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Cheap flights from London, ON to the United States from C$ 271

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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
4 Dec — 11 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from London to USA

Enter your travel dates to find the best prices.

Cheapest flights from London to USA
Explore the most affordable flight options available from London to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 November 2025.

Mon 1/125:40 p.m.YXU - MCO
1 stop5h 50mAir Canada
Tue 9/128:30 a.m.MCO - YXU
2 stops12h 51mAir Canada
Deal found 3/11C$ 496
Tue 30/125:40 p.m.YXU - MCO
1 stop5h 50mAir Canada
Wed 7/110:20 a.m.MCO - YXU
1 stop6h 45mAir Canada
Deal found 1/11C$ 498
Mon 1/125:40 p.m.YXU - FLL
1 stop6h 32mAir Canada
Sat 27/128:30 p.m.FLL - YXU
1 stop12h 16mAir Canada
Deal found 4/11C$ 517
Mon 17/115:40 p.m.YXU - MCO
1 stop5h 50mAir Canada
Mon 24/118:30 a.m.MCO - YXU
2 stops12h 51mAir Canada
Deal found 3/11C$ 517
Mon 1/125:10 a.m.YXU - RSW
1 stop6h 20mAir Canada
Tue 9/128:40 p.m.RSW - YXU
1 stop12h 06mAir Canada
Deal found 3/11C$ 543
Tue 2/125:10 a.m.YXU - MCO
1 stop6h 05mAir Canada
Tue 9/128:30 a.m.MCO - YXU
2 stops8h 35mAir Canada
Deal found 4/11C$ 547
Fri 5/129:25 a.m.YXU - FLL
2 stops10h 45mAir Canada
Sat 13/128:30 p.m.FLL - YXU
1 stop12h 16mAir Canada
Deal found 3/11C$ 567
Mon 1/129:25 a.m.YXU - RSW
2 stops12h 11mUnited Airlines
Tue 9/129:20 a.m.RSW - YXU
2 stops12h 01mUnited Airlines
Deal found 3/11C$ 576
Fri 28/115:40 p.m.YXU - MCO
1 stop5h 50mAir Canada
Fri 5/129:50 p.m.MCO - YXU
1 stop10h 56mAir Canada
Deal found 4/11C$ 581
Fri 5/125:40 p.m.YXU - LAS
1 stop7h 51mAir Canada
Mon 8/1211:30 p.m.LAS - YXU
1 stop6h 16mAir Canada
Deal found 3/11C$ 583
Fri 12/129:25 a.m.YXU - MCO
2 stops10h 10mAir Canada
Sat 27/129:50 p.m.MCO - YXU
1 stop10h 56mAir Canada
Deal found 3/11C$ 583
Tue 2/125:40 p.m.YXU - MCO
2 stops7h 04mMultiple Airlines
Tue 9/128:30 a.m.MCO - YXU
2 stops12h 51mMultiple Airlines
Deal found 4/11C$ 587

Cheap flight deals from London to USA

Keep the following information in mind while searching for London to USA flight deals. Data was last updated 4 November 2025.

Round-trip from

C$ 399

One-way from

C$ 271

Popular in

December

Cheapest in

January

Average price

C$ 616
WestJet
  • WestJet
  • 16/1-25/1
  • 2 total stops
  • 26h 45m total
  • London to USA
Search Deals
Air Canada
  • Air Canada
  • 2/12
  • 1 total stop
  • 6h 20m total
  • London to USA
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to USA 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 4 November 2025.
Use the filters below to find and compare flights from London to the United States that are best for you.

Fly from

London

Fly to

USA

Route

Depart

Return

Price

LondonLos Angeles

YXU - LAX

YXULAX

London

Fri 16/1

7:30 a.m.-10:03 p.m.

1 stop17h 33m

Los Angeles

Sun 25/1

7:00 a.m.-7:12 p.m.

1 stop9h 12m

C$ 399

LondonTampa

YXU - TPA

YXUTPA

London

Sun 22/2

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

1 stop5h 52m

Tampa

Thu 26/2

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

1 stop5h 06m

C$ 496

LondonTampa

YXU - TPA

YXUTPA

London

Sat 7/2

9:25 a.m.-9:12 p.m.

