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Cheap flights from the United States to London, ON from C$ 228

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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
25 Jan — 1 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from USA to London

Enter your travel dates to find the best prices.

Best flights from USA to London
Discover carefully curated flight deals from USA to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 26 December 2025.

Thu 29/18:00 p.m.SEA - YXU
2 stops9h 46mAir Canada
Sun 1/25:40 p.m.YXU - SEA
1 stop7h 36mAir Canada
Deal found 23/12C$ 373
Sat 7/27:00 a.m.SEA - YXU
2 stops11h 21mUnited Airlines
Sat 14/25:40 p.m.YXU - SEA
1 stop7h 36mUnited Airlines
Deal found 23/12C$ 379
Mon 9/28:25 a.m.ATL - YXU
2 stops22h 10mWestJet
Mon 16/28:10 p.m.YXU - ATL
1 stop10h 43mWestJet
Deal found 25/12C$ 423
Wed 4/32:36 p.m.SJC - YXU
2 stops36h 59mMultiple Airlines
Wed 18/38:10 p.m.YXU - SJC
2 stops40h 18mMultiple Airlines
Deal found 24/12C$ 710
Thu 29/112:57 p.m.SEA - YXU
3 stops25h 08mUnited Airlines
Sun 1/25:40 p.m.YXU - SEA
1 stop7h 36mUnited Airlines
Deal found 23/12C$ 386
Sun 8/28:10 a.m.SEA - YXU
1 stop10h 11mAir Canada
Sun 15/25:40 p.m.YXU - SEA
1 stop7h 36mAir Canada
Deal found 25/12C$ 399
Fri 9/18:00 p.m.SEA - YXU
2 stops9h 46mAir Canada
Tue 13/19:50 a.m.YXU - SEA
1 stop15h 26mAir Canada
Deal found 25/12C$ 406
Thu 22/18:25 a.m.ATL - YXU
2 stops22h 09mWestJet
Mon 26/18:10 p.m.YXU - ATL
1 stop10h 42mWestJet
Deal found 23/12C$ 598
Fri 16/111:15 a.m.MCO - YXU
2 stops10h 05mUnited Airlines
Thu 22/15:10 a.m.YXU - MCO
2 stops8h 59mUnited Airlines
Deal found 23/12C$ 567
Thu 15/110:20 a.m.MCO - YXU
1 stop6h 45mAir Canada
Wed 21/15:40 p.m.YXU - MCO
1 stop6h 10mAir Canada
Deal found 24/12C$ 533
Wed 21/14:15 p.m.ATL - YXU
1 stop14h 19mWestJet
Thu 22/18:10 p.m.YXU - ATL
1 stop10h 42mWestJet
Deal found 25/12C$ 602
Wed 18/212:10 p.m.MCO - YXU
1 stop4h 55mAir Canada
Sun 22/25:40 p.m.YXU - MCO
1 stop6h 10mAir Canada
Deal found 24/12C$ 533
Fri 15/57:59 p.m.SJC - YXU
2 stops20h 08mMultiple Airlines
Sat 30/56:00 a.m.YXU - SJC
2 stops17h 00mMultiple Airlines
Deal found 25/12C$ 788
Thu 15/112:10 p.m.MCO - YXU
1 stop4h 55mAir Canada
Thu 22/15:40 p.m.YXU - MCO
1 stop6h 10mAir Canada
Deal found 24/12C$ 563
Sat 7/212:35 p.m.IAD - YXU
1 stop4h 30mUnited Airlines
Sat 14/29:25 a.m.YXU - IAD
1 stop6h 24mUnited Airlines
Deal found 24/12C$ 725
Thu 9/41:55 p.m.MSP - YXU
2 stops15h 40mWestJet
Mon 13/48:10 p.m.YXU - MSP
2 stops17h 56mWestJet
Deal found 24/12C$ 726
Mon 9/28:25 a.m.ATL - YXU
2 stops22h 10mMultiple Airlines
Mon 16/28:10 p.m.YXU - ATL
3 stops41h 57mMultiple Airlines
Deal found 25/12C$ 800
Fri 16/112:10 p.m.MCO - YXU
1 stop9h 10mAir Canada
Mon 19/15:40 p.m.YXU - MCO
1 stop6h 10mAir Canada
Deal found 24/12C$ 566
Sat 7/212:00 p.m.EWR - YXU
1 stop5h 05mUnited Airlines
Sat 14/25:40 p.m.YXU - EWR
1 stop5h 08mUnited Airlines
Deal found 23/12C$ 756
Wed 14/18:30 a.m.MCO - YXU
2 stops8h 35mAir Canada
Thu 22/15:40 p.m.YXU - MCO
1 stop6h 10mAir Canada
Deal found 24/12C$ 574
Fri 16/18:00 a.m.MCO - YXU
1 stop9h 05mAir Canada
Sun 18/15:10 a.m.YXU - MCO
2 stops11h 57mAir Canada
Deal found 24/12C$ 577
Mon 19/18:29 a.m.IAD - YXU
2 stops8h 36mUnited Airlines
Fri 23/19:50 a.m.YXU - IAD
1 stop5h 56mUnited Airlines
Deal found 24/12C$ 856
Tue 13/14:05 p.m.MCO - YXU
1 stop5h 16mAir Canada
Fri 23/19:50 a.m.YXU - MCO
2 stops9h 55mAir Canada
Deal found 24/12C$ 592
Wed 21/16:55 p.m.MSP - YXU
1 stop10h 39mWestJet
Wed 28/18:10 p.m.YXU - MSP
2 stops17h 55mWestJet
Deal found 24/12C$ 997
Thu 15/18:30 a.m.MCO - YXU
2 stops8h 35mAir Canada
Fri 23/19:50 a.m.YXU - MCO
2 stops9h 55mAir Canada
Deal found 24/12C$ 603
Thu 22/11:15 p.m.ATL - YXU
2 stops8h 06mUnited Airlines
Mon 26/19:50 a.m.YXU - ATL
2 stops10h 05mUnited Airlines
Deal found 23/12C$ 915
Mon 19/14:30 p.m.IAD - YXU
1 stop4h 50mAir Canada
Fri 23/19:50 a.m.YXU - IAD
1 stop5h 56mAir Canada
Deal found 24/12C$ 725
Mon 25/55:45 a.m.SDF - YXU
2 stops15h 53mUnited Airlines
Tue 26/59:30 a.m.YXU - SDF
2 stops9h 39mUnited Airlines
Deal found 25/12C$ 1,062
Tue 21/44:30 p.m.IAD - YXU
1 stop4h 48mAir Canada
Fri 24/49:25 a.m.YXU - IAD
1 stop6h 14mAir Canada
Deal found 24/12C$ 725
Mon 12/18:40 a.m.SJC - YXU
2 stops9h 40mUnited Airlines
Thu 15/15:10 a.m.YXU - SJC
2 stops11h 29mUnited Airlines
Deal found 23/12C$ 1,064

