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Cheap flights from the United States to London, ON from C$ 180

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
23 Aug — 30 Aug1
1 adult

Cheap flight deals from USA to London

Keep the following information in mind while searching for USA to London flight deals. Data was last updated 18 August 2025.

Round-trip from

C$ 388

One-way from

C$ 180
WestJet
  • WestJet
  • 22/9-29/9
  • 2 total stops
  • 32h 25m total
  • USA to London
Search Deals
WestJet
  • WestJet
  • 22/9
  • 1 total stop
  • 10h 42m total
  • USA to London
Search Deals

Find flight deals from USA to London

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 18 August 2025.

Mon 22/95:30 p.m.ORD - YXU
1 stop10h 42mWestJet
Mon 29/98:00 p.m.YXU - ORD
1 stop21h 43mWestJet
Deal found 17/8C$ 388
Mon 8/910:15 a.m.SFO - YXU
2 stops15h 57mMultiple Airlines
Tue 16/96:00 a.m.YXU - SFO
1 stop8h 54mMultiple Airlines
Deal found 17/8C$ 409
Sat 11/105:30 p.m.JFK - YXU
1 stop11h 42mWestJet
Sun 19/106:00 a.m.YXU - JFK
1 stop10h 32mWestJet
Deal found 17/8C$ 478
Mon 8/97:30 a.m.SFO - YXU
1 stop18h 42mWestJet
Tue 16/96:00 a.m.YXU - SFO
1 stop8h 54mWestJet
Deal found 17/8C$ 488
Tue 30/95:30 p.m.JFK - YXU
1 stop11h 42mWestJet
Tue 7/106:00 a.m.YXU - JFK
1 stop10h 32mWestJet
Deal found 16/8C$ 488
Mon 22/96:00 a.m.ORD - YXU
2 stops22h 12mMultiple Airlines
Mon 29/98:00 p.m.YXU - ORD
1 stop21h 43mMultiple Airlines
Deal found 17/8C$ 493
Sun 14/95:30 p.m.ORD - YXU
1 stop10h 42mMultiple Airlines
Sun 21/98:00 p.m.YXU - ORD
2 stops28h 59mMultiple Airlines
Deal found 15/8C$ 506
Tue 30/95:30 p.m.ORD - YXU
1 stop10h 42mMultiple Airlines
Tue 7/108:00 p.m.YXU - ORD
2 stops24h 52mMultiple Airlines
Deal found 16/8C$ 508
Wed 1/1010:15 a.m.SFO - YXU
2 stops15h 57mMultiple Airlines
Wed 8/106:00 a.m.YXU - SFO
1 stop8h 54mMultiple Airlines
Deal found 17/8C$ 525
Thu 2/103:50 p.m.MCO - YXU
1 stop5h 37mAir Canada
Thu 9/106:15 a.m.YXU - MCO
2 stops10h 15mAir Canada
Deal found 18/8C$ 526
Fri 12/1210:20 a.m.MCO - YXU
1 stop6h 46mAir Canada
Tue 16/125:40 p.m.YXU - MCO
1 stop5h 50mAir Canada
Deal found 17/8C$ 550
Thu 2/105:30 p.m.ORD - YXU
1 stop10h 42mWestJet
Thu 9/108:00 p.m.YXU - ORD
2 stops41h 39mWestJet
Deal found 18/8C$ 557

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 18 August 2025.
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

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 22/9

5:30 p.m.-5:12 a.m.

1 stop10h 42m

London

Mon 29/9

8:00 p.m.-4:43 p.m.

1 stop21h 43m

C$ 388

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 8/9

10:15 a.m.-5:12 a.m.

2 stops15h 57m

London

Tue 16/9

6:00 a.m.-11:54 a.m.

1 stop8h 54m

C$ 409

New YorkLondon

JFK - YXU

JFKYXU

New York John F Kennedy Intl

Sat 11/10

5:30 p.m.-5:12 a.m.

1 stop11h 42m

London

Sun 19/10

6:00 a.m.-4:32 p.m.

1 stop10h 32m

C$ 478

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 8/9

7:30 a.m.-5:12 a.m.

1 stop18h 42m

London

Tue 16/9

6:00 a.m.-11:54 a.m.

1 stop8h 54m

C$ 488

New YorkLondon

JFK - YXU

JFKYXU

New York John F Kennedy Intl

Tue 30/9

5:30 p.m.-5:12 a.m.

1 stop11h 42m

London

Tue 7/10

6:00 a.m.-4:32 p.m.

1 stop10h 32m

C$ 488

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 22/9

6:00 a.m.-5:12 a.m.

2 stops22h 12m

London

Mon 29/9

8:00 p.m.-4:43 p.m.

1 stop21h 43m

C$ 493

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 14/9

5:30 p.m.-5:12 a.m.

1 stop10h 42m

London

Sun 21/9

8:00 p.m.-11:59 p.m.

2 stops28h 59m

C$ 506

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Tue 30/9

5:30 p.m.-5:12 a.m.

1 stop10h 42m

London

Tue 7/10

8:00 p.m.-7:52 p.m.

2 stops24h 52m

C$ 508

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 1/10

10:15 a.m.-5:12 a.m.

2 stops15h 57m

London

Wed 8/10

6:00 a.m.-11:54 a.m.

1 stop8h 54m

C$ 525

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Thu 2/10

3:50 p.m.-9:27 p.m.

1 stop5h 37m

London

Thu 9/10

6:15 a.m.-4:30 p.m.

2 stops10h 15m

C$ 526

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/8

Showing 1-10 of 60 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, October is the cheapest month in which you can book a flight from USA to London, Ontario (average of C$ 243). Flying from USA to London, Ontario in December is currently the most expensive (average of C$ 478). 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.

What is the cheapest time of day to fly from US to YXU?

Find hourly flight availability from USA to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 August 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from USA to London, Ontario as you normally would.

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 and Air Canada fly from USA to London, Ontario in about 5h 37m. The time it takes to get you to your destination can typically vary by up to 5h 05m. 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 Newark - London. You may also consider Washington, D.C. Dulles Intl - London or Washington, D.C. Reagan-National - 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, October is the cheapest month in which you can book a flight from USA to London, Ontario (average of C$ 243). Flying from USA to London, Ontario in December is currently the most expensive (average of C$ 478). 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?

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Fly with Cheapflights

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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?

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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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