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Cheap flights from London, ON to the United States from C$ 177

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LAX
20 Feb — 27 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 21 January 2026.

Sat 2/58:00 p.m.
YXU
-
SEA
1 stop20h 08m
WestJet
Sat 9/57:05 a.m.
SEA
-
YXU
1 stop9h 02m
WestJet
Deal found 20/1C$ 344
Mon 26/15:40 p.m.
YXU
-
MCO
1 stop6h 10m
Air Canada
Wed 28/110:20 a.m.
MCO
-
YXU
1 stop6h 45m
Air Canada
Deal found 20/1C$ 467
Mon 26/15:40 p.m.
YXU
-
MCO
1 stop6h 10m
Air Canada
Tue 27/18:30 a.m.
MCO
-
YXU
2 stops8h 35m
Air Canada
Deal found 20/1C$ 471
Mon 13/45:10 a.m.
YXU
-
FLL
1 stop6h 01m
Air Canada
Fri 17/411:15 a.m.
FLL
-
YXU
1 stop5h 48m
Air Canada
Deal found 19/1C$ 477
Sun 25/15:40 p.m.
YXU
-
MCO
1 stop6h 10m
Air Canada
Thu 29/110:20 a.m.
MCO
-
YXU
1 stop6h 45m
Air Canada
Deal found 20/1C$ 478
Sun 1/35:40 p.m.
YXU
-
TPA
1 stop5h 02m
Air Canada
Wed 4/312:05 p.m.
TPA
-
YXU
2 stops9h 16m
Air Canada
Deal found 19/1C$ 481
Sun 25/15:10 a.m.
YXU
-
MCO
2 stops11h 57m
Air Canada
Wed 28/110:20 a.m.
MCO
-
YXU
1 stop6h 45m
Air Canada
Deal found 20/1C$ 481
Thu 22/15:10 a.m.
YXU
-
MCO
2 stops11h 57m
Air Canada
Wed 28/110:20 a.m.
MCO
-
YXU
1 stop6h 45m
Air Canada
Deal found 20/1C$ 492
Tue 3/25:10 a.m.
YXU
-
FLL
1 stop7h 33m
Air Canada
Fri 6/210:15 p.m.
FLL
-
YXU
1 stop10h 31m
Air Canada
Deal found 20/1C$ 495
Sun 22/25:40 p.m.
YXU
-
FLL
1 stop6h 32m
Air Canada
Tue 24/210:15 p.m.
FLL
-
YXU
1 stop10h 31m
Air Canada
Deal found 21/1C$ 498
Tue 27/15:40 p.m.
YXU
-
TPA
1 stop5h 22m
Air Canada
Wed 18/212:05 p.m.
TPA
-
YXU
2 stops9h 16m
Air Canada
Deal found 20/1C$ 505
Thu 19/29:25 a.m.
YXU
-
TPA
2 stops11h 57m
Air Canada
Tue 24/26:20 a.m.
TPA
-
YXU
1 stop10h 45m
Air Canada
Deal found 20/1C$ 523

Find flight deals from London to USA

Keep the following information in mind while searching for London to USA flight deals. Data was last updated 21 January 2026.

Round-trip from

C$ 344

One-way from

C$ 177

Popular in

December

Cheapest in

April

Average price

C$ 599
WestJet
  • WestJet
  • 2/5-9/5
  • 2 total stops
  • 29h 10m total
  • London to USA
Search Deals
WestJet
  • WestJet
  • 6/3
  • 1 total stop
  • 9h 49m total
  • London to USA
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 21 January 2026.
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

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 2/5

8:00 p.m.-1:08 p.m.

1 stop20h 08m

Seattle/Tacoma Intl

Sat 9/5

7:05 a.m.-7:07 p.m.

1 stop9h 02m

C$ 344

LondonFort Lauderdale

YXU - FLL

YXUFLL

London

Mon 13/4

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

1 stop6h 01m

Fort Lauderdale

Fri 17/4

11:15 a.m.-5:03 p.m.

1 stop5h 48m

C$ 477

LondonTampa

YXU - TPA

YXUTPA

London

Sun 1/3

5:40 p.m.-10:42 p.m.

1 stop5h 02m

Tampa

Wed 4/3

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

2 stops9h 16m

C$ 481

LondonFort Lauderdale

YXU - FLL

YXUFLL

London

Sun 22/2

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

1 stop6h 32m

Fort Lauderdale

Tue 24/2

10:15 p.m.-8:46 a.m.

1 stop10h 31m

C$ 495

LondonFort Lauderdale

YXU - FLL

YXUFLL

London

Tue 3/2

5:10 a.m.-12:43 p.m.

1 stop7h 33m

Fort Lauderdale

Fri 6/2

10:15 p.m.-8:46 a.m.

1 stop10h 31m

C$ 495

LondonOrlando

YXU - MCO

YXUMCO

London

Fri 20/3

9:25 a.m.-7:45 p.m.

2 stops10h 20m

Orlando

Thu 26/3

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

1 stop4h 55m

C$ 514

LondonTampa

YXU - TPA

YXUTPA

London

Thu 19/2

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

2 stops11h 57m

Tampa

Tue 24/2

6:20 a.m.-5:05 p.m.

1 stop10h 45m

C$ 523

LondonOrlando

YXU - MCO

YXUMCO

London

Mon 6/4

5:10 a.m.-11:06 a.m.

1 stop5h 56m

Orlando

Fri 10/4

8:30 a.m.-9:18 p.m.

2 stops12h 48m

C$ 525

LondonOrlando

YXU - MCO

YXUMCO

London

Sun 22/2

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

1 stop6h 10m

Orlando

Wed 25/2

8:00 a.m.-9:21 p.m.

1 stop13h 21m

C$ 527

LondonPhoenix

YXU - PHX

YXUPHX

London

Mon 9/3

5:10 a.m.-4:25 p.m.

2 stops14h 15m

Phoenix Sky Harbor Intl

Thu 12/3

5:30 p.m.-8:46 a.m.

2 stops12h 16m

C$ 534

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/1

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$ 90). Flying from London, Ontario to USA in December is currently the most expensive (average of C$ 200). 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.

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 21 January 2026.
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
9,191 reviews
Check prices

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,191 reviews
United Airlines
7.4
Good
9,191 reviews
Check prices

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
WestJet
7.2
Good
3,247 reviews
United Airlines
7.4
Good
9,191 reviews
Check prices

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Air Canada
7.1
Good
10,646 reviews
United Airlines
7.4
Good
9,191 reviews
Check prices

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Flair Airlines
6.0
Okay
262 reviews
United Airlines
7.4
Good
9,191 reviews
Check prices

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 6h 01m. London, Ontario and USA are separated by a distance of 1886 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 Flair Airlines, with whom users have recently found tickets for as low as C$ 102. However, be on the lookout for offers from Air Canada and WestJet, 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 - Seattle/Tacoma Intl or London - Fort Lauderdale.

  • 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$ 90). Flying from London, Ontario to USA in December is currently the most expensive (average of C$ 200). 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 21 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapestC$ 161AverageC$ 236FlexibilityNo cancel feeOn-timeN/A
Search Flair Airlines flights
United AirlinesCheapestC$ 179AverageC$ 495FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 220AverageC$ 395FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 255AverageC$ 665FlexibilityNo 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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