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Cheap flights from the United States to London from $151

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 12/6. 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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Find the cheapest flights from the United States to London

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

Enter your travel dates to find the best prices.
Air Canada Logo
3:20 pm - 7:10 amLGA-LHR
10h 50m1 stop
Air Canada Logo
1:25 pm - 9:33 pmLHR-LGA
13h 08m1 stop
$488Air Canada
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Mon, Dec 1 - Mon, Dec 8
ITA Airways Logo
4:45 pm - 10:55 amJFK-LCY
13h 10m1 stop
ITA Airways Logo
8:25 am - 6:55 pmLCY-JFK
15h 30m1 stop
$488ITA Airways
Find Deal
Fri, Jan 16 - Wed, Jan 21
United Airlines Logo
6:25 pm - 10:05 amJFK-LHR
10h 40m1 stop
United Airlines Logo
7:00 am - 2:40 pmLHR-JFK
12h 40m1 stop
$494United Airlines
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Fri, Dec 5 - Sun, Dec 7
United Airlines Logo
6:00 am - 10:50 amLGA-LHR
23h 50m1 stop
United Airlines Logo
1:25 pm - 9:52 amLHR-LGA
25h 27m1 stop
$498United Airlines
Find Deal
Tue, Dec 30 - Mon, Jan 12
Delta Logo
7:10 pm - 6:50 amBOS-LHR
6h 40mnonstop
Delta Logo
6:20 am - 1:35 pmLHR-BOS
12h 15m1 stop
$505Delta
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Thu, Dec 4 - Tue, Dec 9
Delta Logo
8:00 pm - 7:50 amBOS-LHR
6h 50mnonstop
Delta Logo
8:40 am - 6:55 pmLHR-BOS
15h 15m1 stop
$506Delta
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Sun, Dec 7 - Mon, Dec 15
British Airways Logo
7:15 pm - 7:00 amBOS-LHR
6h 45mnonstop
British Airways Logo
9:15 am - 7:50 pmLHR-BOS
15h 35m1 stop
$509British Airways
Find Deal
Mon, Dec 1 - Sat, Dec 13
Iberia Logo
8:50 pm - 2:05 pmJFK-LCY
12h 15m1 stop
Iberia Logo
9:10 am - 7:15 pmLCY-JFK
15h 05m1 stop
$530Iberia
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Wed, Jan 14 - Tue, Jan 20
British Airways Logo
9:45 pm - 10:00 amIAD-LHR
7h 15mnonstop
British Airways Logo
4:25 pm - 7:55 pmLHR-IAD
8h 30mnonstop
$582British Airways
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Tue, Dec 2 - Fri, Dec 12
Iberia Logo
10:25 am - 8:35 amLAX-LHR
14h 10m1 stop
Iberia Logo
4:55 pm - 8:25 pmLHR-LAX
11h 30mnonstop
$609Iberia
Find Deal
Tue, Dec 2 - Tue, Dec 9

Delta flights from United States to London

Our best Delta deals on United States to London flight tickets
Delta
Dec 4
BOS7:10 pmBoston Logan Intl
6h 40m
LHR6:50 amLondon Heathrow
Dec 9
LHR6:20 amLondon Heathrow
12h 15m
1 stop
BOS1:35 pmBoston Logan Intl
$505
Find similar
Delta
Dec 7
BOS8:00 pmBoston Logan Intl
6h 50m
LHR7:50 amLondon Heathrow
Dec 15
LHR11:45 amLondon Heathrow
12h 10m
1 stop
BOS6:55 pmBoston Logan Intl
$506
Find similar
Delta
Nov 24
BOS7:10 pmBoston Logan Intl
6h 40m
LHR6:50 amLondon Heathrow
Nov 28
LHR6:30 amLondon Heathrow
11h 50m
1 stop
BOS1:20 pmBoston Logan Intl
$508
Find similar

