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Cheap flights from the United States to London, ON from C$ 237

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 29/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
19 Dec — 26 Dec1
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 19 November 2025.

Wed 10/1210:20 a.m.MCO - YXU
1 stop6h 45mAir Canada
Tue 16/125:40 p.m.YXU - MCO
1 stop5h 50mAir Canada
Deal found 17/11C$ 603
Mon 8/122:20 p.m.ORD - YXU
1 stop27h 52mWestJet
Thu 11/128:10 p.m.YXU - ORD
1 stop18h 25mWestJet
Deal found 19/11C$ 638
Tue 23/121:35 p.m.MCO - YXU
2 stops19h 11mAir Canada
Sun 4/15:10 a.m.YXU - MCO
2 stops11h 57mAir Canada
Deal found 18/11C$ 651
Sat 22/117:00 a.m.TPA - YXU
2 stops10h 05mUnited Airlines
Mon 24/115:15 a.m.YXU - TPA
2 stops12h 58mUnited Airlines
Deal found 18/11C$ 816
Mon 8/123:26 p.m.ORD - YXU
3 stops26h 46mMultiple Airlines
Thu 11/128:10 p.m.YXU - ORD
1 stop18h 25mMultiple Airlines
Deal found 19/11C$ 858
Wed 31/123:55 p.m.ORD - YXU
1 stop4h 26mAir Canada
Wed 7/19:25 a.m.YXU - ORD
1 stop4h 36mAir Canada
Deal found 18/11C$ 871
Wed 31/124:30 p.m.EWR - YXU
1 stop4h 51mAir Canada
Sun 4/15:40 p.m.YXU - EWR
1 stop5h 08mAir Canada
Deal found 17/11C$ 872
Wed 31/1211:30 a.m.LGA - YXU
1 stop5h 35mAir Canada
Sun 4/19:25 a.m.YXU - LGA
1 stop6h 13mAir Canada
Deal found 17/11C$ 872
Tue 16/1211:05 a.m.EWR - YXU
1 stop6h 00mAir Canada
Thu 18/129:25 a.m.YXU - EWR
1 stop4h 15mAir Canada
Deal found 17/11C$ 914
Fri 12/124:30 p.m.EWR - YXU
1 stop4h 51mAir Canada
Sun 14/129:25 a.m.YXU - EWR
1 stop4h 15mAir Canada
Deal found 18/11C$ 956
Fri 12/123:30 p.m.LGA - YXU
1 stop5h 51mAir Canada
Sun 14/129:25 a.m.YXU - LGA
1 stop5h 03mAir Canada
Deal found 18/11C$ 956
Wed 31/127:59 a.m.EWR - YXU
2 stops13h 22mUnited Airlines
Sun 4/19:25 a.m.YXU - EWR
1 stop4h 15mUnited Airlines
Deal found 17/11C$ 990

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 19 November 2025.

Round-trip from

C$ 603

One-way from

C$ 237
Air Canada
  • Air Canada
  • 19/2-23/2
  • 2 total stops
  • 10h 23m total
  • USA to London
Search Deals
29/1
  • 29/1
  • 2 total stops
  • 21h 14m 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 19 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

TampaLondon

TPA - YXU

TPAYXU

Tampa

Thu 19/2

4:15 p.m.-9:21 p.m.

1 stop5h 06m

London

Mon 23/2

5:40 p.m.-10:57 p.m.

1 stop5h 17m

C$ 603

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Tue 23/12

4:05 p.m.-9:21 p.m.

1 stop5h 16m

London

Sun 4/1

5:10 a.m.-11:15 a.m.

1 stop6h 05m

C$ 603

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Thu 5/2

12:10 p.m.-5:05 p.m.

1 stop4h 55m

London

Mon 9/2

5:10 a.m.-11:15 a.m.

1 stop6h 05m

C$ 603

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Wed 10/12

10:20 a.m.-5:05 p.m.

1 stop6h 45m

London

Tue 16/12

5:40 p.m.-11:30 p.m.

1 stop5h 50m

C$ 603

TampaLondon

TPA - YXU

TPAYXU

Tampa

Fri 23/1

12:05 p.m.-9:21 p.m.

2 stops9h 16m

London

Tue 27/1

5:10 a.m.-11:02 a.m.

1 stop5h 52m

C$ 610

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 8/12

2:20 p.m.-7:12 p.m.

1 stop27h 52m

London

Thu 11/12

8:10 p.m.-1:35 p.m.

1 stop18h 25m

C$ 638

TampaLondon

TPA - YXU

TPAYXU

Tampa

Thu 1/1

7:45 a.m.-5:05 p.m.

1 stop9h 20m

London

Thu 8/1

9:25 a.m.-9:22 p.m.

2 stops11h 57m

C$ 672

TampaLondon

TPA - YXU

TPAYXU

Tampa

Fri 2/1

10:25 p.m.-8:46 a.m.

1 stop10h 21m

London

Fri 9/1

5:40 p.m.-11:07 p.m.

1 stop5h 27m

C$ 812

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sun 25/1

8:22 p.m.-6:34 a.m.

3 stops33h 12m

London

Fri 30/1

7:30 a.m.-8:05 p.m.

3 stops37h 35m

C$ 854

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Fri 2/1

10:00 a.m.-5:05 p.m.

1 stop6h 05m

London

Fri 9/1

5:10 a.m.-10:06 a.m.

1 stop5h 56m

C$ 871

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/11

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$ 74). Flying from USA to London, Ontario in August is currently the most expensive (average of C$ 160). 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 19 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, WestJet, and Delta fly from USA to London, Ontario in about 5h 06m. The time it takes to get you to your destination can typically vary by up to 22h 46m. USA and London, Ontario are separated by a distance of 1677 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$ 273 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$ 460 and C$ 522, respectively.

  • What are the most popular routes from USA to London, Ontario?

    The most popular route from USA to London, Ontario is Dallas/Fort Worth - London. You may also consider Chicago O'Hare Intl - London or Newark - 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$ 74). Flying from USA to London, Ontario in August is currently the most expensive (average of C$ 160). 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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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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