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 26 December 2025.

Round-trip from

C$ 373

One-way from

C$ 228
WestJet
  • WestJet
  • 8/2-15/2
  • 3 total stops
  • 36h 49m total
  • USA to London
Search Deals
7/2
  • 7/2
  • 2 total stops
  • 32h 05m 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 December 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

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 29/1

8:00 p.m.-8:46 a.m.

2 stops9h 46m

London

Sun 1/2

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

1 stop7h 36m

C$ 373

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sat 7/2

7:00 a.m.-9:21 p.m.

2 stops11h 21m

London

Sat 14/2

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

1 stop7h 36m

C$ 379

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 29/1

12:57 p.m.-5:05 p.m.

3 stops25h 08m

London

Sun 1/2

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

1 stop7h 36m

C$ 386

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sun 8/2

8:10 a.m.-9:21 p.m.

1 stop10h 11m

London

Sun 15/2

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

1 stop7h 36m

C$ 399

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Fri 9/1

8:00 p.m.-8:46 a.m.

2 stops9h 46m

London

Tue 13/1

9:50 a.m.-10:16 p.m.

1 stop15h 26m

C$ 406

AtlantaLondon

ATL - YXU

ATLYXU

Atlanta Hartsfield-Jackson

Mon 9/2

8:25 a.m.-6:35 a.m.

2 stops22h 10m

London

Mon 16/2

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

1 stop10h 43m

C$ 423

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Thu 15/1

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

1 stop6h 45m

London

Wed 21/1

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

1 stop6h 10m

C$ 533

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Wed 18/2

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

1 stop4h 55m

London

Sun 22/2

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

1 stop6h 10m

C$ 533

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Thu 15/1

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

1 stop4h 55m

London

Thu 22/1

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

1 stop6h 10m

C$ 563

OrlandoLondon

MCO - YXU

MCOYXU

Orlando

Fri 16/1

12:10 p.m.-9:20 p.m.

1 stop9h 10m

London

Mon 19/1

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

1 stop6h 10m

C$ 566

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/12

Showing 1-10 of 44 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$ 153). 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 December 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 21% versus a flight in the morning.

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 9h 46m. The time it takes to get you to your destination can typically vary by up to 12h 24m. USA and London, Ontario are separated by a distance of 3219 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 Washington, D.C. Dulles Intl - London. You may also consider Dallas/Fort Worth - London or Louisville Intl - 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$ 153). 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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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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