American Airlines flights from United States to London

Our best American Airlines deals on United States to London flight tickets
American Airlines
Mar 4
LGA10:15 amNew York LaGuardia
16h 15m
2 stops
LGW7:30 amLondon Gatwick
Mar 12
LGW12:30 pmLondon Gatwick
24h 44m
2 stops
LGA9:14 amNew York LaGuardia
$498
Find similar
American Airlines
Jan 15
JFK8:05 pmNew York John F Kennedy Intl
7h 05m
LHR8:10 amLondon Heathrow
Jan 19
LHR11:25 amLondon Heathrow
12h 50m
1 stop
JFK7:15 pmNew York John F Kennedy Intl
$500
Find similar
American Airlines
Nov 23
BOS7:15 pmBoston Logan Intl
6h 45m
LHR7:00 amLondon Heathrow
Dec 8
LHR5:00 pmLondon Heathrow
10h 54m
1 stop
BOS10:54 pmBoston Logan Intl
$522
Find similar

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 November 17, 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

LGA - LHR

LGALHR

New York LaGuardia

Mon 12/1

3:20 pm-7:10 am

1 stop10h 50m

London Heathrow

Mon 12/8

1:25 pm-9:33 pm

1 stop13h 08m

$488

New YorkLondon

JFK - LCY

JFKLCY

New York John F Kennedy Intl

Fri 1/16

4:45 pm-10:55 am

1 stop13h 10m

London City

Wed 1/21

8:25 am-6:55 pm

1 stop15h 30m

$488

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 12/5

6:25 pm-10:05 am

1 stop10h 40m

London Heathrow

Sun 12/7

7:00 am-2:40 pm

1 stop12h 40m

$494

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Tue 12/30

6:00 am-10:50 am

1 stop23h 50m

London Heathrow

Mon 1/12

1:25 pm-9:52 am

1 stop25h 27m

$498

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 12/4

7:10 pm-6:50 am

Nonstop6h 40m

London Heathrow

Tue 12/9

6:20 am-1:35 pm

1 stop12h 15m

$505

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 12/7

8:00 pm-7:50 am

Nonstop6h 50m

London Heathrow

Mon 12/15

8:40 am-6:55 pm

1 stop15h 15m

$506

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 12/1

7:15 pm-7:00 am

Nonstop6h 45m

London Heathrow

Sat 12/13

9:15 am-7:50 pm

1 stop15h 35m

$509

New YorkLondon

JFK - LCY

JFKLCY

New York John F Kennedy Intl

Wed 1/14

8:50 pm-2:05 pm

1 stop12h 15m

London City

Tue 1/20

9:10 am-7:15 pm

1 stop15h 05m

$530

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 12/2

9:45 pm-10:00 am

Nonstop7h 15m

London Heathrow

Fri 12/12

4:25 pm-7:55 pm

Nonstop8h 30m

$582

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Tue 12/2

10:25 am-8:35 am

1 stop14h 10m

London Heathrow

Tue 12/9

4:55 pm-8:25 pm

Nonstop11h 30m

$609

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 Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $633. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $675. 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 $673. 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 $609 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 $570 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

2h 00m

Direct flights

Every day

Airports in London

3 airports
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 $401.
The fastest flight from United States to London takes 2h 00m
Direct flights go from United States to London every day.
There are 3 airports near London: London City (LCY), London Heathrow (LHR), London Gatwick (LGW)
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  • 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
2,905 reviews
Search JetBlue flights
Scandinavian AirlinesPriceFrom $213Free CancellationRating
7.4
1,582 reviews
Search Scandinavian Airlines flights
WestJetPriceFrom $272Free CancellationRating
7.2
3,163 reviews
Search WestJet flights
SWISSPriceFrom $290Free CancellationRating
7.5
1,788 reviews
Search SWISS flights
TAP AIR PORTUGALPriceFrom $293Free CancellationRating
7.1
2,065 reviews
Search TAP AIR PORTUGAL flights
Norse Atlantic UKPriceFrom $349Free CancellationRating
7.2
51 reviews
Search Norse Atlantic UK flights
PLAYPriceFrom $380Free CancellationRating
7.0
103 reviews
Search PLAY flights
Air CanadaPriceFrom $382Free CancellationRating
7.1
10,459 reviews
Search Air Canada flights
KLMPriceFrom $387Free CancellationRating
7.7
1,411 reviews
Search KLM flights
Air FrancePriceFrom $391Free CancellationRating
7.4
1,493 reviews
Search Air France flights

Traveling to a place near London?

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

An easier way to manage your London trip

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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
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport