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$1,044+ Cheap flights from Watertown, NY (ART) to Heathrow (LHR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
ART — LHR
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap flight deals from Watertown to Heathrow

Cheapest flights from Watertown to Heathrow
Explore the most affordable flight options available from Watertown to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

This Finnair deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/94:00 pm
ART
-
LHR
1 stop9h 50m
Multiple Airlines
Sat 7/181:45 pm
LHR
-
ART
1 stop15h 07m
Multiple Airlines
Deal found 1/26$1,044
This Finnair deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/116:00 am
ART
-
LHR
1 stop19h 50m
Multiple Airlines
Sat 7/181:45 pm
LHR
-
ART
1 stop15h 07m
Multiple Airlines
Deal found 1/27$1,047
This American Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:00 am
ART
-
LHR
1 stop19h 50m
American Airlines
Sat 7/182:30 pm
LHR
-
ART
2 stops14h 22m
American Airlines
Deal found 1/26$1,048
This American Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/144:06 pm
ART
-
LHR
1 stop10h 44m
American Airlines
Sat 2/2110:15 am
LHR
-
ART
1 stop17h 40m
American Airlines
Deal found 1/27$1,288

Find flight deals from Watertown to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Watertown (ART) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,044
(Finnair)
Provider with most accurate pricing for Watertown-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Watertown-London Heathrow flights.
Search Deals
From Watertown to London Heathrow
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Watertown to Heathrow 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, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
Use the filters below to find and compare flights from Watertown to London Heathrow Airport that are best for you.

Fly from

Watertown

Fly to

Heathrow

Route

Depart

Return

Price

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

$1,044

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

$1,044

WatertownLondon

ART - LHR

ARTLHR

Watertown

Thu 7/9

6:00 am-6:50 am

1 stop19h 50m

London Heathrow

Sat 7/18

2:30 pm-11:52 pm

2 stops14h 22m

$1,048

WatertownLondon

ART - LHR

ARTLHR

Watertown

Sat 7/11

4:00 pm-10:20 am

1 stop13h 20m

London Heathrow

Sat 7/18

2:30 pm-11:52 pm

2 stops14h 22m

$1,048

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

  • Most accurate provider: When it comes to deals on Watertown, New York-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Watertown, New York-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Watertown, New York-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Watertown, New York-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Watertown, New York-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Watertown to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Watertown with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Watertown to London Heathrow Airport

What is the cheapest month to book a flight from Watertown, New York to London Heathrow Airport?

Currently, December is the cheapest month in which you can book a flight from Watertown, New York to London Heathrow Airport (average of $227). Flying from Watertown, New York to London Heathrow Airport in June is currently the most expensive (average of $878). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Watertown to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Watertown to London Heathrow?

    Watertown (ART), located 5.6 mi from the city center, is the airport you fly out of when you book flights from Watertown to London Heathrow. 0 airlines have flights from Watertown to London Heathrow on a regular basis. Booking flights from Watertown to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

  • How long is the flight from Watertown, New York to London Heathrow Airport?

    Departing from Watertown, New York to London Heathrow Airport will take you 19h 50m. Watertown, New York and London Heathrow Airport are separated by a distance of 3388 mi.

  • Can I find deals for flights from Watertown to Heathrow that include hotel bookings?

    Yes. In addition to deals on Watertown to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Watertown to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Watertown to Heathrow.

  • Can I find deals for business class flights from Watertown to Heathrow?

    Yes. Cheapflights offers flight deals from Watertown to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Watertown, New York to London Heathrow Airport?

    Currently, December is the cheapest month in which you can book a flight from Watertown, New York to London Heathrow Airport (average of $227). Flying from Watertown, New York to London Heathrow Airport in June is currently the most expensive (average of $878). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Croydon
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

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