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 ($290) and Air Canada ($295).

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 ($290) and Air Canada ($295).

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 40m , Boston , which takes 4h 18m, and New York , which takes 4h 38m.

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 40m , Boston , which takes 4h 18m, and New York , which takes 4h 38m.

$150 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$519

Los Angeles2 stops$291

Las Vegas2 stops$335

San Francisco1 stop$278

Miami1 stop$550

Boston1 stop$572

Fort Lauderdale2 stops$549

Seattle1 stop$254

Tampa1 stop$526

San Diego1 stop$317

Honolulu2 stops$356

Newark1 stop$519

Los Angeles2 stops$291

Las Vegas2 stops$335

San Francisco1 stop$278

Miami1 stop$550

Boston1 stop$572

Fort Lauderdale2 stops$549

Seattle1 stop$254

Tampa1 stop$526

San Diego1 stop$317

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, Jul 9 - Wed, Jul 29

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

6:00 am - 4:45 pm

SFO

YXU

7h 45m

1 stop

$278WestJet

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

$288WestJet

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

$289WestJet

Wed, Oct 21 - Sat, Oct 24

5:40 am - 10:39 am

YXU

SFO

7h 59m

1 stop

8:10 am - 9:40 pm

SFO

YXU

10h 30m

2 stops

$295Air Canada

Wed, Oct 21 - Sat, Oct 24

5:40 am - 10:39 am

YXU

SFO

7h 59m

1 stop

11:35 am - 9:40 pm

SFO

YXU

7h 05m

1 stop

$319Air Canada

Wed, Oct 28 - Sat, Oct 31

5:45 am - 9:50 pm

YXU

SNA

19h 05m

2 stops

8:40 am - 9:46 pm

SNA

YXU

10h 06m

2 stops

$359Air Canada

Thu, Sep 24 - Mon, Sep 28

5:40 am - 7:55 pm

YXU

LAX

17h 15m

2 stops

5:05 pm - 9:20 am

LAX

YXU

13h 15m

2 stops

$375Air Canada

Sat, Aug 22 - Wed, Aug 26

6:20 pm - 9:56 am

YXU

SNA

18h 36m

2 stops

6:45 am - 9:40 pm

SNA

YXU

11h 55m

2 stops

$406United Airlines

Sat, Aug 22 - Wed, Aug 26

3:30 pm - 9:56 am

YXU

SNA

21h 26m

2 stops

6:45 am - 9:40 pm

SNA

YXU

11h 55m

2 stops

$407United Airlines

Wed, Oct 28 - Sat, Oct 31

9:45 am - 6:20 pm

YXU

SNA

11h 35m

2 stops

7:00 am - 9:46 pm

SNA

YXU

11h 46m

2 stops

$494United 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 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	May
High season	January
Cheapest flight	$150

Best time to beat the crowds but there is an average 6% increase in price.

Most popular time to fly and prices are also 5% 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 11019 reviews

6.8Entertainment

6.3Food

7.1Comfort

7.3Boarding

7.8Crew

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)

$150 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 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 ($290) and Air Canada ($295).

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 40m, Boston, which takes 4h 18m, and New York, which takes 4h 38m.

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