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

Departing from London, Ontario to USA will take you 5h 49m. London, Ontario and USA are separated by a distance of 1886 km. This flight may include one or multiple stops.

In terms of precipitation, rainfall in USA ranges from 61.0 - 221.0 mm per month. June is typically the wettest month, when rainfall can reach 221.0 mm. November is typically the driest time to visit USA when rainfall is around 61.0 mm.

If weather is an important factor for your trip to USA, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 16.0 C).

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

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

What are the most popular airlines that fly from London, Ontario to USA?

Air Canada, WestJet and United Airlines are the most popular airlines when flying from London, Ontario to USA.

What is the cheapest time of day to fly from YXU to US?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London, Ontario to USA as you normally would.

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.

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.

C$ 222+ Cheap Flights from London, ON to the United States

Cheap flight deals from London to USA

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 August 2026.

Wed 30/95:40 a.m. -

1 stop5h 49m

Wed 7/1012:30 p.m. -

1 stop5h 15m

Deal found 15/8C$ 374

Sun 27/95:40 a.m. -

1 stop5h 49m

Tue 6/1012:30 p.m. -

1 stop5h 13m

Deal found 20/8C$ 398

Mon 26/105:30 a.m. -

1 stop6h 03m

Fri 30/108:00 a.m. -

1 stop6h 47m

Deal found 19/8C$ 416

Fri 11/96:10 a.m. -

1 stop8h 50m

Mon 14/96:00 a.m. -

1 stop20h 20m

Deal found 19/8C$ 430

Wed 16/96:10 a.m. -

1 stop15h 35m

Wed 23/97:35 p.m. -

1 stop6h 45m

Deal found 18/8C$ 433

Wed 28/107:40 a.m. -

1 stop10h 00m

Wed 9/122:30 p.m. -

1 stop12h 05m

Deal found 20/8C$ 434

Fri 11/96:10 a.m. -

1 stop8h 50m

Wed 16/96:05 p.m. -

1 stop8h 15m

Deal found 19/8C$ 444

Tue 27/107:40 a.m. -

1 stop10h 00m

Wed 9/122:30 p.m. -

1 stop12h 05m

Deal found 20/8C$ 445

Wed 28/107:40 a.m. -

1 stop10h 00m

Sun 6/122:30 p.m. -

1 stop12h 05m

Deal found 20/8C$ 451

Wed 9/95:40 a.m. -

1 stop9h 54m

Wed 16/911:35 a.m. -

1 stop7h 05m

Deal found 19/8C$ 466

Wed 9/96:20 p.m. -

1 stop7h 44m

Sun 13/98:10 a.m. -

2 stops10h 30m

Deal found 19/8C$ 472

Thu 10/96:10 a.m. -

1 stop8h 50m

Sun 13/96:00 a.m. -

1 stop7h 45m

Deal found 16/8C$ 477

Best flights from London to USA
Discover carefully curated flight deals from London to USA that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Sun 27/95:40 a.m. -

