Harry P Williams Memorial Airport
Daylight today(Aug 31, 2026, local time)
About 12h 47m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.
About Harry P Williams Memorial Airport
Harry P. Williams Memorial Airport is a public airport located near the U.S. 90 highway outside of Patterson, Louisiana, United States with the airfield also serving Morgan City, Louisiana. It has two runways, one of them being water for seaplanes.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
Live weather
KPTNNOTAMs
KPTNReference only — not an official briefing. Always obtain a certified briefing (e.g. 1800wxbrief.com / your AIS) before flight.
NOTAM data via the FAA NOTAM system.
Live departures & arrivals
Flight data by AeroDataBox. Times are estimates — not for navigation; confirm with the airline.
Where you can fly from here
Current scheduled routes & daily frequency by AeroDataBox. Approximate — confirm bookable schedules with the airline.
Live traffic nearby
Aircraft currently within ~40 nm, from live ADS-B. Positions are approximately real-time — not for navigation.
Live ADS-B by adsb.lol & the OpenSky Network. Not for navigation.
Map
Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.
Runways (2)
| Runway | Length | Width | Surface | Lighting | Status |
|---|---|---|---|---|---|
| 06 / 24▸ displaced | 5,399 ft / 1,646 m | 150 ft | Asp | Lighted | Open |
| 04W / 22W | 4,500 ft / 1,372 m | 100 ft | Water | Unlit | Open |
Radio frequencies (4)
| Type | Description | Frequency |
|---|---|---|
| A/D | NEW ORLEANS APP/DEP | 124.300 MHz |
| AWOS | AWOS 3 | 134.575 MHz |
| RDO | DE RIDDER RDO | 122.500 MHz |
| UNIC | CTAF/UNICOM | 122.800 MHz |
Instrument procedures & charts
Instrument approaches (3)
Takeoff & alternate minimums (2)
Showing 5 of 5 FAA procedures on this overview. Always fly the current, official chart. Full charts page.
Airspace in this area(1)
| Name | Class | Type | Floor | Ceiling |
|---|---|---|---|---|
| A381 SR-SS DAILY | Special use | Danger | GND | 2000 ft MSL |
Approximate bounding-box match from OpenAIP · all United States airspace. Reference only — consult official charts for exact boundaries and status.
Nearby airports
Great-circle distance and true bearing from Harry P Williams Memorial Airport.
Frequently asked questions
What is the ICAO code for Harry P Williams Memorial Airport?
The ICAO code for Harry P Williams Memorial Airport is KPTN, and its IATA code is PTN.
Where is Harry P Williams Memorial Airport located?
Harry P Williams Memorial Airport is small airport located in Patterson, United States, at an elevation of 9 ft (3 m).
How many runways does Harry P Williams Memorial Airport have?
Harry P Williams Memorial Airport has 2 runways, the longest being 5,399 ft / 1,646 m.
What time zone is Harry P Williams Memorial Airport in?
Harry P Williams Memorial Airport is in the America/Chicago time zone (UTC-05:00).
What is the magnetic variation at Harry P Williams Memorial Airport?
The magnetic variation (declination) at Harry P Williams Memorial Airport is approximately 0.7° W, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near Harry P Williams Memorial Airport?
The nearest airport to Harry P Williams Memorial Airport is Chitimacha Air Park (2LS2), about 14.4 nm to the nw, followed by Le Maire Memorial Airport and Greenwood Plantation Ultralightport.
Is the information on this page suitable for flight planning?
No. Harry P Williams Memorial Airport data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.