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 3 days, the cheapest round-trip tickets from London to the United States were found on WestJet ($270) and Air Canada ($343).

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

In the past 3 days, the cheapest round-trip tickets from London to the United States were found on WestJet ($270) and Air Canada ($343).

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 4h 02m , Boston , which takes 4h 29m, and New York , which takes 4h 51m.

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 4h 02m , Boston , which takes 4h 29m, and New York , which takes 4h 51m.

$142 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

Newark1 stop$500

Los Angeles2 stops$268

Las Vegas2 stops$329

San Francisco1 stop$239

Miami2 stops$507

Boston1 stop$549

Fort Lauderdale1 stop$486

Seattle1 stop$255

Tampa1 stop$501

San Diego1 stop$285

Honolulu2 stops$356

Newark1 stop$500

Los Angeles2 stops$268

Las Vegas2 stops$329

San Francisco1 stop$239

Miami2 stops$507

Boston1 stop$549

Fort Lauderdale1 stop$486

Seattle1 stop$255

Tampa1 stop$501

San Diego1 stop$285

Honolulu2 stops$356

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

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

$239WestJet

Wed, Jun 17 - Wed, Jun 24

6:10 am - 4:00 pm

YXU

LAX

12h 50m

2 stops

4:55 pm - 5:20 am

LAX

YXU

33h 25m

2 stops

$268WestJet

Tue, Jun 9 - Wed, Jun 10

5:10 am - 3:52 pm

YXU

RSW

10h 42m

2 stops

6:02 am - 2:58 pm

RSW

YXU

8h 56m

2 stops

$356United Airlines

Tue, Jun 9 - Wed, Jun 10

5:10 am - 9:59 pm

YXU

RSW

16h 49m

2 stops

6:02 am - 2:58 pm

RSW

YXU

8h 56m

2 stops

$357United Airlines

Mon, Jun 1 - Mon, Jun 8

5:55 pm - 5:10 pm

YXU

LAX

26h 15m

1 stop

8:27 pm - 5:20 am

LAX

YXU

29h 53m

3 stops

$434Multiple Airlines

Fri, Aug 28 - Sat, Sep 5

6:10 am - 12:25 pm

YXU

LAX

9h 15m

1 stop

1:27 pm - 5:20 am

LAX

YXU

12h 53m

2 stops

$449Multiple Airlines

Sun, Jun 7 - Wed, Jun 10

5:10 am - 11:32 am

YXU

FLL

6h 22m

1 stop

10:55 pm - 9:18 am

FLL

YXU

10h 23m

1 stop

$486Air Canada

Mon, Jun 22 - Wed, Jul 1

5:10 am - 11:29 am

YXU

FLL

6h 19m

1 stop

12:30 pm - 5:45 pm

FLL

YXU

5h 15m

1 stop

$487Air Canada

Tue, Aug 25 - Thu, Aug 27

6:10 am - 6:45 pm

YXU

SJC

15h 35m

2 stops

7:35 pm - 5:20 am

SJC

YXU

30h 45m

2 stops

$602Delta

Tue, Aug 25 - Thu, Aug 27

6:10 am - 10:13 pm

YXU

SJC

19h 03m

2 stops

8:53 pm - 4:45 pm

SJC

YXU

16h 52m

2 stops

$609Delta

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

No, with an average price for the route of $171, prices are generally cheapest when you fly direct.

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 May, when tickets cost $129 (return) on average. On the other hand, the most expensive months are March and November, when the average cost of round-trip tickets is $313 and $303 respectively.

Find deals

Low season	March
High season	January
Cheapest flight	$142

Best time to beat the crowds but there is an average 53% increase in price.

Most popular time to fly and prices are also 3% lower on average.

Flight from London to Los Angeles

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 11004 reviews

6.3Food

7.8Crew

7.1Comfort

6.8Entertainment

7.3Boarding

Airline reviews

Flight itself was not bad at all. However: my checked bag (checked in Calgary) did not make it onto this flight as I found out after I landed at EWR. I still don't have it but it appears that it is on its way to me.

10.0 ExcellentAnonymous, Apr 2026

YYZ - EWR

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

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London (YXU)

$142 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.

Can I save money by flying with a layover from London to the United States?

No, with an average price for the route of $171, prices are generally cheapest when you fly direct.

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 May, when tickets cost $129 (return) on average. On the other hand, the most expensive months are March and November, when the average cost of round-trip tickets is $313 and $303 respectively.

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

In the past 3 days, the cheapest round-trip tickets from London to the United States were found on WestJet ($270) and Air Canada ($343).

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 4h 02m, Boston, which takes 4h 29m, and New York, which takes 4h 51m.

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