Watertown International Airport
Watertown, United StatesART / KART
Regional airport · 1 direct destinations · 2 runways · longest runway 7,001 ft
61 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Watertown → Philadelphia
ART
WatertownWatertown International Airport
WatertownWatertown International AirportPHLPhiladelphiaPhiladelphia International Airport
PhiladelphiaPhiladelphia International Airport- Distance
- 288 mi
- Estimated flight time
- ~1h 5m
Same local time in Watertown and Philadelphia.
Observed nonstop
How often does this route fly?
Frequency
Daily at most
On average around 1.25 flights a day, observed from October 2025 to September 2026.
- 1.3
- flights per day
- 2
- busiest month · Oct
- 1
- quietest month · Nov
- 53 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 1Jan2026
- 1.5Feb
- 1Mar
- 1Apr
- 2May
- 2Jun
- 2Jul
- 1Aug
- 1Sep
- 2Oct2025
- 1Nov
- 2Dec
In December 2025, January 2026 we saw less traffic at Watertown in general than usual; compare that month with care.
Airlines
Who flies it
Piedmont Airlinesall year
Through the day
Departure times
Local time in Watertown. Most departures between 06:00 and 09:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 0.9Mon
- 0.8Tue
- 1Wed
- 1.1Thu
- 1Fri
- 1Sat
- 1.2Sun
Fleet
Aircraft observed
- Embraer ERJ 145E145101%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1 | 24 |
|
| February 2026 | 1.5 | 27 |
|
| March 2026 | 1 | 31 |
|
| April 2026 | 1 | 24 |
|
| May 2026 | 2 | 33 |
|
| June 2026 | 2 | 36 |
|
| July 2026 | 2 | 37 |
|
| August 2026 | 1 | 33 |
|
| September 2026 | 1 | 31 |
|
| October 2025 | 2 | 33 |
|
| November 2025 | 1 | 33 |
|
| December 2025 | 2 | 20 |
|
Airlines observed on this route
From observed callsign routes on ART-PHL - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Watertown: 1.
- Direct destinations observed from Philadelphia: 139.
The airports on this route
Philadelphia International Airport
Philadelphia, United StatesPHL / KPHL
Major airport · 139 direct destinations · 4 runways · longest runway 12,001 ft
70 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Watertown to Philadelphia
The observed direct connection between Watertown International Airport (ART) and Philadelphia International Airport (PHL) covers approximately 288 mi. The estimated flight time is around 1h 5m. Piedmont Airlines has been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Watertown from Philadelphia by air?
- The great-circle distance between Watertown International Airport and Philadelphia International Airport is approximately 288 mi.
- How long is the flight from Watertown to Philadelphia?
- Based on the distance, the estimated flight time is about 1h 5m. This is an estimate, not a schedule.
- Is there a direct connection from Watertown to Philadelphia?
- Yes, a direct connection between ART and PHL has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Piedmont Airlines.
- How often is there a flight from Watertown to Philadelphia?
- On average around 1.25 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 362 observed flights. Mainly Piedmont Airlines. That is an observation, not a timetable.
- What is the current time difference between Watertown and Philadelphia?
- Same local time in Watertown and Philadelphia.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.