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Cheap flights from London, ON to the United States from C$ 243

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 25/11. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
13 Nov — 20 Nov1
1 adult
1 adult, Economy

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 14 October 2025.

Thu 27/115:15 a.m.YXU - LAX
1 stop8h 17mAir Canada
Thu 4/126:10 p.m.LAX - YXU
2 stops11h 36mAir Canada
Deal found 13/10C$ 424
Thu 27/119:25 a.m.YXU - LAX
1 stop8h 52mMultiple Airlines
Thu 4/1212:15 p.m.LAX - YXU
1 stop27h 57mMultiple Airlines
Deal found 13/10C$ 445
Fri 5/129:25 a.m.YXU - TPA
2 stops11h 57mAir Canada
Mon 15/124:15 p.m.TPA - YXU
1 stop5h 06mAir Canada
Deal found 13/10C$ 471
Sun 9/115:15 a.m.YXU - TPA
1 stop5h 47mAir Canada
Sun 16/1110:10 p.m.TPA - YXU
1 stop10h 36mAir Canada
Deal found 12/10C$ 483
Tue 2/125:15 a.m.YXU - MCO
2 stops11h 52mAir Canada
Tue 9/128:30 a.m.MCO - YXU
2 stops12h 51mAir Canada
Deal found 14/10C$ 496
Mon 1/125:15 a.m.YXU - FLL
2 stops8h 10mAir Canada
Mon 8/1211:40 p.m.FLL - YXU
2 stops9h 06mAir Canada
Deal found 12/10C$ 497
Thu 27/118:10 p.m.YXU - MCO
2 stops23h 38mMultiple Airlines
Thu 4/125:30 p.m.MCO - YXU
1 stop25h 42mMultiple Airlines
Deal found 12/10C$ 517
Mon 24/115:40 p.m.YXU - MCO
1 stop5h 50mAir Canada
Sun 30/1110:20 a.m.MCO - YXU
1 stop6h 45mAir Canada
Deal found 12/10C$ 527
Mon 10/115:40 p.m.YXU - LAX
2 stops10h 19mUnited Airlines
Mon 17/115:00 a.m.LAX - YXU
2 stops13h 21mUnited Airlines
Deal found 13/10C$ 558
Fri 5/129:25 a.m.YXU - FLL
2 stops10h 45mAir Canada
Sat 13/1211:20 a.m.FLL - YXU
2 stops10h 01mAir Canada
Deal found 13/10C$ 570
Sun 9/115:40 p.m.YXU - TPA
2 stops17h 40mUnited Airlines
Sun 16/117:00 a.m.TPA - YXU
2 stops25h 46mUnited Airlines
Deal found 14/10C$ 575
Sat 18/106:15 a.m.YXU - FLL
2 stops14h 12mUnited Airlines
Mon 20/106:45 p.m.FLL - YXU
2 stops20h 17mUnited Airlines
Deal found 14/10C$ 589

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 14 October 2025.

Round-trip from

C$ 378

One-way from

C$ 243

Popular in

December

Cheapest in

January

Average price

C$ 612
WestJet
  • WestJet
  • 16/1-25/1
  • 3 total stops
  • 24h 32m total
  • London to USA
Search Deals
25/11
  • 25/11
  • 2 total stops
  • 16h 55m 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$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 14 October 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.-7:50 p.m.

2 stops15h 20m

Los Angeles

Sun 25/1

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

1 stop9h 12m

C$ 378

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$ 416

LondonLos Angeles

YXU - LAX

YXULAX

London

Thu 27/11

5:15 a.m.-10:32 a.m.

1 stop8h 17m

Los Angeles

Thu 4/12

6:10 p.m.-8:46 a.m.

2 stops11h 36m

C$ 424

LondonLos Angeles

YXU - LAX

YXULAX

London

Thu 27/11

9:25 a.m.-3:17 p.m.

1 stop8h 52m

Los Angeles

Thu 4/12

12:15 p.m.-7:12 p.m.

1 stop27h 57m

C$ 445

LondonTampa

YXU - TPA

YXUTPA

London

Fri 5/12

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

2 stops11h 57m

Tampa

Mon 15/12

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

1 stop5h 06m

C$ 471

LondonTampa

YXU - TPA

YXUTPA

London

Sun 9/11

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

2 stops11h 47m

Tampa

Sun 16/11

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

1 stop10h 36m

C$ 483

LondonOrlando

YXU - MCO

YXUMCO

London

Mon 24/11

8:10 p.m.-4:38 p.m.

1 stop20h 28m

Orlando

Sun 30/11

8:50 a.m.-7:12 p.m.

2 stops34h 22m

C$ 497

LondonFort Lauderdale

YXU - FLL

YXUFLL

London

Mon 1/12

5:15 a.m.-1:25 p.m.

2 stops8h 10m

Fort Lauderdale

Mon 8/12

11:40 p.m.-8:46 a.m.

2 stops9h 06m

C$ 497

LondonOrlando

YXU - MCO

YXUMCO

London

Wed 31/12

5:10 a.m.-5:07 p.m.

2 stops11h 57m

Orlando

Thu 8/1

8:30 a.m.-5:05 p.m.

2 stops8h 35m

C$ 497

LondonOrlando

YXU - MCO

YXUMCO

London

Tue 2/12

5:15 a.m.-5:07 p.m.

2 stops11h 52m

Orlando

Tue 9/12

8:30 a.m.-5:05 p.m.

2 stops8h 35m

C$ 497

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/10

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$ 173). 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 14 October 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 14 October 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
8,976 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,976 reviews
United Airlines
7.4
Good
8,976 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
WestJet
7.2
Good
3,125 reviews
United Airlines
7.4
Good
8,976 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Air Canada
7.1
Good
10,297 reviews
United Airlines
7.4
Good
8,976 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Flair Airlines
6.0
Okay
248 reviews
United Airlines
7.4
Good
8,976 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

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 8h 17m. London, Ontario and USA are separated by a distance of 3364 km. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from London, Ontario to USA one-way?

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as C$ 244. However, be on the lookout for offers from WestJet and United Airlines, as they are both options that can get you from London, Ontario to USA for a low price.

  • 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$ 173). 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 14 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapestC$ 163AverageC$ 259FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
United AirlinesCheapestC$ 195AverageC$ 587FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 246AverageC$ 414FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 310AverageC$ 683FlexibilityNo 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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