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Cheap flights from the United States to London, ON from C$ 234

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 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
26 Dec — 2 Jan1
1 adult
1 adult, Economy, 0 bags

Find 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 26 November 2025.

Thu 25/124:30 p.m.EWR - YXU
1 stop4h 51mAir Canada
Wed 31/129:25 a.m.YXU - EWR
1 stop4h 15mAir Canada
Deal found 26/11C$ 760
Wed 10/129:40 a.m.DCA - YXU
1 stop7h 25mAir Canada
Fri 12/125:10 a.m.YXU - DCA
1 stop3h 45mAir Canada
Deal found 26/11C$ 766
Wed 31/1211:39 a.m.DFW - YXU
3 stops17h 55mMultiple Airlines
Fri 9/17:30 a.m.YXU - DFW
3 stops37h 25mMultiple Airlines
Deal found 24/11C$ 865
Wed 10/127:30 a.m.DCA - YXU
2 stops9h 35mUnited Airlines
Fri 12/125:10 a.m.YXU - DCA
1 stop3h 45mUnited Airlines
Deal found 26/11C$ 869
Thu 25/123:30 p.m.LGA - YXU
1 stop5h 51mUnited Airlines
Sun 11/19:25 a.m.YXU - LGA
1 stop6h 13mUnited Airlines
Deal found 26/11C$ 873
Thu 25/1211:05 a.m.EWR - YXU
1 stop6h 00mUnited Airlines
Sun 11/19:25 a.m.YXU - EWR
1 stop6h 18mUnited Airlines
Deal found 26/11C$ 873
Fri 26/124:20 p.m.LGA - YXU
1 stop5h 01mAir Canada
Sat 3/15:10 a.m.YXU - LGA
1 stop5h 33mAir Canada
Deal found 23/11C$ 876
Fri 26/1211:05 a.m.EWR - YXU
1 stop6h 00mAir Canada
Sat 3/19:25 a.m.YXU - EWR
1 stop4h 15mAir Canada
Deal found 23/11C$ 876
Tue 2/122:01 p.m.ORD - YXU
3 stops28h 11mMultiple Airlines
Tue 9/128:10 p.m.YXU - ORD
3 stops28h 59mMultiple Airlines
Deal found 25/11C$ 897
Tue 23/122:00 p.m.ORD - YXU
1 stop6h 21mAir Canada
Fri 26/129:25 a.m.YXU - ORD
1 stop6h 45mAir Canada
Deal found 26/11C$ 917
Thu 25/124:50 p.m.JFK - YXU
1 stop4h 31mUnited Airlines
Sun 11/15:40 p.m.YXU - JFK
1 stop4h 59mUnited Airlines
Deal found 26/11C$ 995
Mon 29/124:30 p.m.EWR - YXU
1 stop4h 51mUnited Airlines
Fri 2/19:25 a.m.YXU - EWR
2 stops12h 19mUnited Airlines
Deal found 25/11C$ 1,037

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 26 November 2025.

Round-trip from

C$ 468

One-way from

C$ 234
Air Canada
  • Air Canada
  • 20/1-22/1
  • 3 total stops
  • 19h 35m total
  • USA to London
Search Deals
24/1
  • 24/1
  • 2 total stops
  • 32h 04m 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 26 November 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

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 20/1

7:30 a.m.-9:21 p.m.

2 stops10h 51m

London

Thu 22/1

5:10 a.m.-10:54 a.m.

1 stop8h 44m

C$ 468

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 19/1

12:43 a.m.-5:05 p.m.

2 stops13h 22m

London

Thu 22/1

5:10 a.m.-10:54 a.m.

1 stop8h 44m

C$ 581

NewarkLondon

EWR - YXU

EWRYXU

Newark

Thu 8/1

5:30 a.m.-6:34 a.m.

3 stops25h 04m

London

Thu 15/1

8:10 p.m.-5:25 p.m.

3 stops21h 15m

C$ 655

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 14/1

6:05 p.m.-8:46 a.m.

2 stops11h 41m

London

Sat 17/1

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

1 stop9h 43m

C$ 722

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 20/1

12:55 p.m.-9:21 p.m.

2 stops8h 26m

London

Thu 22/1

5:10 a.m.-8:55 a.m.

1 stop3h 45m

C$ 741

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 10/12

9:40 a.m.-5:05 p.m.

1 stop7h 25m

London

Fri 12/12

5:10 a.m.-8:55 a.m.

1 stop3h 45m

C$ 766

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 18/1

3:55 p.m.-9:21 p.m.

1 stop4h 26m

London

Thu 22/1

5:10 a.m.-9:13 a.m.

1 stop5h 03m

C$ 768

NewarkLondon

EWR - YXU

EWRYXU

Newark

Fri 9/1

11:05 a.m.-5:05 p.m.

1 stop6h 00m

London

Thu 15/1

9:25 a.m.-3:43 p.m.

1 stop6h 18m

C$ 768

NewarkLondon

EWR - YXU

EWRYXU

Newark

Fri 9/1

11:05 a.m.-5:05 p.m.

1 stop6h 00m

London

Fri 16/1

9:25 a.m.-3:43 p.m.

1 stop6h 18m

C$ 768

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Fri 9/1

4:20 p.m.-9:21 p.m.

1 stop5h 01m

London

Tue 13/1

5:10 a.m.-10:43 a.m.

1 stop5h 33m

C$ 768

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/11

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, March is the cheapest month in which you can book a flight from USA to London, Ontario (average of C$ 75). Flying from USA to London, Ontario in August is currently the most expensive (average of C$ 161). 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 26 November 2025.

When flying from USA to London, Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 18% versus a flight in the afternoon.

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, United Airlines, and WestJet fly from USA to London, Ontario in about 10h 51m. The time it takes to get you to your destination can typically vary by up to 2h 31m. USA and London, Ontario are separated by a distance of 3508 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from USA to London, Ontario one-way?

    C$ 401 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on United Airlines and WestJet, with prices starting from C$ 409 and C$ 514, respectively.

  • 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 John F Kennedy Intl - London or New York LaGuardia - 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$ 75). Flying from USA to London, Ontario in August is currently the most expensive (average of C$ 161). 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
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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?

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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