Cheap flights from London to the United States from $398

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to the United States departing on 3/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from London to the United States

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
9:20 pm - 8:05 pm
LGW
-
JFK
27h 45m2 stops
TAP AIR PORTUGAL Logo
10:00 pm - 3:45 pm
JFK
-
LGW
12h 45m1 stop
$495TAP AIR PORTUGAL
mar., ene. 13 - vie., ene. 30
Air Canada Logo
9:00 am - 8:58 pm
LHR
-
JFK
16h 58m2 stops
Air Canada Logo
10:05 am - 7:10 am
JFK
-
LHR
16h 05m1 stop
$495Air Canada
jue., ene. 22 - lun., ene. 26
Air Canada Logo
9:00 am - 8:58 pm
LHR
-
JFK
16h 58m2 stops
Air Canada Logo
10:05 am - 8:05 am
JFK
-
LHR
17h 00m2 stops
$496Air Canada
jue., ene. 22 - lun., ene. 26
SWISS Logo
6:00 am - 1:05 pm
LHR
-
JFK
12h 05m1 stop
SWISS Logo
9:00 pm - 1:00 pm
JFK
-
LHR
11h 00m1 stop
$497SWISS
vie., ene. 9 - jue., ene. 22
Norse Atlantic UK Logo
1:00 pm - 3:55 pm
LGW
-
JFK
7h 55mnonstop
Norse Atlantic UK Logo
6:05 pm - 6:00 am
JFK
-
LGW
6h 55mnonstop
$498Norse Atlantic UK
dom., feb. 1 - mié., feb. 11
United Airlines Logo
1:30 pm - 11:43 pm
LHR
-
LGA
15h 13m2 stops
United Airlines Logo
7:29 pm - 10:50 am
LGA
-
LHR
10h 21m1 stop
$498United Airlines
sáb., ene. 17 - mar., ene. 20
United Airlines Logo
6:50 am - 1:20 pm
LHR
-
JFK
11h 30m1 stop
United Airlines Logo
10:05 am - 7:10 am
JFK
-
LHR
16h 05m1 stop
$498United Airlines
dom., mar. 1 - vie., mar. 6
Norse Atlantic UK Logo
1:05 pm - 3:55 pm
LGW
-
JFK
7h 50mnonstop
Norse Atlantic UK Logo
6:20 pm - 6:20 am
JFK
-
LGW
7h 00mnonstop
$500Norse Atlantic UK
dom., abr. 26 - sáb., may. 2
Finnair Logo
6:35 am - 3:29 pm
LHR
-
JFK
13h 54m1 stop
Finnair Logo
8:05 pm - 8:15 am
JFK
-
LHR
7h 10mnonstop
$503Finnair
lun., abr. 27 - lun., may. 4
British Airways Logo
6:15 am - 7:21 pm
LHR
-
LGA
18h 06m2 stops
British Airways Logo
3:40 pm - 6:30 am
LGA
-
LHR
9h 50m1 stop
$507British Airways
sáb., ene. 17 - dom., ene. 25

TAP AIR PORTUGAL flights from London to United States

Our best TAP AIR PORTUGAL deals on London to United States flight tickets
TAP AIR PORTUGAL
Jan 13
LGW9:20 pmLondon Gatwick
27h 45m
2 stops
JFK8:05 pmNew York John F Kennedy Intl
Jan 30
JFK10:00 pmNew York John F Kennedy Intl
12h 45m
1 stop
LGW3:45 pmLondon Gatwick
TAP AIR PORTUGAL
Jan 25
LGW9:25 pmLondon Gatwick
27h 40m
2 stops
JFK8:05 pmNew York John F Kennedy Intl
Feb 1
JFK10:00 pmNew York John F Kennedy Intl
12h 45m
1 stop
LGW3:45 pmLondon Gatwick
TAP AIR PORTUGAL
Dec 16
LGW10:40 amLondon Gatwick
16h 30m
1 stop
EWR10:10 pmNewark
Jan 10
EWR1:35 amNewark
14h 05m
1 stop
LGW8:40 pmLondon Gatwick

Air Canada flights from London to United States

Our best Air Canada deals on London to United States flight tickets
Air Canada
Jan 22
LHR9:00 amLondon Heathrow
16h 58m
2 stops
JFK8:58 pmNew York John F Kennedy Intl
Jan 26
JFK10:05 amNew York John F Kennedy Intl
16h 05m
1 stop
LHR7:10 amLondon Heathrow
Air Canada
Jan 22
LHR9:00 amLondon Heathrow
16h 58m
2 stops
JFK8:58 pmNew York John F Kennedy Intl
Jan 26
JFK10:05 amNew York John F Kennedy Intl
17h 00m
2 stops
LHR8:05 amLondon Heathrow
Air Canada
Jan 26
LHR9:00 amLondon Heathrow
18h 39m
2 stops
JFK10:39 pmNew York John F Kennedy Intl
Feb 1
JFK10:05 amNew York John F Kennedy Intl
18h 15m
2 stops
LHR9:20 amLondon Heathrow

momondo Fare Finder

 
Customize your flight search to find flights from London to United States 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, momondo users made 832,500 searches. Data last updated diciembre 4, 2025.
Use the filters below to find and compare flights from London to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonNew York

