How does KAYAK find such low prices on flights from London to the United States?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to the United States. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to the United States?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to the United States is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from London to the United States?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from London to the United States with an airline and back with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to the United States?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

Which airlines provide the cheapest flights from London to the United States?

In the past 7 days, the cheapest round-trip tickets from London to the United States were found on WestJet ($385) and Air Canada ($416).

Which airlines provide the cheapest flights from London to the United States?

In the past 7 days, the cheapest round-trip tickets from London to the United States were found on WestJet ($385) and Air Canada ($416).

How long does a flight from London to the United States take?

The duration of a flight to the United States depends on your arrival airport. The shortest routes to the United States from London are to New York , which takes 3h 32m , Boston , which takes 4h 18m, and Dallas , which takes 5h 16m.

How long does a flight from London to the United States take?

The duration of a flight to the United States depends on your arrival airport. The shortest routes to the United States from London are to New York , which takes 3h 32m , Boston , which takes 4h 18m, and Dallas , which takes 5h 16m.

$227 CHEAP FLIGHTS from London to the United States

KAYAK searches hundreds of travel sites at once for deals on flights to the United States

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Flight Deals

One-wayRound-trip

New York1 stop$441

Los Angeles1 stop$439

Las Vegas1 stop$473

San Francisco1 stop$355

Miami1 stop$504

Boston1 stop$479

Fort Lauderdale1 stop$425

Seattle1 stop$404

Tampa2 stops$429

San Diego1 stop$434

Honolulu2 stops$608

New York1 stop$441

Los Angeles1 stop$439

Las Vegas1 stop$473

San Francisco1 stop$355

Miami1 stop$504

Boston1 stop$479

Fort Lauderdale1 stop$425

Seattle1 stop$404

Tampa2 stops$429

San Diego1 stop$434

Honolulu2 stops$608

Book Cheap London to the United States Plane Tickets

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from London to the United States

Mon, Oct 12 - Wed, Oct 21

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

6:05 pm - 5:20 am

SFO

YXU

8h 15m

1 stop

$355WestJet

Thu, Oct 8 - Tue, Oct 13

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

6:00 am - 5:20 am

SFO

YXU

20h 20m

1 stop

$385WestJet

Thu, Oct 8 - Tue, Oct 13

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

6:00 am - 5:20 am

SFO

YXU

20h 20m

1 stop

$387WestJet

Fri, Jul 17 - Sun, Jul 26

3:30 pm - 9:07 pm

YXU

SEA

8h 37m

1 stop

8:00 am - 8:32 pm

SEA

YXU

9h 32m

1 stop

$404Air Canada

Tue, Oct 20 - Wed, Oct 21

5:40 am - 10:39 am

YXU

SFO

7h 59m

1 stop

11:35 am - 9:40 pm

SFO

YXU

7h 05m

1 stop

$416Air Canada

Tue, Oct 20 - Wed, Oct 21

5:40 am - 10:39 am

YXU

SFO

7h 59m

1 stop

11:35 am - 9:40 pm

SFO

YXU

7h 05m

1 stop

$417Air Canada

Tue, Oct 20 - Wed, Oct 21

10:05 am - 8:47 pm

YXU

SFO

13h 42m

2 stops

11:35 am - 9:40 pm

SFO

YXU

7h 05m

1 stop

$419Air Canada

Wed, Jun 24 - Wed, Jul 1

10:05 am - 3:50 pm

YXU

ORD

6h 45m

1 stop

2:56 pm - 9:40 pm

ORD

YXU

5h 44m

1 stop

$596United Airlines

Mon, Nov 2 - Fri, Nov 6

3:25 pm - 10:59 am

YXU

SRQ

19h 34m

2 stops

12:23 pm - 9:46 pm

SRQ

YXU

9h 23m

2 stops

$600United Airlines

Mon, Nov 2 - Fri, Nov 6

5:45 am - 2:34 pm

YXU

SRQ

8h 49m

2 stops

12:23 pm - 9:46 pm

SRQ

YXU

9h 23m

2 stops

$601United Airlines

Booking Insights

KAYAK's insights & trends for London to the United States flights

Get data-powered insights and trends into flights from London to the United States to help you find the cheapest flights, the best time to fly and much more.

Prices

Airlines

The cheapest month for flights from London to the United States is August, when tickets cost $159 (return) on average. On the other hand, the most expensive months are April and March, when the average cost of round-trip tickets is $334 and $315 respectively.

Find deals

Low season	May
High season	January
Cheapest flight	$227

Best time to beat the crowds but there is an average 5% increase in price.

Most popular time to fly and prices are also 6% lower on average.

Flight from London to Fort Lauderdale

How does KAYAK find such low prices on flights from London to the United States?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to the United States.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to the United States?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to the United States is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from London to the United States?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from London to the United States with an airline and back with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to the United States?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

7.1

Air CanadaOverall score based on 11107 reviews

7.1Comfort

7.3Boarding

6.8Entertainment

7.8Crew

6.3Food

Airline reviews

Meal and drink service was good. Old plane with old business class seats were quite disappointing

8.0 ExcellentAnonymous, Jun 2026

YYZ - MCO

Everything you need to know for your flight from London to the United States

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London (YXU)

$227 Find Cheap Flights from London to the United States

KAYAK searches hundreds of travel sites at once for deals on flights to the United States

Cheap Flights from London to the United States

Book Cheap London to the United States Plane Tickets

Recent round-trip flight deals from London to the United States

Recent one-way flight deals from London to the United States

Recent last minute flight deals from London to the United States

KAYAK's insights & trends for London to the United States flights

Get data-powered insights and trends into flights from London to the United States to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from London to the United States?

The cheapest month for flights from London to the United States is August, when tickets cost $159 (return) on average. On the other hand, the most expensive months are April and March, when the average cost of round-trip tickets is $334 and $315 respectively.

Which airlines provide the cheapest flights from London to the United States?

In the past 7 days, the cheapest round-trip tickets from London to the United States were found on WestJet ($385) and Air Canada ($416).

How long does a flight from London to the United States take?

The duration of a flight to the United States depends on your arrival airport. The shortest routes to the United States from London are to New York, which takes 3h 32m, Boston, which takes 4h 18m, and Dallas, which takes 5h 16m.

Good to know

FAQs - booking United States flights

How does KAYAK find such low prices on flights from London to the United States?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to the United States.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to the United States?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to the United States is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from London to the United States?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from London to the United States with an airline and back with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to the United States?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from London to the United States

Everything you need to know for your flight from London to the United States

Information on your arrival and departure airports

Cabin class types available on flights to the United States

Complete your trip to the United States with a hotel stay or car rental

Flights to other popular destinations

Flights from other airports in London to the United States

Flights from London to popular cities in the United States

Find deals for your return flight