1 stop5h 49m

Tue 6/1012:30 p.m. -

1 stop5h 13m

Deal found 20/8C$ 398

Thu 24/95:55 p.m. -

1 stop18h 45m

Mon 28/97:35 p.m. -

1 stop6h 45m

Deal found 16/8C$ 483

Wed 30/95:40 a.m. -

2 stops12h 43m

Wed 7/107:00 a.m. -

2 stops10h 45m

Deal found 15/8C$ 496

Tue 22/96:10 a.m. -

2 stops32h 40m

Mon 28/96:05 p.m. -

1 stop8h 15m

Deal found 17/8C$ 567

Mon 30/116:40 a.m. -

1 stop12h 10m

Mon 7/124:40 p.m. -

1 stop9h 55m

Deal found 15/8C$ 633

Mon 26/105:30 a.m. -

1 stop6h 03m

Fri 30/108:00 a.m. -

1 stop6h 47m

Deal found 19/8C$ 418

Thu 8/106:10 a.m. -

1 stop8h 50m

Tue 13/106:00 a.m. -

1 stop20h 20m

Deal found 19/8C$ 507

Mon 26/105:30 a.m. -

2 stops9h 33m

Fri 30/108:52 p.m. -

2 stops17h 55m

Deal found 15/8C$ 520

Wed 30/95:40 a.m. -

1 stop5h 49m

Wed 7/107:00 a.m. -

2 stops10h 45m

Deal found 15/8C$ 487

Tue 22/96:10 a.m. -

1 stop9h 15m

Mon 28/96:05 p.m. -

1 stop8h 15m

Deal found 17/8C$ 516

Fri 2/1010:05 a.m. -

2 stops11h 52m

Fri 9/106:30 p.m. -

2 stops20h 25m

Deal found 18/8C$ 543

Sun 27/95:55 p.m. -

1 stop21h 05m

Sun 4/106:00 a.m. -

1 stop7h 45m

Deal found 17/8C$ 520

Sun 4/105:40 a.m. -

2 stops11h 14m

Sun 11/107:00 a.m. -

2 stops10h 43m

Deal found 20/8C$ 543

Thu 10/910:05 a.m. -

1 stop8h 19m

Sun 13/912:50 p.m. -

2 stops17h 30m

Deal found 17/8C$ 550

Tue 27/107:40 a.m. -

1 stop10h 00m

Mon 7/1211:00 a.m. -

2 stops15h 35m

Deal found 20/8C$ 696

Thu 10/96:10 a.m. -

1 stop8h 50m

Sun 13/91:00 p.m. -

1 stop24h 45m

Deal found 17/8C$ 535

Fri 30/103:25 p.m. -

2 stops8h 34m

Sat 14/118:52 p.m. -

2 stops17h 55m

Deal found 16/8C$ 556

Sat 5/95:40 a.m. -

2 stops16h 31m

Wed 9/97:55 a.m. -

2 stops9h 48m

Deal found 18/8C$ 594

Thu 29/107:40 a.m. -

1 stop10h 00m

Sun 6/127:15 a.m. -

2 stops19h 20m

Deal found 20/8C$ 731

Wed 16/96:10 a.m. -

2 stops12h 50m

Wed 23/96:05 p.m. -

1 stop8h 15m

Deal found 19/8C$ 551

Wed 30/96:10 a.m. -

2 stops26h 36m

Wed 7/1010:35 a.m. -

2 stops18h 45m

Deal found 16/8C$ 834

Tue 27/107:40 a.m. -

1 stop10h 00m

Sun 6/1211:00 a.m. -

2 stops15h 35m

Deal found 20/8C$ 731

Thu 17/93:30 p.m. -

1 stop8h 25m

Mon 21/910:35 p.m. -

1 stop7h 45m

Deal found 16/8C$ 614

Wed 30/96:10 a.m. -

1 stop8h 50m

Wed 7/106:05 p.m. -

1 stop8h 15m

Deal found 16/8C$ 583

Thu 8/103:30 p.m. -

2 stops18h 11m

Tue 13/1010:51 p.m. -

1 stop7h 29m

Deal found 16/8C$ 673

Tue 1/126:40 a.m. -

1 stop10h 00m

Sat 23/19:25 p.m. -

2 stops29h 10m

Deal found 20/8C$ 740

Thu 1/103:30 p.m. -

1 stop3h 30m

Thu 8/108:00 a.m. -

3 stops21h 20m

Deal found 17/8C$ 911

Tue 20/105:40 a.m. -

1 stop7h 54m

Sat 24/106:45 a.m. -

2 stops11h 55m

Deal found 20/8C$ 625

Sat 10/106:10 a.m. -

2 stops15h 10m

Sat 17/107:10 p.m. -

2 stops31h 10m

Deal found 18/8C$ 596

Thu 24/96:10 a.m. -

2 stops13h 20m

Mon 28/97:35 p.m. -

1 stop6h 45m

Deal found 16/8C$ 743

Find flight deals from London to USA

Round-trip from	C$ 374
One-way from	C$ 222
Popular in	August
Cheapest in	January
Average price	C$ 1,002

Air Canada
30/9-7/10
2 total stops
11h 04m total
London to USA

Search Deals

Air Canada
29/9
1 total stop
5h 49m total
London to USA

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (C$ 217 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 34 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Sun 27/9

5:40 a.m.-11:29 a.m.

1 stop5h 49m

Fort Lauderdale

Tue 6/10

12:30 p.m.-5:43 p.m.

1 stop5h 13m

C$ 398

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Mon 26/10

5:30 a.m.-11:33 a.m.

1 stop6h 03m

Fort Lauderdale

Fri 30/10

8:00 a.m.-2:47 p.m.

1 stop6h 47m

C$ 418

LondonSeattle

YXU London - SEA Seattle/Tacoma Intl

YXUSEA

London

Thu 24/9

5:55 p.m.-9:40 a.m.

1 stop18h 45m

Seattle/Tacoma Intl

Mon 28/9

7:35 p.m.-5:20 a.m.

1 stop6h 45m

C$ 483

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Wed 30/9

5:40 a.m.-11:29 a.m.

1 stop5h 49m

Fort Lauderdale

Wed 7/10

7:00 a.m.-5:45 p.m.

