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Cheap flights from London Heathrow Airport to the United States from $332

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 Heathrow Airport to the United States departing on 1/12. 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 London Heathrow Airport to the United States

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
8:15 am - 8:10 pmLHR-BOS
16h 55m1 stop
TAP AIR PORTUGAL Logo
10:45 pm - 5:30 pmBOS-LHR
13h 45m1 stop
$448TAP AIR PORTUGAL
Find Deal
Thu, Nov 20 - Sun, Nov 30
TAP AIR PORTUGAL Logo
12:25 pm - 8:10 pmLHR-BOS
12h 45m1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 12:40 pmBOS-LHR
13h 35m1 stop
$449TAP AIR PORTUGAL
Find Deal
Fri, Dec 5 - Mon, Dec 8
TAP AIR PORTUGAL Logo
8:00 am - 8:45 pmLHR-BOS
17h 45m1 stop
TAP AIR PORTUGAL Logo
10:45 pm - 6:50 pmBOS-LHR
15h 05m1 stop
$451TAP AIR PORTUGAL
Find Deal
Wed, Apr 1 - Thu, Apr 9
TAP AIR PORTUGAL Logo
7:55 pm - 2:35 pmLHR-BOS
23h 40m1 stop
TAP AIR PORTUGAL Logo
10:45 pm - 5:30 pmBOS-LHR
13h 45m1 stop
$452TAP AIR PORTUGAL
Find Deal
Thu, Dec 4 - Sun, Dec 7
Aer Lingus Logo
7:50 am - 6:30 pmLHR-LAX
18h 40m1 stop
Aer Lingus Logo
9:15 pm - 9:05 pmLAX-LHR
16h 50m1 stop
$536Aer Lingus
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Fri, Feb 27 - Mon, Mar 16
United Airlines Logo
6:30 am - 7:03 pmLHR-LGA
17h 33m2 stops
United Airlines Logo
7:45 pm - 7:10 amLGA-LHR
30h 25m1 stop
$556United Airlines
Find Deal
Tue, Dec 2 - Wed, Dec 24
Virgin Atlantic Logo
9:40 am - 3:30 pmLHR-LGA
10h 50m1 stop
Virgin Atlantic Logo
4:30 pm - 6:50 amLGA-LHR
9h 20m1 stop
$575Virgin Atlantic
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Tue, Nov 25 - Tue, Dec 2
Virgin Atlantic Logo
6:30 am - 12:45 pmLHR-LAX
13h 15m1 stop
Virgin Atlantic Logo
4:05 pm - 10:30 amLAX-LHR
10h 25mnonstop
$578Virgin Atlantic
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Mon, Mar 23 - Sun, Apr 5
United Airlines Logo
1:25 pm - 7:02 pmLHR-LGA
10h 37m1 stop
United Airlines Logo
2:55 pm - 6:40 amLGA-LHR
10h 45m1 stop
$578United Airlines
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Tue, Dec 2 - Tue, Jan 20
Lufthansa Logo
7:40 am - 2:50 pmLHR-SFO
15h 10m1 stop
Lufthansa Logo
5:25 pm - 12:00 pmSFO-LHR
10h 35mnonstop
$585Lufthansa
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Wed, Nov 26 - Wed, Dec 3

Aer Lingus flights from London Heathrow Airport to United States

Our best Aer Lingus deals on London Heathrow Airport to United States flight tickets
Aer Lingus
Feb 27
LHR7:50 amLondon Heathrow
18h 40m
1 stop
LAX6:30 pmLos Angeles
Mar 16
LAX9:15 pmLos Angeles
16h 50m
1 stop
LHR9:05 pmLondon Heathrow
$536
Find similar
Aer Lingus
Nov 5
LHR7:50 amLondon Heathrow
14h 10m
1 stop
MIA5:00 pmMiami
Dec 10
MIA7:05 pmMiami
11h 20m
1 stop
LHR11:25 amLondon Heathrow
$602
Find similar
Aer Lingus
Nov 8
LHR9:50 amLondon Heathrow
13h 45m
1 stop
SFO3:35 pmSan Francisco
Dec 13
SFO5:20 pmSan Francisco
15h 30m
1 stop
LHR4:50 pmLondon Heathrow
$606
Find similar

TAP AIR PORTUGAL flights from London Heathrow Airport to United States

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to United States flight tickets
TAP AIR PORTUGAL
Nov 20
LHR8:15 amLondon Heathrow
16h 55m
1 stop
BOS8:10 pmBoston Logan Intl
Nov 30
BOS10:45 pmBoston Logan Intl
13h 45m
1 stop
LHR5:30 pmLondon Heathrow
$448
Find similar
TAP AIR PORTUGAL
Dec 5
LHR12:25 pmLondon Heathrow
12h 45m
1 stop
BOS8:10 pmBoston Logan Intl
Dec 8
BOS6:05 pmBoston Logan Intl
13h 35m
1 stop
LHR12:40 pmLondon Heathrow
$449
Find similar
TAP AIR PORTUGAL
Apr 1
LHR8:00 amLondon Heathrow
17h 45m
1 stop
BOS8:45 pmBoston Logan Intl
Apr 9
BOS10:45 pmBoston Logan Intl
15h 05m
1 stop
LHR6:50 pmLondon Heathrow
$451
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport 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 October 30, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 11/20

