXU
1 stop10h 50m
Multiple Airlines
Mon 31/86:10 a.m.
YXU
-
ORD
2 stops25h 07m
Multiple Airlines
Deal found 12/7C$ 750
Sat 8/89:10 a.m.
DEN
-
YXU
3 stops18h 10m
Multiple Airlines
Sat 15/86:20 p.m.
YXU
-
DEN
3 stops31h 32m
Multiple Airlines
Deal found 13/7C$ 752
Tue 11/82:15 p.m.
ORD
-
YXU
2 stops14h 05m
Multiple Airlines
Tue 18/88:40 p.m.
YXU
-
ORD
2 stops21h 17m
Multiple Airlines
Deal found 14/7C$ 784
Mon 17/82:15 p.m.
ORD
-
YXU
2 stops14h 05m
Multiple Airlines
Tue 18/88:40 p.m.
YXU
-
ORD
2 stops21h 17m
Multiple Airlines
Deal found 14/7C$ 798
Fri 28/86:30 a.m.
LGA
-
YXU
3 stops22h 50m
Multiple Airlines
Fri 4/98:40 p.m.
YXU
-
LGA
2 stops13h 07m
Multiple Airlines
Deal found 14/7C$ 799
Sun 26/76:00 a.m.
EWR
-
YXU
2 stops8h 52m
Multiple Airlines
Tue 4/82:40 p.m.
YXU
-
EWR
2 stops17h 34m
Multiple Airlines
Deal found 12/7C$ 812
Sat 29/812:15 p.m.
DEN
-
YXU
2 stops23h 35m
WestJet
Sat 5/95:55 p.m.
YXU
-
DEN
1 stop19h 25m
WestJet
Deal found 15/7C$ 819
Sun 26/710:30 a.m.
LGA
-
YXU
1 stop4h 22m
Air Canada
Tue 4/86:20 p.m.
YXU
-
LGA
1 stop4h 15m
Air Canada
Deal found 12/7C$ 826

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 16 July 2026.

Round-trip from

C$ 496

One-way from

C$ 350
WestJet
  • WestJet
  • 21/8-28/8
  • 2 total stops
  • 22h 20m total
  • USA to London
Search Deals
29/8
  • 29/8
  • 2 total stops
  • 19h 55m 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 16 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

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 21/8

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

1 stop10h 50m

London

Fri 28/8

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

1 stop11h 30m

C$ 496

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Thu 13/8

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

1 stop29h 35m

London

Mon 17/8

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

1 stop19h 25m

C$ 594

MinneapolisLondon

MSP - YXU

MSPYXU

Minneapolis St Paul

Thu 20/8

3:05 p.m.-7:50 p.m.

1 stop27h 45m

London

Mon 24/8

6:10 a.m.-1:25 p.m.

2 stops32h 15m

C$ 648

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Sat 8/8

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

1 stop15h 05m

London

Sat 15/8

6:20 p.m.-11:52 p.m.

3 stops31h 32m

C$ 768

NewarkLondon

EWR - YXU

EWRYXU

Newark

Sun 26/7

6:00 a.m.-2:52 p.m.

2 stops8h 52m

London

Tue 4/8

2:40 p.m.-8:15 a.m.

2 stops17h 35m

C$ 815

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Sun 26/7

10:30 a.m.-2:52 p.m.

1 stop4h 22m

London

Tue 4/8

6:20 p.m.-10:35 p.m.

1 stop4h 15m

C$ 830
Quickest round-trip

NewarkLondon

EWR - YXU

EWRYXU

Newark

Sun 26/7

11:00 a.m.-2:52 p.m.

1 stop3h 52m

London

Tue 4/8

6:20 p.m.-10:35 p.m.

1 stop4h 15m

C$ 830

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Fri 28/8

6:30 a.m.-5:20 a.m.

3 stops22h 50m

London

Fri 4/9

5:40 a.m.-9:25 a.m.

1 stop3h 45m

C$ 843

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 5/9

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

1 stop10h 50m

London

Fri 11/9

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

1 stop11h 30m

C$ 847

TampaLondon

TPA - YXU

TPAYXU

Tampa

Wed 26/8

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

2 stops9h 40m

London

Wed 2/9

10:05 a.m.-8:04 p.m.

2 stops9h 59m

C$ 913

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/7

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 4h 22m. The time it takes to get you to your destination can typically vary by up to 10h 34m. USA and London, Ontario are separated by a distance of 652 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 Chicago O'Hare Intl - London. You may also consider Denver Intl - London or Dallas/Fort Worth - 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
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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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