2 stops10h 45m

C$ 487

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Wed 30/9

5:40 a.m.-6:23 p.m.

2 stops12h 43m

Fort Lauderdale

Wed 7/10

7:00 a.m.-5:45 p.m.

2 stops10h 45m

C$ 496

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Thu 8/10

6:10 a.m.-12:00 p.m.

1 stop8h 50m

San Francisco

Tue 13/10

6:00 a.m.-5:20 a.m.

1 stop20h 20m

C$ 507

LondonLos Angeles

YXU London - LAX Los Angeles Los Angeles

YXULAX

London

Tue 22/9

6:10 a.m.-12:25 p.m.

1 stop9h 15m

Los Angeles Los Angeles

Mon 28/9

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

1 stop8h 15m

C$ 516

LondonFort Lauderdale

YXU London - FLL Fort Lauderdale

YXUFLL

London

Mon 26/10

5:30 a.m.-3:03 p.m.

2 stops9h 33m

Fort Lauderdale

Fri 30/10

8:52 p.m.-2:47 p.m.

2 stops17h 55m

C$ 520

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Sun 27/9

5:55 p.m.-12:00 p.m.

1 stop21h 05m

San Francisco

Sun 4/10

6:00 a.m.-4:45 p.m.

1 stop7h 45m

C$ 520

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Thu 10/9

6:10 a.m.-12:00 p.m.

1 stop8h 50m

San Francisco

Sun 13/9

1:00 p.m.-4:45 p.m.

1 stop24h 45m

C$ 535

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

YXU-FLL

YXU-SEA

YXU-LAX

YXU-SFO

YXU-DFW

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

YXU-US0

YXU-FLL

YXU-SEA

YXU-LAX

YXU-SFO

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

Currently, August is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 534). Flying from London, Ontario to USA in March is currently the most expensive (average of C$ 931). 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

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

10,104 reviews

Check prices

Reviews

1 / 20

6.0

Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

United Airlines

7.4

Good

10,104 reviews

United Airlines

7.4

Good

10,104 reviews

Check prices

Reviews

1 / 20

6.0

Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

WestJet

7.2

Good

3,434 reviews

United Airlines

7.4

Good

10,104 reviews

Check prices

Reviews

1 / 20

6.0

Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Air Canada

7.1

Good

11,509 reviews

United Airlines

7.4

Good

10,104 reviews

Check prices

Reviews

1 / 20

6.0

Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

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 49m. London, Ontario and USA are separated by a distance of 1886 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 - Los Angeles Los Angeles. You may also consider London - Newark or London - New York LaGuardia.
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, August is the cheapest month in which you can book a flight from London, Ontario to USA (average of C$ 534). Flying from London, Ontario to USA in March is currently the most expensive (average of C$ 931). 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

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Top 2 airlines flying from London to USA

Airline	Cheapest	Average	Flexibility	On-time
WestJet	CheapestC$ 220	AverageC$ 370	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Air Canada	CheapestC$ 254	AverageC$ 691	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

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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.

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

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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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Cheap flights from London, ON to the United States from C$ 222

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to USA

Cheapest flights from London to USAExplore 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 August 2026.

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 August 2026.

Best flights from London to USADiscover carefully curated flight deals from London to USA that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Discover carefully curated flight deals from London to USA that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from London to USADiscover last-minute flight deals from London to USA. Data last updated 21 August 2026 and is based on user searches.

Discover last-minute flight deals from London to USA. Data last updated 21 August 2026 and is based on user searches.

One-way flights from London to USASearch for one-way flight options from London to USA. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Search for one-way flight options from London to USA. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Find flight deals from London to USA

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One-way from

Popular in

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Use the filters below to find and compare flights from London to the United States that are best for you.

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.

Cheapflights Insights

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

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 August 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.

Related info for your journey

What airport do you fly from for flights from London to United States?

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

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

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

How can I find direct flights from London to USA?

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

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

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.

Complete your trip

Complete your trip to USA by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from London to USA by cabin class

Find flights from London to USA, based on your preferred cabin class, be it economy, premium economy, business, or first class.

London and USA flights

Browse other London and USA flight options. Last updated on 21 August 2026.

Popular flight searches

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Top 2 airlines flying from London to USA

Fly with Cheapflights

How does Cheapflights help users find flights from London to USA?

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Can Cheapflights find flights from London to USA with no change fees?

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

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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 August 2026.

Best flights from London to USA
Discover carefully curated flight deals from London to USA that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from London to USA
Discover last-minute flight deals from London to USA. Data last updated 21 August 2026 and is based on user searches.

One-way flights from London to USA
Search for one-way flight options from London to USA. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.