Cheap flights from the United States to London from $139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to London departing on 11/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Recent round-trip flight deals from the United States to London

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ITA Airways Logo
4:45 pm - 4:10 pmJFK-LCY
18h 25m1 stop
ITA Airways Logo
1:15 pm - 6:55 pmLCY-JFK
34h 40m2 stops
$470ITA Airways
Find Deal
Mon, Nov 10 - Wed, Nov 12
Virgin Atlantic Logo
6:00 pm - 6:20 amJFK-LHR
7h 20mnonstop
Virgin Atlantic Logo
8:00 pm - 10:55 pmLHR-JFK
7h 55mnonstop
$470Virgin Atlantic
Find Deal
Mon, Nov 10 - Tue, Nov 18
Iberia Logo
7:15 pm - 7:00 amBOS-LHR
6h 45mnonstop
Iberia Logo
11:25 am - 7:50 pmLHR-BOS
13h 25m1 stop
$495Iberia
Find Deal
Wed, Dec 3 - Wed, Jan 21
United Airlines Logo
3:40 pm - 7:10 amBOS-LHR
10h 30m1 stop
United Airlines Logo
1:45 pm - 8:00 pmLHR-BOS
11h 15m1 stop
$497United Airlines
Find Deal
Wed, Nov 19 - Mon, Nov 24
United Airlines Logo
9:40 am - 7:55 amBOS-LHR
18h 15m1 stop
United Airlines Logo
1:45 pm - 8:20 pmLHR-BOS
11h 35m1 stop
$502United Airlines
Find Deal
Wed, Oct 29 - Mon, Nov 17
Delta Logo
7:10 pm - 6:50 amBOS-LHR
6h 40mnonstop
Delta Logo
6:20 am - 1:40 pmLHR-BOS
12h 20m1 stop
$507Delta
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Tue, Nov 4 - Wed, Nov 12
Delta Logo
8:00 pm - 7:50 amBOS-LHR
6h 50mnonstop
Delta Logo
8:55 am - 4:20 pmLHR-BOS
12h 25m1 stop
$508Delta
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Wed, Nov 19 - Fri, Nov 21
British Airways Logo
9:35 pm - 9:30 amEWR-LHR
6h 55mnonstop
British Airways Logo
4:30 pm - 7:35 pmLHR-EWR
8h 05mnonstop
$514British Airways
Find Deal
Wed, Nov 12 - Mon, Nov 17
Iberia Logo
7:25 pm - 7:00 amBOS-LHR
6h 35mnonstop
Iberia Logo
1:30 pm - 3:55 pmLHR-BOS
7h 25mnonstop
$518Iberia
Find Deal
Fri, Jan 16 - Mon, Jan 19
British Airways Logo
7:30 am - 7:00 pmBOS-LHR
6h 30mnonstop
British Airways Logo
7:10 pm - 9:55 pmLHR-BOS
7h 45mnonstop
$523British Airways
Find Deal
Fri, Jan 2 - Sun, Jan 18

Iberia flights from United States to London

Our best Iberia deals on United States to London flight tickets
Iberia
Dec 3
BOS7:15 pmBoston Logan Intl
6h 45m
LHR7:00 amLondon Heathrow
Jan 21
LHR11:25 amLondon Heathrow
13h 25m
1 stop
BOS7:50 pmBoston Logan Intl
Iberia
Nov 3
JFK9:45 pmNew York John F Kennedy Intl
30h 35m
1 stop
LHR9:20 amLondon Heathrow
Nov 12
LHR11:25 amLondon Heathrow
12h 50m
1 stop
JFK7:15 pmNew York John F Kennedy Intl
Iberia
Jan 16
BOS7:25 pmBoston Logan Intl
6h 35m
LHR7:00 amLondon Heathrow
Jan 19
LHR1:30 pmLondon Heathrow
7h 25m
BOS3:55 pmBoston Logan Intl

TAP AIR PORTUGAL flights from United States to London

Our best TAP AIR PORTUGAL deals on United States to London flight tickets
TAP AIR PORTUGAL
Dec 4
JFK10:00 pmNew York John F Kennedy Intl
14h 30m
1 stop
LHR5:30 pmLondon Heathrow
Dec 9
LHR8:15 amLondon Heathrow
16h 50m
1 stop
JFK8:05 pmNew York John F Kennedy Intl
TAP AIR PORTUGAL
Dec 1
JFK10:00 pmNew York John F Kennedy Intl
14h 30m
1 stop
LHR5:30 pmLondon Heathrow
Dec 7
LHR7:55 pmLondon Heathrow
29h 10m
1 stop
JFK8:05 pmNew York John F Kennedy Intl
TAP AIR PORTUGAL
Dec 2
BOS6:05 pmBoston Logan Intl
18h 25m
1 stop
LHR5:30 pmLondon Heathrow
Dec 9
LHR6:00 amLondon Heathrow
13h 45m
1 stop
BOS2:45 pmBoston Logan Intl

momondo Fare Finder

 
Customize your flight search to find flights from United States to London 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 October 25, 2025.
Use the filters below to find and compare flights from the United States to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

