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Cheap flights from London to Watertown from $1,192

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 to Watertown departing on 4/11. 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 to Watertown

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
9:15 am - 11:28 pm
LHR
-
ART
19h 13m
1 stop
American Airlines Logo
11:25 am - 6:15 am
ART
-
LHR
13h 50m
2 stops
$1,192American Airlines
Sat, Apr 11 - Sat, Apr 18
American Airlines Logo
11:00 am - 11:28 pm
LHR
-
ART
17h 28m
2 stops
American Airlines Logo
11:25 am - 6:15 am
ART
-
LHR
13h 50m
2 stops
$1,197American Airlines
Sat, Apr 11 - Sat, Apr 18
American Airlines Logo
9:15 am - 11:28 pm
LHR
-
ART
19h 13m
1 stop
American Airlines Logo
11:25 am - 7:50 am
ART
-
LHR
15h 25m
1 stop
$1,260American Airlines
Sat, Apr 11 - Sat, Apr 18

American Airlines flights from London to Watertown, New York

Our best American Airlines deals on London to Watertown, New York flight tickets
American Airlines
Apr 11
LHR9:15 amLondon Heathrow
19h 13m
1 stop
ART11:28 pmWatertown
Apr 18
ART11:25 amWatertown
13h 50m
2 stops
LHR6:15 amLondon Heathrow
$1,192
American Airlines
Apr 11
LHR11:00 amLondon Heathrow
17h 28m
2 stops
ART11:28 pmWatertown
Apr 18
ART11:25 amWatertown
13h 50m
2 stops
LHR6:15 amLondon Heathrow
$1,197
American Airlines
Apr 11
LHR9:15 amLondon Heathrow
19h 13m
1 stop
ART11:28 pmWatertown
Apr 18
ART11:25 amWatertown
15h 25m
1 stop
LHR7:50 amLondon Heathrow
$1,260

momondo Fare Finder

 
Customize your flight search to find flights from London 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 February 27, 2026.
Use the filters below to find and compare flights from London to Watertown, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWatertown

LHR - ART

LHRART

London Heathrow

Sat 4/11

9:15 am-11:28 pm

1 stop19h 13m

Watertown

Sat 4/18

11:25 am-6:15 am

2 stops13h 50m

$1,192

LondonWatertown

LHR - ART

LHRART

London Heathrow

Sat 4/11

11:00 am-11:28 pm

2 stops17h 28m

Watertown

Sat 4/18

11:25 am-6:15 am

2 stops13h 50m

$1,197

LondonWatertown

LHR - ART

LHRART

London Heathrow

Sat 4/11

9:15 am-11:28 pm

1 stop19h 13m

Watertown

Sat 4/18

11:25 am-7:50 am

1 stop15h 25m

$1,260

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from London to Watertown, New York

Are you open to changing your travel dates? Check out the ideal times to fly from London 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 to Watertown, New York (LON to ART) flight deals and tips

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

Fastest flight time

17h 00m

Direct flights

None
The fastest flight from London to Watertown, New York takes 17h 00m
There are no direct flights from London to Watertown, New York. There are no popular flight routes from London to Watertown, New York.
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  • How far is London to Watertown by plane?

    A flight from London to Watertown will travel around 3397.1 mi. Typically, this will take 17h 00m by plane in normal conditions.

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

    Prices for flights from London to Watertown Airport are updated daily.

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

    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 to Watertown Airport.

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

    The necessary travel and health documents for your Watertown Airport 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.

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

    Confirm your travel details to search for the latest offers for flights from London 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 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 collates all your flight options in one place and lets you filter them to find the perfect flight from London to Watertown. momondo saves you time and could save you money on your trip.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Watertown from London.

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

Yes. momondo can track prices for London to Watertown flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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