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Cheap flights from London Heathrow Airport to Watertown from $1,147

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Watertown departing on 11/23. 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

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Find the cheapest flights from London Heathrow Airport to Watertown

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
10:15 am - 11:09 pmLHR-ART
17h 54m1 stop
American Airlines Logo
2:33 pm - 6:35 amART-LHR
11h 02m1 stop
$1,147American Airlines
Find Deal
Sun, Nov 23 - Sun, Nov 30
American Airlines Logo
1:30 pm - 11:09 pmLHR-ART
14h 39m2 stops
American Airlines Logo
2:33 pm - 7:50 amART-LHR
12h 17m1 stop
$1,152American Airlines
Find Deal
Sun, Nov 23 - Sun, Nov 30
American Airlines Logo
1:30 pm - 11:09 pmLHR-ART
14h 39m2 stops
American Airlines Logo
2:33 pm - 9:20 amART-LHR
13h 47m2 stops
$1,215American Airlines
Find Deal
Sun, Nov 23 - Sun, Nov 30
American Airlines Logo
5:00 pm - 10:20 pmLHR-ART
33h 20m2 stops
American Airlines Logo
6:22 am - 10:30 amART-LHR
23h 08m2 stops
$1,427American Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
5:05 pm - 10:20 pmLHR-ART
33h 15m2 stops
American Airlines Logo
4:37 pm - 10:20 amART-LHR
12h 43m1 stop
$1,428American Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
11:40 am - 10:20 pmLHR-ART
38h 40m2 stops
American Airlines Logo
4:37 pm - 7:50 amART-LHR
10h 13m1 stop
$1,433American Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
10:05 am - 10:20 pmLHR-ART
16h 15m1 stop
American Airlines Logo
4:37 pm - 10:20 amART-LHR
12h 43m1 stop
$1,471American Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
1:10 pm - 10:20 pmLHR-ART
13h 10m1 stop
American Airlines Logo
4:37 pm - 10:20 amART-LHR
12h 43m1 stop
$1,475American Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
10:05 am - 10:20 pmLHR-ART
16h 15m1 stop
American Airlines Logo
4:37 pm - 10:20 amART-LHR
12h 43m1 stop
$1,486American Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31

American Airlines flights from London Heathrow Airport to Watertown, New York

Our best American Airlines deals on London Heathrow Airport to Watertown, New York flight tickets
American Airlines
Nov 23
LHR10:15 amLondon Heathrow
17h 54m
1 stop
ART11:09 pmWatertown
Nov 30
ART2:33 pmWatertown
11h 02m
1 stop
LHR6:35 amLondon Heathrow
$1,147
Find similar
American Airlines
Nov 23
LHR1:30 pmLondon Heathrow
14h 39m
2 stops
ART11:09 pmWatertown
Nov 30
ART2:33 pmWatertown
12h 17m
1 stop
LHR7:50 amLondon Heathrow
$1,152
Find similar
American Airlines
Nov 23
LHR1:30 pmLondon Heathrow
14h 39m
2 stops
ART11:09 pmWatertown
Nov 30
ART2:33 pmWatertown
13h 47m
2 stops
LHR9:20 amLondon Heathrow
$1,215
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport to Watertown, New York 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 9, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Watertown, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWatertown

LHR - ART

LHRART

London Heathrow

Sun 11/23

10:15 am-11:09 pm

1 stop17h 54m

Watertown

Sun 11/30

2:33 pm-6:35 am

1 stop11h 02m

$1,147

LondonWatertown

LHR - ART

LHRART

London Heathrow

Sun 11/23

1:30 pm-11:09 pm

2 stops14h 39m

Watertown

Sun 11/30

2:33 pm-7:50 am

1 stop12h 17m

$1,152

LondonWatertown

LHR - ART

LHRART

London Heathrow

Sun 11/23

1:30 pm-11:09 pm

2 stops14h 39m

Watertown

Sun 11/30

2:33 pm-9:20 am

2 stops13h 47m

$1,215

LondonWatertown

LHR - ART

LHRART

London Heathrow

Fri 3/27

5:00 pm-10:20 pm

2 stops33h 20m

Watertown

Tue 3/31

6:22 am-10:30 am

2 stops23h 08m

$1,427

LondonWatertown

LHR - ART

LHRART

London Heathrow

Fri 3/27

5:05 pm-10:20 pm

2 stops33h 15m

Watertown

Tue 3/31

4:37 pm-10:20 am

1 stop12h 43m

$1,428

LondonWatertown

LHR - ART

LHRART

London Heathrow

Fri 3/27

11:40 am-10:20 pm

2 stops38h 40m

Watertown

Tue 3/31

4:37 pm-7:50 am

1 stop10h 13m

$1,433

LondonWatertown

LHR - ART

LHRART

London Heathrow

Fri 3/27

10:05 am-10:20 pm

1 stop16h 15m

Watertown

Tue 3/31

4:37 pm-10:20 am

1 stop12h 43m

$1,471

LondonWatertown

LHR - ART

LHRART

London Heathrow

Fri 3/27

1:10 pm-10:20 pm

1 stop13h 10m

Watertown

Tue 3/31

4:37 pm-10:20 am

1 stop12h 43m

$1,475

LondonWatertown

LHR - ART

LHRART

London Heathrow

Fri 3/27

10:05 am-10:20 pm

1 stop16h 15m

Watertown

Tue 3/31

4:37 pm-10:20 am

1 stop12h 43m

$1,486

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from London Heathrow Airport to Watertown, New York

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Watertown, New York according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to Watertown, New York (LHR to ART) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Watertown, New York

Direct flights

None
There are no direct flights from London Heathrow Airport to Watertown, New York. There are no popular flight routes from London Heathrow Airport to Watertown, New York.
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  • How far is London Heathrow to Watertown by plane?

    The distance between London Heathrow and Watertown is about 3384.8 mi. Flights usually cover this in 13h 10m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London Heathrow Airport to Watertown Airport?

    Prices for flights from London Heathrow Airport to Watertown Airport were last updated today.

  • How old do you have to be to fly from London Heathrow Airport to Watertown Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Watertown Airport.

  • What documentation or ID do you need to fly to Watertown Airport?

    The travel and health documents you'll need for your trip to Watertown Airport 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 Watertown Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from London Heathrow Airport to Watertown, New York?

    Confirm your travel details to search for the latest offers for flights from London Heathrow Airport to Watertown, New York. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from London Heathrow Airport to Watertown, New York with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Watertown?

Book flights to Watertown if you plan to visit one of these locations
Alexandria Bay
Clayton

Why use momondo?

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

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

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

Flights from London to Watertown with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Watertown?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Watertown.

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

If you are simply researching potential flights to Watertown, momondo offers a useful price alert feature which will track prices for flights to Watertown from London and alert you when they change.

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