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Cheap flights from Watertown, New York to London from $523

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Watertown, New York to London departing on 5/4. 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 Watertown, New York to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
4:00 pm - 10:20 am
ART
-
LHR
13h 20m
1 stop
American Airlines Logo
2:30 pm - 11:52 pm
LHR
-
ART
14h 22m
2 stops
$1,052American Airlines
Thu, Jul 9 - Sat, Jul 18
Multiple Airlines Logo
4:00 pm - 6:50 am
ART
-
LHR
9h 50m
1 stop
Multiple Airlines Logo
1:45 pm - 11:52 pm
LHR
-
ART
15h 07m
1 stop
$1,077Multiple Airlines
Thu, Jul 9 - Sat, Jul 18
Multiple Airlines Logo
4:00 pm - 6:50 am
ART
-
LHR
9h 50m
1 stop
Multiple Airlines Logo
1:45 pm - 11:52 pm
LHR
-
ART
15h 07m
1 stop
$1,078Multiple Airlines
Thu, Jul 9 - Sat, Jul 18
Multiple Airlines Logo
4:00 pm - 6:50 am
ART
-
LHR
9h 50m
1 stop
Multiple Airlines Logo
1:45 pm - 11:52 pm
LHR
-
ART
15h 07m
1 stop
$1,110Multiple Airlines
Sat, Jul 11 - Sat, Jul 18
Multiple Airlines Logo
4:00 pm - 6:50 am
ART
-
LHR
9h 50m
1 stop
Multiple Airlines Logo
1:45 pm - 11:52 pm
LHR
-
ART
15h 07m
1 stop
$1,111Multiple Airlines
Sat, Jul 11 - Sat, Jul 18
Multiple Airlines Logo
4:00 pm - 6:50 am
ART
-
LHR
9h 50m
1 stop
Multiple Airlines Logo
1:45 pm - 11:52 pm
LHR
-
ART
15h 07m
1 stop
$1,167Multiple Airlines
Thu, Jul 9 - Sat, Jul 18
American Airlines Logo
4:00 pm - 10:15 am
ART
-
LHR
13h 15m
2 stops
American Airlines Logo
1:00 pm - 11:52 pm
LHR
-
ART
15h 52m
2 stops
$1,272American Airlines
Thu, Jul 9 - Sat, Jul 18
American Airlines Logo
4:00 pm - 11:40 am
ART
-
LHR
14h 40m
2 stops
American Airlines Logo
2:30 pm - 11:52 pm
LHR
-
ART
14h 22m
2 stops
$1,286American Airlines
Sat, Jul 11 - Sat, Jul 18
American Airlines Logo
4:00 pm - 11:40 am
ART
-
LHR
14h 40m
2 stops
American Airlines Logo
2:30 pm - 11:52 pm
LHR
-
ART
14h 22m
2 stops
$1,287American Airlines
Sat, Jul 11 - Sat, Jul 18
American Airlines Logo
4:00 pm - 10:15 am
ART
-
LHR
13h 15m
2 stops
American Airlines Logo
2:30 pm - 11:52 pm
LHR
-
ART
14h 22m
2 stops
$1,320American Airlines
Thu, Jul 9 - Sat, Jul 18

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

Our best American Airlines deals on Watertown, New York to London Heathrow Airport flight tickets
American Airlines
Jul 9
ART4:00 pmWatertown
13h 20m
1 stop
LHR10:20 amLondon Heathrow
Jul 18
LHR2:30 pmLondon Heathrow
14h 22m
2 stops
ART11:52 pmWatertown
$1,052
American Airlines
Jul 9
ART4:00 pmWatertown
13h 15m
2 stops
LHR10:15 amLondon Heathrow
Jul 18
LHR1:00 pmLondon Heathrow
15h 52m
2 stops
ART11:52 pmWatertown
$1,272
American Airlines
Jul 11
ART4:00 pmWatertown
14h 40m
2 stops
LHR11:40 amLondon Heathrow
Jul 18
LHR2:30 pmLondon Heathrow
14h 22m
2 stops
ART11:52 pmWatertown
$1,286

momondo Fare Finder

 
Customize your flight search to find flights from Watertown, New York to London Heathrow Airport 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 6, 2026.
Use the filters below to find and compare flights from Watertown, New York to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

