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Cheap flights from the United States to London, ON from C$ 209

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 22/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
9 Jan — 16 Jan1
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 December 2025.

Sat 20/1210:20 a.m.MCO - YXU
1 stop6h 45mAir Canada
Sat 10/15:40 p.m.YXU - MCO
1 stop6h 10mAir Canada
Deal found 10/12C$ 730
Thu 11/1212:05 p.m.TPA - YXU
2 stops20h 41mAir Canada
Tue 6/19:50 a.m.YXU - TPA
1 stop5h 22mAir Canada
Deal found 9/12C$ 739
Mon 22/129:00 a.m.MCO - YXU
2 stops12h 21mUnited Airlines
Sun 28/129:25 a.m.YXU - MCO
2 stops23h 23mUnited Airlines
Deal found 7/12C$ 814
Mon 22/129:50 p.m.MCO - YXU
1 stop10h 56mAir Canada
Sun 28/125:10 a.m.YXU - MCO
1 stop6h 05mAir Canada
Deal found 7/12C$ 903
Sun 28/124:20 p.m.LGA - YXU
1 stop5h 01mAir Canada
Sun 4/15:10 a.m.YXU - LGA
1 stop4h 03mAir Canada
Deal found 7/12C$ 944
Sun 28/124:30 p.m.EWR - YXU
1 stop4h 51mAir Canada
Sun 4/15:10 a.m.YXU - EWR
1 stop5h 15mAir Canada
Deal found 7/12C$ 944
Sat 20/121:53 p.m.MCO - YXU
2 stops18h 53mUnited Airlines
Sat 10/19:50 a.m.YXU - MCO
2 stops8h 31mUnited Airlines
Deal found 10/12C$ 1,079
Tue 9/126:50 p.m.TPA - YXU
2 stops13h 56mMultiple Airlines
Thu 1/19:25 a.m.YXU - TPA
2 stops11h 57mMultiple Airlines
Deal found 9/12C$ 1,256
Sun 28/129:45 a.m.JFK - YXU
1 stop11h 36mAir Canada
Sun 4/19:50 a.m.YXU - JFK
1 stop6h 19mAir Canada
Deal found 7/12C$ 1,390
Sun 28/123:30 p.m.LGA - YXU
1 stop5h 51mUnited Airlines
Sun 4/19:50 a.m.YXU - LGA
2 stops8h 54mUnited Airlines
Deal found 7/12C$ 1,408
Mon 15/122:00 p.m.ORD - YXU
1 stop6h 21mUnited Airlines
Wed 17/129:25 a.m.YXU - ORD
1 stop4h 36mUnited Airlines
Deal found 8/12C$ 1,565
Mon 15/123:55 p.m.ORD - YXU
1 stop4h 26mAir Canada
Wed 17/129:25 a.m.YXU - ORD
2 stops10h 30mAir Canada
Deal found 8/12C$ 1,572

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 December 2025.

Round-trip from

C$ 382

One-way from

C$ 209
WestJet
  • WestJet
  • 20/1-22/1
  • 2 total stops
  • 33h 36m total
  • USA to London
Search Deals
22/1
  • 22/1
  • 2 total stops
  • 20h 34m 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 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

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 20/1

1:00 p.m.-6:34 a.m.

1 stop14h 34m

London

Thu 22/1

8:10 p.m.-12:12 p.m.

1 stop19h 02m

C$ 382

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 22/1

10:15 a.m.-6:34 a.m.

2 stops17h 19m

London

Thu 29/1

8:10 p.m.-12:12 p.m.

1 stop19h 02m

C$ 493

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Thu 22/1

9:00 a.m.-6:34 a.m.

2 stops20h 34m

London

Thu 29/1

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

1 stop18h 25m

C$ 519

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 20/1

1:00 p.m.-6:34 a.m.

1 stop14h 34m

London

Thu 22/1

8:10 p.m.-3:01 p.m.

2 stops21h 51m

C$ 541

TampaLondon

TPA - YXU

TPAYXU

Tampa

Fri 17/4

4:05 p.m.-9:18 p.m.

1 stop5h 13m

London

Mon 20/4

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

1 stop5h 45m

C$ 595

TampaLondon

TPA - YXU

TPAYXU

Tampa

Fri 17/4

4:05 p.m.-9:18 p.m.

1 stop5h 13m

London

Sun 19/4

5:40 p.m.-10:50 p.m.

1 stop5h 10m

C$ 595

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 12/5

6:45 p.m.-9:17 a.m.

2 stops11h 32m

London

Wed 13/5

3:35 p.m.-9:05 p.m.

1 stop8h 30m

C$ 600

TampaLondon

TPA - YXU

TPAYXU

Tampa

Wed 28/1

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

2 stops9h 16m

London

Wed 4/2

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

1 stop5h 17m

C$ 608

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 12/5

7:30 a.m.-7:07 p.m.

1 stop8h 37m

London

Wed 13/5

8:00 p.m.-5:14 p.m.

1 stop24h 14m

C$ 612

TampaLondon

TPA - YXU

TPAYXU

Tampa

Sat 24/1

12:05 p.m.-9:20 p.m.

2 stops9h 15m

London

Sat 31/1

9:50 a.m.-9:12 p.m.

2 stops11h 22m

C$ 620

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/12

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$ 73). Flying from USA to London, Ontario in August is currently the most expensive (average of C$ 158). 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 10 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 WestJet, Air Canada, and United Airlines fly from USA to London, Ontario in about 5h 13m. The time it takes to get you to your destination can typically vary by up to 17h 02m. 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 most popular routes from USA to London, Ontario?

    The most popular route from USA to London, Ontario is New York LaGuardia - London. You may also consider Newark - London or Chicago O'Hare 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$ 73). Flying from USA to London, Ontario in August is currently the most expensive (average of C$ 158). 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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