2 stops11h 47m

Tampa

Sat 21/2

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

2 stops9h 16m

C$ 496

LondonOrlando

YXU - MCO

YXUMCO

London

Mon 1/12

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

1 stop5h 50m

Orlando

Tue 9/12

8:30 a.m.-9:21 p.m.

2 stops12h 51m

C$ 496

LondonLos Angeles

YXU - LAX

YXULAX

London

Sun 22/2

8:10 p.m.-11:00 a.m.

2 stops17h 50m

Los Angeles

Thu 26/2

11:50 a.m.-6:35 a.m.

2 stops15h 45m

C$ 498

LondonOrlando

YXU - MCO

YXUMCO

London

Tue 30/12

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

1 stop5h 50m

Orlando

Wed 7/1

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

1 stop6h 45m

C$ 498

LondonTampa

YXU - TPA

YXUTPA

London

Sun 8/2

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

2 stops11h 57m

Tampa

Fri 13/2

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

2 stops9h 16m

C$ 501

LondonFort Lauderdale

YXU - FLL

YXUFLL

London

Mon 1/12

5:40 p.m.-12:12 a.m.

1 stop6h 32m

Fort Lauderdale

Sat 27/12

8:30 p.m.-8:46 a.m.

1 stop12h 16m

C$ 517

LondonOrlando

YXU - MCO

YXUMCO

London

Mon 17/11

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

1 stop5h 50m

Orlando

Mon 24/11

8:30 a.m.-9:21 p.m.

2 stops12h 51m

C$ 517

LondonOrlando

YXU - MCO

YXUMCO

London

Thu 22/1

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

1 stop5h 50m

Orlando

Thu 29/1

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

1 stop4h 55m

C$ 517

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 60 results
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Best time to book a flight from London to USA

Have a flexible travel schedule? Discover the best time to fly to USA from London 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 London to the United States

What is the cheapest month to book a flight from London, Ontario to USA?

Currently, April is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 91). Flying from London, Ontario to USA in February is currently the most expensive (average of C$ 174). 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 YXU to US?

Find hourly flight availability from London to USA. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 November 2025.

It’s typically best to fly out from London, Ontario to USA in the evening. Doing so could potentially save you 27% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from London, Ontario to USA?

Use this chart to determine the cheapest time to fly round-trip from London to USA. Price data was last updated on 10 November 2024.

Travelers seeking maximum savings on their London, Ontario to USA flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing USA

Get insights into the airlines that provide service to USA. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to USA. Reviews last updated 4 November 2025.
Check out reviews from past customers who have flown with United Airlines,WestJet, andAir Canada from London to the United States to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,002 reviews
Check prices

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,002 reviews
United Airlines
7.4
Good
9,002 reviews
Check prices

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
WestJet
7.2
Good
3,154 reviews
United Airlines
7.4
Good
9,002 reviews
Check prices

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Air Canada
7.1
Good
10,403 reviews
United Airlines
7.4
Good
9,002 reviews
Check prices

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Flair Airlines
6.0
Okay
253 reviews
United Airlines
7.4
Good
9,002 reviews
Check prices

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from London to USA. 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 from for flights from London to United States?

    Located just 8.6 km from the city centre, London (YXU) is the airport most travellers will use when flying to United States from London.

  • How long is the flight from London, Ontario to USA?

    Departing from London, Ontario to USA will take you 5h 52m. London, Ontario and USA are separated by a distance of 1677 km. This flight may include one or multiple stops.

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

    The most popular route from London, Ontario to USA is London - Orlando. You may also consider London - New York LaGuardia or London - Newark.

  • Can I find deals for flights from London to USA that include hotel bookings?

    Yes. In addition to deals on London to USA flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to USA?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to USA.

  • Can I find deals for business class flights from London to USA?

    Yes. Cheapflights offers flight deals from London to USA 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 London, Ontario to USA?

    Currently, April is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 91). Flying from London, Ontario to USA in February is currently the most expensive (average of C$ 174). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to USA

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from London to USA

Discover the top 4 airlines that operate flights from London to USA. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 4 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapestC$ 163AverageC$ 253FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
United AirlinesCheapestC$ 181AverageC$ 568FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 246AverageC$ 407FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 310AverageC$ 698FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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 London to USA?

Cheapflights helps you search for flights from London to USA via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to USA?

Cheapflights simply makes it quick and affordable to book flights from London to USA 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 London to USA with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to USA flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to USA become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to USA from London today and book when prices fit your budget.

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