LGW - JFK

LGWJFK

London Gatwick

mar. 1/13

9:20 pm-8:05 pm

2 stops27h 45m

New York John F Kennedy Intl

vie. 1/30

10:00 pm-3:45 pm

1 stop12h 45m

$495

LondonNew York

LHR - JFK

LHRJFK

London Heathrow

jue. 1/22

9:00 am-8:58 pm

2 stops16h 58m

New York John F Kennedy Intl

lun. 1/26

10:05 am-7:10 am

1 stop16h 05m

$495

LondonNew York

LHR - JFK

LHRJFK

London Heathrow

jue. 1/22

9:00 am-8:58 pm

2 stops16h 58m

New York John F Kennedy Intl

lun. 1/26

10:05 am-8:05 am

2 stops17h 00m

$496

LondonNew York

LHR - JFK

LHRJFK

London Heathrow

vie. 1/9

6:00 am-1:05 pm

1 stop12h 05m

New York John F Kennedy Intl

jue. 1/22

9:00 pm-1:00 pm

1 stop11h 00m

$497

LondonNew York

LGW - JFK

LGWJFK

London Gatwick

dom. 2/1

1:00 pm-3:55 pm

Nonstop7h 55m

New York John F Kennedy Intl

mié. 2/11

6:05 pm-6:00 am

Nonstop6h 55m

$498

LondonNew York

LHR - LGA

LHRLGA

London Heathrow

sáb. 1/17

1:30 pm-11:43 pm

2 stops15h 13m

New York LaGuardia

mar. 1/20

7:29 pm-10:50 am

1 stop10h 21m

$498

LondonNew York

LHR - JFK

LHRJFK

London Heathrow

dom. 3/1

6:50 am-1:20 pm

1 stop11h 30m

New York John F Kennedy Intl

vie. 3/6

10:05 am-7:10 am

1 stop16h 05m

$498

LondonNew York

LGW - JFK

LGWJFK

London Gatwick

dom. 4/26

1:05 pm-3:55 pm

Nonstop7h 50m

New York John F Kennedy Intl

sáb. 5/2

6:20 pm-6:20 am

Nonstop7h 00m

$500

LondonNew York

LHR - JFK

LHRJFK

London Heathrow

lun. 4/27

6:35 am-3:29 pm

1 stop13h 54m

New York John F Kennedy Intl

lun. 5/4

8:05 pm-8:15 am

Nonstop7h 10m

$503

LondonNew York

LHR - LGA

LHRLGA

London Heathrow

sáb. 1/17

6:15 am-7:21 pm

2 stops18h 06m

New York LaGuardia

dom. 1/25

3:40 pm-6:30 am

1 stop9h 50m

$507

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to the United States from

How to get the cheapest flight ticket from London to United States

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to United States?

In general, September is the cheapest month to fly from London to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $479. If you aren’t able to travel during the month of September, then book flights to United States from London during March instead. Flights to United States in March, while not as cheap as those in September, still average around $488.

What is the cheapest day to depart on your flight to United States?

According to our data, Wednesday is the cheapest day to fly to United States from London. The lowest ticket price found for a Wednesday departure recently was $566. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $683. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

What is the cheapest time of day to depart on your flight to United States?

The cheapest time of day to fly to United States is at noon when flights can be purchased for as low as $610. Try not to purchase tickets in the afternoon because they tend to be around $641. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London to United States flight route?

Fly from London Gatwick to Orlando for the best London - United States flight prices

How far in advance should I book a flight to United States?

You are more likely to see cheaper flights to United States from London when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $595 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from London for as low as $532 on momondo.

What cabin class options are available on London to United States flights?

There are 4 cabin classes available to choose from on London to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to United States flights?

You could potentially save up to 1% on your flight if you consider stops on a London to United States flight.

Cheap London to United States flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to United States

Best Price Found

$286

Fastest flight time

7h 25m

Direct flights

Every day

Airports in United States

2 airports
The best one-way flight to United States from London in the past 72 hours is $286. The best round-trip flight deal from London to United States found on momondo in the last 72 hours is $495.
The fastest flight from London to United States takes 7h 25m
Direct flights go from London to United States every day.
There are 2 airports near United States: Newark (EWR), New York John F Kennedy Intl (JFK)
  • When did momondo last update prices for flights from London to United States?

    Prices for flights from London to United States were last updated today.

  • How many operators does momondo search for flights from London to United States?

  • How old do you have to be to fly from London to United States?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to United States.

  • What documentation or ID do you need to fly to United States?

    The required travel and health documents for your United States trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United States. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from London to United States?

Best airlines flying from London to United States

Compare and see reviews for airlines that fly from London to United States with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $83Free CancellationRating
7.2
2,899 reviews
Search JetBlue flights
Norse Atlantic UKPriceFrom $312Free CancellationRating
7.2
51 reviews
Search Norse Atlantic UK flights
DeltaPriceFrom $355Free CancellationRating
7.9
8,011 reviews
Search Delta flights
British AirwaysPriceFrom $400Free CancellationRating
6.7
7,562 reviews
Search British Airways flights
IcelandairPriceFrom $400Free CancellationRating
7.0
584 reviews
Search Icelandair flights
FinnairPriceFrom $404Free CancellationRating
7.6
1,334 reviews
Search Finnair flights
Aer LingusPriceFrom $416Free CancellationRating
7.2
1,384 reviews
Search Aer Lingus flights
SWISSPriceFrom $436Free CancellationRating
7.5
1,804 reviews
Search SWISS flights
Brussels AirlinesPriceFrom $445Free CancellationRating
7.2
373 reviews
Search Brussels Airlines flights
United AirlinesPriceFrom $447Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from London to United States?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to United States. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to United States with flexible booking policies on momondo?

Yes. All flights to United States from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to United States?

momondo helps you find the best flight between London and United States by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to United States right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to United States now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to United States and let you know when they change.

An easier way to manage your United States trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
sáb. 1/3
sáb. 1/10

Find better results for your trip to the United States

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo