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Cheap flights from the United States to London, ON from C$ 263

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
12 Mar — 19 Mar1
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 10 February 2026.

Mon 25/55:30 p.m.
ORD
-
YXU
1 stop10h 55m
WestJet
Thu 28/56:15 a.m.
YXU
-
ORD
1 stop11h 25m
WestJet
Deal found 9/2C$ 384
Thu 26/25:45 a.m.
SEA
-
YXU
2 stops12h 36m
Air Canada
Sat 28/25:40 p.m.
YXU
-
SEA
1 stop7h 36m
Air Canada
Deal found 8/2C$ 425
Fri 27/38:00 a.m.
SEA
-
YXU
1 stop10h 21m
Air Canada
Fri 3/45:40 p.m.
YXU
-
SEA
2 stops18h 53m
Air Canada
Deal found 9/2C$ 485
Wed 11/31:55 p.m.
MSP
-
YXU
2 stops15h 40m
WestJet
Wed 18/38:10 p.m.
YXU
-
MSP
2 stops17h 56m
WestJet
Deal found 9/2C$ 487
Sat 23/55:30 p.m.
ORD
-
YXU
1 stop10h 55m
WestJet
Tue 26/55:55 p.m.
YXU
-
ORD
1 stop23h 45m
WestJet
Deal found 9/2C$ 534
Tue 24/31:55 p.m.
MSP
-
YXU
2 stops15h 40m
WestJet
Tue 31/38:10 p.m.
YXU
-
MSP
2 stops17h 56m
WestJet
Deal found 7/2C$ 564
Mon 22/63:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Mon 29/65:55 p.m.
YXU
-
SAN
1 stop23h 15m
WestJet
Deal found 9/2C$ 628
Wed 25/35:40 a.m.
SEA
-
YXU
2 stops12h 41m
Air Canada
Wed 1/45:10 a.m.
YXU
-
SEA
2 stops12h 53m
Air Canada
Deal found 7/2C$ 666
Thu 26/38:50 p.m.
SAN
-
YXU
2 stops8h 56m
United Airlines
Thu 2/45:10 a.m.
YXU
-
SAN
1 stop9h 43m
United Airlines
Deal found 9/2C$ 674
Tue 24/39:15 p.m.
ATL
-
YXU
2 stops33h 20m
Multiple Airlines
Tue 31/38:10 p.m.
YXU
-
ATL
1 stop10h 43m
Multiple Airlines
Deal found 7/2C$ 687
Fri 6/36:55 p.m.
SAN
-
YXU
2 stops19h 10m
United Airlines
Mon 9/35:40 p.m.
YXU
-
SAN
2 stops21h 10m
United Airlines
Deal found 9/2C$ 694
Wed 25/33:10 p.m.
SEA
-
YXU
1 stop12h 25m
Multiple Airlines
Wed 1/48:10 p.m.
YXU
-
SEA
1 stop26h 41m
Multiple Airlines
Deal found 7/2C$ 701

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 10 February 2026.

Round-trip from

C$ 384

One-way from

C$ 294
WestJet
  • WestJet
  • 25/5-28/5
  • 2 total stops
  • 22h 20m total
  • USA to London
Search Deals
25/3
  • 25/3
  • 2 total stops
  • 19h 50m 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 10 February 2026.
Use the filters below to find and compare flights from the United States to London that are best for you.

Fly from

USA

Fly to

London

Route

Depart

Return

Price

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 26/2

5:45 a.m.-9:21 p.m.

2 stops12h 36m

London

Sat 28/2

5:40 p.m.-10:16 p.m.

1 stop7h 36m

C$ 425

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Fri 27/3

8:00 a.m.-9:21 p.m.

1 stop10h 21m

London

Fri 3/4

5:40 p.m.-9:33 a.m.

2 stops18h 53m

C$ 485

MinneapolisLondon

MSP - YXU

MSPYXU

Minneapolis St Paul

Wed 11/3

1:55 p.m.-6:35 a.m.

2 stops15h 40m

London

Wed 18/3

8:10 p.m.-1:06 p.m.

2 stops17h 56m

C$ 487

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 23/5

5:30 p.m.-5:25 a.m.

1 stop10h 55m

London

Tue 26/5

5:55 p.m.-4:40 p.m.

1 stop23h 45m

C$ 534

MinneapolisLondon

MSP - YXU

MSPYXU

Minneapolis St Paul

Tue 24/3

1:55 p.m.-6:35 a.m.

2 stops15h 40m

London

Tue 31/3

8:10 p.m.-1:06 p.m.

2 stops17h 56m

C$ 564

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 22/6

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Mon 29/6

5:55 p.m.-2:10 p.m.

1 stop23h 15m

C$ 628

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Wed 25/3

5:40 a.m.-9:21 p.m.

2 stops12h 41m

London

Wed 1/4

5:10 a.m.-3:03 p.m.

2 stops12h 53m

C$ 666

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 26/3

8:50 p.m.-8:46 a.m.

2 stops8h 56m

London

Thu 2/4

5:10 a.m.-11:53 a.m.

1 stop9h 43m

C$ 674

AtlantaLondon

ATL - YXU

ATLYXU

Atlanta Hartsfield-Jackson

Tue 24/3

9:15 p.m.-6:35 a.m.

2 stops33h 20m

London

Tue 31/3

8:10 p.m.-6:53 a.m.

1 stop10h 43m

C$ 687

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 6/3

6:55 p.m.-5:05 p.m.

2 stops19h 10m

London

Mon 9/3

5:40 p.m.-11:50 a.m.

2 stops21h 10m

C$ 694

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/2

Showing 1-10 of 51 results
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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

What is the cheapest month to book a flight from USA to London, Ontario?

Currently, March is the cheapest month in which you can book a flight from USA to London, Ontario (average of C$ 72). Flying from USA to London, Ontario in August is currently the most expensive (average of C$ 152). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 56m. The time it takes to get you to your destination can typically vary by up to 6h 44m. USA and London, Ontario are separated by a distance of 3331 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 Houston Hobby - London. You may also consider Chicago O'Hare Intl - London or Atlanta Hartsfield-Jackson - 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.

  • What is the cheapest month to book a flight from USA to London, Ontario?

    Currently, March is the cheapest month in which you can book a flight from USA to London, Ontario (average of C$ 72). Flying from USA to London, Ontario in August is currently the most expensive (average of C$ 152). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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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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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