WatertownLondon

ART - LHR

ARTLHR

Watertown

Thu 7/9

4:00 pm-10:20 am

1 stop13h 20m

London Heathrow

Sat 7/18

2:30 pm-11:52 pm

2 stops14h 22m

$1,052

WatertownLondon

ART - LHR

ARTLHR

Watertown

Thu 7/9

4:00 pm-6:50 am

1 stop9h 50m

London Heathrow

Sat 7/18

1:45 pm-11:52 pm

1 stop15h 07m

$1,077

WatertownLondon

ART - LHR

ARTLHR

Watertown

Thu 7/9

4:00 pm-6:50 am

1 stop9h 50m

London Heathrow

Sat 7/18

1:45 pm-11:52 pm

1 stop15h 07m

$1,078

WatertownLondon

ART - LHR

ARTLHR

Watertown

Sat 7/11

4:00 pm-6:50 am

1 stop9h 50m

London Heathrow

Sat 7/18

1:45 pm-11:52 pm

1 stop15h 07m

$1,110

WatertownLondon

ART - LHR

ARTLHR

Watertown

Sat 7/11

4:00 pm-6:50 am

1 stop9h 50m

London Heathrow

Sat 7/18

1:45 pm-11:52 pm

1 stop15h 07m

$1,111

WatertownLondon

ART - LHR

ARTLHR

Watertown

Thu 7/9

4:00 pm-6:50 am

1 stop9h 50m

London Heathrow

Sat 7/18

1:45 pm-11:52 pm

1 stop15h 07m

$1,167

WatertownLondon

ART - LHR

ARTLHR

Watertown

Thu 7/9

4:00 pm-10:15 am

2 stops13h 15m

London Heathrow

Sat 7/18

1:00 pm-11:52 pm

2 stops15h 52m

$1,272

WatertownLondon

ART - LHR

ARTLHR

Watertown

Sat 7/11

4:00 pm-11:40 am

2 stops14h 40m

London Heathrow

Sat 7/18

2:30 pm-11:52 pm

2 stops14h 22m

$1,286

WatertownLondon

ART - LHR

ARTLHR

Watertown

Sat 7/11

4:00 pm-11:40 am

2 stops14h 40m

London Heathrow

Sat 7/18

2:30 pm-11:52 pm

2 stops14h 22m

$1,287

WatertownLondon

ART - LHR

ARTLHR

Watertown

Thu 7/9

4:00 pm-10:15 am

2 stops13h 15m

London Heathrow

Sat 7/18

2:30 pm-11:52 pm

2 stops14h 22m

$1,320

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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See travel insights to London from

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

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 Watertown to London Heathrow?

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

What airlines fly to London Heathrow Airport?

Delta, Virgin Atlantic and American Airlines are the top three most popular airlines that fly to London Heathrow Airport from Watertown, New York according to our data. Delta is the first choice among our users, with 36% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 6 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

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

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

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

Fastest flight time

9h 50m

Direct flights

None
The fastest flight from Watertown, New York to London Heathrow Airport takes 9h 50m
There are no direct flights from Watertown, New York to London Heathrow Airport. There are no popular flight routes from Watertown, New York to London Heathrow Airport.
Search flight deals

  • How far is Watertown to London Heathrow by plane?

    London Heathrow is 3384.8 mi away from Watertown. In terms of flight time, this usually takes a little over 9h 50m.

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

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

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

    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 Watertown Airport to London Heathrow Airport.

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

    The necessary travel and health documents for your London Heathrow 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.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Guildford
Crawley
Wembley
Dartford
Stratford-upon-Avon
Hayes
Croydon
Brentwood
Harrow
Watford
Cobham
Folkestone
Romford
Stansted

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Watertown to London for you.

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

Flights from Watertown to London 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 Watertown to London?

Once all potential Watertown 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 Watertown to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Watertown to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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