8:15 am-8:10 pm

1 stop16h 55m

Boston Logan Intl

Sun 11/30

10:45 pm-5:30 pm

1 stop13h 45m

$448

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 12/5

12:25 pm-8:10 pm

1 stop12h 45m

Boston Logan Intl

Mon 12/8

6:05 pm-12:40 pm

1 stop13h 35m

$449

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 4/1

8:00 am-8:45 pm

1 stop17h 45m

Boston Logan Intl

Thu 4/9

10:45 pm-6:50 pm

1 stop15h 05m

$451

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 12/4

7:55 pm-2:35 pm

1 stop23h 40m

Boston Logan Intl

Sun 12/7

10:45 pm-5:30 pm

1 stop13h 45m

$452

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Fri 2/27

7:50 am-6:30 pm

1 stop18h 40m

Los Angeles

Mon 3/16

9:15 pm-9:05 pm

1 stop16h 50m

$536

LondonNew York

LHR - LGA

LHRLGA

London Heathrow

Tue 12/2

6:30 am-7:03 pm

2 stops17h 33m

New York LaGuardia

Wed 12/24

7:45 pm-7:10 am

1 stop30h 25m

$556

LondonNew York

LHR - LGA

LHRLGA

London Heathrow

Tue 11/25

9:40 am-3:30 pm

1 stop10h 50m

New York LaGuardia

Tue 12/2

4:30 pm-6:50 am

1 stop9h 20m

$575

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 3/23

6:30 am-12:45 pm

1 stop13h 15m

Los Angeles

Sun 4/5

4:05 pm-10:30 am

Nonstop10h 25m

$578

LondonNew York

LHR - LGA

LHRLGA

London Heathrow

Tue 12/2

1:25 pm-7:02 pm

1 stop10h 37m

New York LaGuardia

Tue 1/20

2:55 pm-6:40 am

1 stop10h 45m

$578

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 11/26

7:40 am-2:50 pm

1 stop15h 10m

San Francisco

Wed 12/3

5:25 pm-12:00 pm

Nonstop10h 35m

$585

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 the United States from

How to get the cheapest flight ticket from London Heathrow Airport 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, March is the cheapest month to fly from London Heathrow Airport to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $510. If you aren’t able to travel during the month of March, then book flights to United States from London Heathrow Airport during September instead. Flights to United States in September, while not as cheap as those in March, still average around $513.

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 Heathrow Airport. The lowest ticket price found for a Wednesday departure recently was $565. 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 $689. 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 $612. Try not to purchase tickets in the evening because they tend to be around $654. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London Heathrow to United States flight route?

Fly from London Heathrow to Boston Logan Intl for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $596 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 Heathrow Airport for as low as $542 on momondo.

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

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

You could potentially save up to 42% on your flight if you consider stops on a London Heathrow Airport to United States flight.

Cheap London Heathrow Airport to United States flight deals and tips

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

Best Price Found

$523

Fastest flight time

7h 25m

Direct flights

Every day

Airports in United States

3 airports
The best one-way flight to United States from London Heathrow Airport in the past 72 hours is $523. The best round-trip flight deal from London Heathrow Airport to United States found on momondo in the last 72 hours is $495.
The fastest flight from London Heathrow Airport to United States takes 7h 25m
Direct flights go from London Heathrow Airport to United States every day.
There are 3 airports near United States: Newark (EWR), Boston Logan Intl (BOS), New York John F Kennedy Intl (JFK)
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  • When did momondo last update prices for flights from London Heathrow Airport to United States?

    Prices for flights from London Heathrow Airport to United States refresh daily.

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

  • How old do you have to be to fly from London Heathrow Airport 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 Heathrow Airport to United States.

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

    The travel and health documents you'll need for your trip to United States may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United States. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from London Heathrow Airport to United States

Compare and see reviews for airlines that fly from London Heathrow Airport to United States with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $83Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights
DeltaPriceFrom $355Free CancellationRating
7.9
7,996 reviews
Search Delta flights
FinnairPriceFrom $382Free CancellationRating
7.6
1,333 reviews
Search Finnair flights
TAP AIR PORTUGALPriceFrom $384Free CancellationRating
7.1
2,040 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom $400Free CancellationRating
6.7
7,487 reviews
Search British Airways flights
United AirlinesPriceFrom $401Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
Aer LingusPriceFrom $412Free CancellationRating
7.2
1,362 reviews
Search Aer Lingus flights
SWISSPriceFrom $436Free CancellationRating
7.5
1,775 reviews
Search SWISS flights
Brussels AirlinesPriceFrom $445Free CancellationRating
7.2
369 reviews
Search Brussels Airlines flights
IcelandairPriceFrom $445Free CancellationRating
7.1
562 reviews
Search Icelandair flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to United States. momondo saves you time and could save you money on your trip.

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

All flight searches from London to United States on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to United States from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of London to United States 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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