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Cheap flights from London Heathrow Airport to Watertown from $656

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 Watertown 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

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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
12:35 pm - 6:14 pm
LHR
-
ART
34h 39m2 stops
American Airlines Logo
6:50 pm - 2:50 pm
ART
-
LHR
15h 00m2 stops
$994American Airlines
Thu, Jan 22 - Mon, Jan 26
American Airlines Logo
1:10 pm - 9:23 pm
LHR
-
ART
13h 13m1 stop
American Airlines Logo
6:50 pm - 2:50 pm
ART
-
LHR
15h 00m2 stops
$1,025American Airlines
Thu, Jan 22 - Mon, Jan 26
American Airlines Logo
1:10 pm - 9:23 pm
LHR
-
ART
13h 13m1 stop
American Airlines Logo
7:00 am - 6:35 am
ART
-
LHR
18h 35m1 stop
$1,054American Airlines
Thu, Jan 22 - Mon, Jan 26
American Airlines Logo
8:15 am - 9:23 pm
LHR
-
ART
18h 08m2 stops
American Airlines Logo
6:50 pm - 3:05 pm
ART
-
LHR
15h 15m2 stops
$1,089American Airlines
Thu, Jan 15 - Thu, Jan 22
American Airlines Logo
8:15 am - 9:23 pm
LHR
-
ART
18h 08m2 stops
American Airlines Logo
7:00 am - 6:35 am
ART
-
LHR
18h 35m1 stop
$1,094American Airlines
Thu, Jan 15 - Thu, Jan 22
American Airlines Logo
10:15 am - 9:23 pm
LHR
-
ART
16h 08m1 stop
American Airlines Logo
6:50 pm - 5:30 pm
ART
-
LHR
17h 40m2 stops
$1,097American Airlines
Fri, Jan 16 - Fri, Jan 23
American Airlines Logo
10:15 am - 9:23 pm
LHR
-
ART
16h 08m1 stop
American Airlines Logo
7:00 am - 7:50 am
ART
-
LHR
19h 50m1 stop
$1,099American Airlines
Thu, Jan 15 - Thu, Jan 22
American Airlines Logo
10:15 am - 9:23 pm
LHR
-
ART
16h 08m1 stop
American Airlines Logo
7:00 am - 7:50 am
ART
-
LHR
19h 50m1 stop
$1,101American Airlines
Fri, Jan 16 - Fri, Jan 23
American Airlines Logo
9:55 am - 9:23 pm
LHR
-
ART
16h 28m2 stops
American Airlines Logo
6:50 pm - 12:30 pm
ART
-
LHR
12h 40m2 stops
$1,112American Airlines
Fri, Jan 16 - Fri, Jan 23

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
Jan 22
LHR12:35 pmLondon Heathrow
34h 39m
2 stops
ART6:14 pmWatertown
Jan 26
ART6:50 pmWatertown
15h 00m
2 stops
LHR2:50 pmLondon Heathrow
$994
Find similar
American Airlines
Jan 22
LHR1:10 pmLondon Heathrow
13h 13m
1 stop
ART9:23 pmWatertown
Jan 26
ART6:50 pmWatertown
15h 00m
2 stops
LHR2:50 pmLondon Heathrow
$1,025
Find similar
American Airlines
Jan 22
LHR1:10 pmLondon Heathrow
13h 13m
1 stop
ART9:23 pmWatertown
Jan 26
ART7:00 amWatertown
18h 35m
1 stop
LHR6:35 amLondon Heathrow
$1,054
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 December 4, 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

Thu 1/22

12:35 pm-6:14 pm

2 stops34h 39m

Watertown

Mon 1/26

6:50 pm-2:50 pm

2 stops15h 00m

$994

LondonWatertown

LHR - ART

LHRART

London Heathrow

Thu 1/22

1:10 pm-9:23 pm

1 stop13h 13m

Watertown

Mon 1/26

6:50 pm-2:50 pm

2 stops15h 00m

$1,025

LondonWatertown

LHR - ART

LHRART

London Heathrow

Thu 1/22

1:10 pm-9:23 pm

1 stop13h 13m

Watertown

Mon 1/26

7:00 am-6:35 am

1 stop18h 35m

$1,054

LondonWatertown

LHR - ART

LHRART

London Heathrow

Thu 1/15

8:15 am-9:23 pm

2 stops18h 08m

Watertown

Thu 1/22

6:50 pm-3:05 pm

2 stops15h 15m

$1,089

LondonWatertown

LHR - ART

LHRART

London Heathrow

Thu 1/15

8:15 am-9:23 pm

2 stops18h 08m

Watertown

Thu 1/22

7:00 am-6:35 am

1 stop18h 35m

$1,094

LondonWatertown

LHR - ART

LHRART

London Heathrow

Fri 1/16

10:15 am-9:23 pm

1 stop16h 08m

Watertown

Fri 1/23

6:50 pm-5:30 pm

2 stops17h 40m

$1,097

LondonWatertown

LHR - ART

LHRART

London Heathrow

Thu 1/15

10:15 am-9:23 pm

1 stop16h 08m

Watertown

Thu 1/22

7:00 am-7:50 am

1 stop19h 50m

$1,099

LondonWatertown

LHR - ART

LHRART

London Heathrow

Fri 1/16

10:15 am-9:23 pm

1 stop16h 08m

Watertown

Fri 1/23

7:00 am-7:50 am

1 stop19h 50m

$1,101

LondonWatertown

LHR - ART

LHRART

London Heathrow

Fri 1/16

9:55 am-9:23 pm

2 stops16h 28m

Watertown

Fri 1/23

6:50 pm-12:30 pm

2 stops12h 40m

$1,112

LondonWatertown

LHR - ART

LHRART

London Heathrow

Wed 3/18

7:35 am-10:55 pm

2 stops19h 20m

$656

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Watertown from

How to get the cheapest flight ticket from London Heathrow Airport to Watertown, New York

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 airline that flies from London Heathrow to Watertown?

American Airlines is the most popular carrier operating from London Heathrow to Watertown

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

Fastest flight time

13h 13m

Direct flights

None
The fastest flight from London Heathrow Airport to Watertown, New York takes 13h 13m
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.
Search flight deals

  • 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 13m, 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.

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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