Which airports can I use when flying from London Heathrow Airport to Watertown?

Flights from London Heathrow Airport to Watertown usually depart from London Heathrow (LHR) and arrive at Watertown (ART).

Which airports do connecting flights from London Heathrow Airport to Watertown pass through?

Most connecting flights from London Heathrow Airport to Watertown pass through Philadelphia (PHL), which handles 100% of one-stop traffic on this route.

Can I save money by using flexible dates for flights from London Heathrow Airport to Watertown?

Yes. Flexible dates can save you up to 8% on flights from London Heathrow Airport to Watertown. Saturday is the cheapest departure day at $1,505 round-trip on average, while Tuesday is the most expensive at $1,624, a difference of $119. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Do I need a passport to fly from London Heathrow Airport to Watertown?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from London Heathrow Airport to Watertown changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $1,538 to $1,909. That means the highest observed fare was about 24% higher than the lowest one.

What is the time difference between London Heathrow Airport and Watertown?

Watertown is 4 hours behind London Heathrow Airport (Eastern Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

How much is a round-trip flight from London Heathrow Airport to Watertown?

Round-trip flights from London Heathrow Airport to Watertown typically range from $1,505 to $1,567. The lowest price found in the past 5 days was $1,538, on American Airlines.

Which airline is the cheapest to fly from London Heathrow Airport to Watertown?

American Airlines ($1,538) offered the cheapest round-trip ticket from London Heathrow Airport to Watertown in the last 5 days.

What is the cheapest layover airport when flying from London Heathrow Airport to Watertown?

Flights via Philadelphia (PHL) offer the most affordable fares, with an average round-trip price of $1,853. Based on KAYAK data over the past 3 months.

When flying from London Heathrow Airport to Watertown which airport offers the shortest layover?

Philadelphia (PHL) had the shortest average connection time for London Heathrow Airport to Watertown layovers at 6h 57m over the past 3 months.

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Cheapest round-trip

$1,538

Typical prices: $1,505-$1,567

American Airlines

Thu 12/13Thu 12/20

LHR - ART • 2 stops

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Cheap Flights from London to Watertown (LHR-ART)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from London to Watertown

Sun, Dec 13 - Sun, Dec 20

7:30 am - 6:17 pmLHR London Heathrow-ART Watertown

15h 47m2 stops Barcelona-El Prat Philadelphia

5:39 pm - 2:30 pmART Watertown-LHR London Heathrow

15h 51m2 stops Philadelphia Dublin

$1,538American Airlines

Sun, Dec 13 - Sun, Dec 20

10:35 am - 6:17 pmLHR London Heathrow-ART Watertown

12h 42m1 stop Philadelphia

5:39 pm - 2:30 pmART Watertown-LHR London Heathrow

15h 51m2 stops Philadelphia Dublin

$1,560American Airlines

Fri, Dec 11 - Fri, Dec 18

7:30 am - 6:17 pmLHR London Heathrow-ART Watertown

15h 47m2 stops Barcelona-El Prat Philadelphia

5:39 pm - 12:30 pmART Watertown-LHR London Heathrow

13h 51m2 stops Philadelphia Dublin

$1,692American Airlines

Fri, Dec 11 - Fri, Dec 18

10:35 am - 11:01 pmLHR London Heathrow-ART Watertown

17h 26m1 stop Philadelphia

5:39 pm - 2:35 pmART Watertown-LHR London Heathrow

15h 56m2 stops Philadelphia Dublin

$1,714American Airlines

Fri, Dec 11 - Fri, Dec 18

1:10 pm - 11:01 pmLHR London Heathrow-ART Watertown

14h 51m1 stop Philadelphia

6:00 am - 6:35 amART Watertown-LHR London Heathrow

19h 35m1 stop Philadelphia

$1,909Multiple Airlines

Booking Insights

Price, demand and travel trends for London Heathrow Airport to Watertown flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from London Heathrow Airport to Watertown? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to Watertown departing in december.

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Cheapest flight	$1,441

One-way flight from London Heathrow Airport to Watertown

When to book flights from London to Watertown

Are your dates flexible? Find out the best times to travel from London to Watertown based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Do I need a passport to fly from London Heathrow Airport to Watertown?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
Have flight prices from London Heathrow Airport to Watertown changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $1,538 to $1,909. That means the highest observed fare was about 24% higher than the lowest one.
Which airports can I use when flying from London Heathrow Airport to Watertown?
Flights from London Heathrow Airport to Watertown usually depart from London Heathrow (LHR) and arrive at Watertown (ART).
Which airports do connecting flights from London Heathrow Airport to Watertown pass through?
Most connecting flights from London Heathrow Airport to Watertown pass through Philadelphia (PHL), which handles 100% of one-stop traffic on this route.
Can I save money by using flexible dates for flights from London Heathrow Airport to Watertown?
Yes. Flexible dates can save you up to 8% on flights from London Heathrow Airport to Watertown. Saturday is the cheapest departure day at $1,505 round-trip on average, while Tuesday is the most expensive at $1,624, a difference of $119.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
What is the time difference between London Heathrow Airport and Watertown?
Watertown is 4 hours behind London Heathrow Airport (Eastern Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

If your dates are flexible, aim for a Saturday departure and avoid flying on Tuesday. On this route, Saturday flights average $1,505, about $119 less than Tuesday fares (7% savings) based on the last 12 months.

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LHR - ART

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Everything you should know

Cheap Flights from London to Watertown (LHR-ART)

Recent round-trip flight deals from London to Watertown

Recent one-way flight deals from London to Watertown

Price, demand and travel trends for London Heathrow Airport to Watertown flights

How much is a round-trip flight from London Heathrow Airport to Watertown?

Which airline is the cheapest to fly from London Heathrow Airport to Watertown?

What is the cheapest layover airport when flying from London Heathrow Airport to Watertown?

When flying from London Heathrow Airport to Watertown which airport offers the shortest layover?

Key details for London Heathrow Airport to Watertown flights

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When to book flights from London to Watertown

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Your guide to booking London Heathrow Airport to Watertown flights

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