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Cheap flights from the United States to London, ON from C$ 323

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 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
5 May — 12 May1
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 5 April 2026.

Wed 13/59:10 p.m.
TPA
-
YXU
1 stop14h 33m
Air Canada
Sun 17/55:10 a.m.
YXU
-
TPA
1 stop6h 00m
Air Canada
Deal found 2/4C$ 672
Sat 16/54:45 p.m.
LGA
-
YXU
2 stops21h 05m
Multiple Airlines
Sat 23/56:10 p.m.
YXU
-
LGA
1 stop4h 26m
Multiple Airlines
Deal found 1/4C$ 704
Tue 19/52:23 p.m.
DEN
-
YXU
2 stops12h 57m
Multiple Airlines
Fri 22/55:55 p.m.
YXU
-
DEN
1 stop19h 25m
Multiple Airlines
Deal found 3/4C$ 707
Sat 16/54:45 p.m.
LGA
-
YXU
1 stop4h 53m
Air Canada
Sat 23/512:20 p.m.
YXU
-
LGA
1 stop6h 05m
Air Canada
Deal found 1/4C$ 715
Sat 16/56:59 a.m.
JFK
-
YXU
1 stop4h 44m
Air Canada
Sat 23/56:10 p.m.
YXU
-
JFK
1 stop4h 38m
Air Canada
Deal found 1/4C$ 719
Sat 16/56:35 a.m.
EWR
-
YXU
1 stop5h 08m
Air Canada
Sat 23/55:10 a.m.
YXU
-
EWR
1 stop5h 10m
Air Canada
Deal found 1/4C$ 721
Fri 8/59:55 a.m.
LGA
-
YXU
2 stops19h 25m
Multiple Airlines
Sun 17/55:10 a.m.
YXU
-
LGA
1 stop4h 19m
Multiple Airlines
Deal found 2/4C$ 721
Fri 8/52:25 p.m.
EWR
-
YXU
1 stop14h 55m
Multiple Airlines
Sun 17/56:10 p.m.
YXU
-
EWR
1 stop4h 25m
Multiple Airlines
Deal found 2/4C$ 724
Sat 16/59:10 p.m.
TPA
-
YXU
1 stop11h 43m
Air Canada
Sat 23/55:10 a.m.
YXU
-
TPA
1 stop6h 00m
Air Canada
Deal found 1/4C$ 725
Fri 8/56:59 a.m.
JFK
-
YXU
1 stop4h 44m
Air Canada
Sun 17/55:10 a.m.
YXU
-
JFK
1 stop4h 50m
Air Canada
Deal found 2/4C$ 726
Tue 19/52:25 p.m.
ATL
-
YXU
1 stop14h 55m
WestJet
Tue 26/52:40 p.m.
YXU
-
ATL
2 stops16h 15m
WestJet
Deal found 3/4C$ 729
Sun 17/512:15 p.m.
DEN
-
YXU
1 stop15h 05m
WestJet
Sun 24/55:55 p.m.
YXU
-
DEN
1 stop19h 25m
WestJet
Deal found 2/4C$ 731

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 5 April 2026.

Round-trip from

C$ 672

One-way from

C$ 323
Air Canada
  • Air Canada
  • 13/5-17/5
  • 2 total stops
  • 20h 33m total
  • USA to London
Search Deals
Air Canada
  • Air Canada
  • 19/5
  • 1 total stop
  • 11h 43m 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 5 April 2026.
Use the filters below to find and compare flights from the United States to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TampaLondon

TPA - YXU

TPAYXU

Tampa

Wed 13/5

9:10 p.m.-11:43 a.m.

1 stop14h 33m

London

Sun 17/5

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

1 stop6h 00m

C$ 672

TampaLondon

TPA - YXU

TPAYXU

Tampa

Wed 27/5

9:10 p.m.-8:53 a.m.

1 stop11h 43m

London

Fri 29/5

12:20 p.m.-8:08 p.m.

2 stops7h 48m

C$ 685

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Tue 19/5

2:23 p.m.-5:20 a.m.

2 stops12h 57m

London

Fri 22/5

5:55 p.m.-11:20 a.m.

1 stop19h 25m

C$ 707

New YorkLondon

LGA - YXU

LGAYXU

New York LaGuardia

Sat 16/5

4:45 p.m.-9:38 p.m.

1 stop4h 53m

London

Sat 23/5

12:20 p.m.-6:25 p.m.

1 stop6h 05m

C$ 715

New YorkLondon

JFK - YXU

JFKYXU

New York John F Kennedy Intl

Sat 16/5

6:59 a.m.-11:43 a.m.

1 stop4h 44m

London

Sat 23/5

6:10 p.m.-10:48 p.m.

1 stop4h 38m

C$ 719

TampaLondon

TPA - YXU

TPAYXU

Tampa

Sat 16/5

9:10 p.m.-8:53 a.m.

1 stop11h 43m

London

Sat 23/5

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

1 stop6h 00m

C$ 725

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Sun 17/5

12:15 p.m.-5:20 a.m.

1 stop15h 05m

London

Sun 24/5

5:55 p.m.-11:20 a.m.

1 stop19h 25m

C$ 731

TampaLondon

TPA - YXU

TPAYXU

Tampa

Wed 8/7

12:00 p.m.-9:40 p.m.

2 stops9h 40m

London

Sun 12/7

9:30 a.m.-8:04 p.m.

2 stops10h 34m

C$ 750

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Sun 17/5

7:12 a.m.-5:20 a.m.

2 stops20h 08m

London

Sun 24/5

5:55 p.m.-11:20 a.m.

1 stop19h 25m

C$ 760

NewarkLondon

EWR - YXU

EWRYXU

Newark

Sat 16/5

6:40 p.m.-1:50 p.m.

3 stops19h 10m

London

Sat 23/5

6:10 p.m.-10:35 p.m.

1 stop4h 25m

C$ 775

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/4

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from USA to London, Ontario (average of C$ 112). Flying from USA to London, Ontario in March is currently the most expensive (average of C$ 198). 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.

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 and WestJet fly from USA to London, Ontario in about 14h 33m. The time it takes to get you to your destination can typically vary by up to 32m. 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 Newark - London. You may also consider New York LaGuardia - London or Denver 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, February is the cheapest month in which you can book a flight from USA to London, Ontario (average of C$ 112). Flying from USA to London, Ontario in March is currently the most expensive (average of C$ 198). 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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