New YorkLondon

JFK - LCY

JFKLCY

New York John F Kennedy Intl

Mon 11/10

4:45 pm-4:10 pm

1 stop18h 25m

London City

Wed 11/12

1:15 pm-6:55 pm

2 stops34h 40m

$470

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Mon 11/10

6:00 pm-6:20 am

Nonstop7h 20m

London Heathrow

Tue 11/18

8:00 pm-10:55 pm

Nonstop7h 55m

$470

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 12/3

7:15 pm-7:00 am

Nonstop6h 45m

London Heathrow

Wed 1/21

11:25 am-7:50 pm

1 stop13h 25m

$495

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 11/19

3:40 pm-7:10 am

1 stop10h 30m

London Heathrow

Mon 11/24

1:45 pm-8:00 pm

1 stop11h 15m

$497

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 10/29

9:40 am-7:55 am

1 stop18h 15m

London Heathrow

Mon 11/17

1:45 pm-8:20 pm

1 stop11h 35m

$502

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 11/4

7:10 pm-6:50 am

Nonstop6h 40m

London Heathrow

Wed 11/12

6:20 am-1:40 pm

1 stop12h 20m

$507

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 11/19

8:00 pm-7:50 am

Nonstop6h 50m

London Heathrow

Fri 11/21

8:55 am-4:20 pm

1 stop12h 25m

$508

NewarkLondon

EWR - LHR

EWRLHR

Newark

Wed 11/12

9:35 pm-9:30 am

Nonstop6h 55m

London Heathrow

Mon 11/17

4:30 pm-7:35 pm

Nonstop8h 05m

$514

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 1/16

7:25 pm-7:00 am

Nonstop6h 35m

London Heathrow

Mon 1/19

1:30 pm-3:55 pm

Nonstop7h 25m

$518

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 1/2

7:30 am-7:00 pm

Nonstop6h 30m

London Heathrow

Sun 1/18

7:10 pm-9:55 pm

Nonstop7h 45m

$523

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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

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 London?

The cheapest month to fly to London from United States is in January. Flight prices, which tend to average around $414, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from United States averaging around $506.

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from United States to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $632. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $676. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from United States at noon is the least expensive time of day to depart. momondo users have found prices as low as $500 when looking at flights departing at noon. Flights to London are more costly in the evening, with an average ticket price of $672. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest United States to London flight route?

Fly from New York John F Kennedy Intl to London Gatwick for the best United States - London flight prices

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $612 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from United States for as low as $560 on momondo.

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

There are 4 cabin classes available to choose from on United States to London 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 United States to London flights?

No. A direct flight is the cheapest option for a flight between United States to London.

Cheap United States to London flight deals and tips

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

Best Price Found

$99

Fastest flight time

6h 30m

Direct flights

Every day

Airports in London

1 airport
The best one-way flight to London from United States in the past 72 hours is $99. The best round-trip flight deal from United States to London found on momondo in the last 72 hours is $385.
The fastest flight from United States to London takes 6h 30m
Direct flights go from United States to London every day.
There is 1 airport near London: London Heathrow (LHR)
  • When did momondo last update prices for flights from United States to London?

    Prices for flights from United States to London are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to London.

  • What documentation or ID do you need to fly to London?

    The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from United States to London

Compare and see reviews for airlines that fly from United States to London with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $45Free CancellationRating
7.2
2,909 reviews
Search JetBlue flights
Scandinavian AirlinesPriceFrom $203Free CancellationRating
7.4
1,541 reviews
Search Scandinavian Airlines flights
WestJetPriceFrom $272Free CancellationRating
7.2
3,143 reviews
Search WestJet flights
SWISSPriceFrom $290Free CancellationRating
7.5
1,772 reviews
Search SWISS flights
TAP AIR PORTUGALPriceFrom $293Free CancellationRating
7.1
2,031 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom $340Free CancellationRating
7.4
1,477 reviews
Search Air France flights
Norse Atlantic UKPriceFrom $350Free CancellationRating
7.2
50 reviews
Search Norse Atlantic UK flights
LufthansaPriceFrom $363Free CancellationRating
6.8
7,524 reviews
Search Lufthansa flights
KLMPriceFrom $366Free CancellationRating
7.7
1,405 reviews
Search KLM flights
PLAYPriceFrom $380Free CancellationRating
7.0
103 reviews
Search PLAY flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Chelmsford
Colchester
Folkestone
Romford
Cobham
Wembley
Ilford
Stansted
Watford

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from United States.

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

Yes. momondo allows you to filter the results for United States to London flights to just show those with flexible booking policies.

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

Once all potential United States to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of United States to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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1 adult
Mon 11/24
Mon 12/1

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London