Port Alsworth Airport (IATA: PTA, ICAO: PALJ, FAA LID: TPO) is a private-use airport serving Port Alsworth which is located in the Lake and Peninsula Borough of the U.S. state of Alaska.

[2] Although many U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned TPO by the FAA and PTA by the IATA.

[3] Port Alsworth Airport has one runway designated 6L/24R with a dirt and gravel surface measuring 3,000 by 100 feet (914 x 30 m).

For the 12-month period ending September 5, 1984, the airport had 1,300 aircraft operations, an average of 108 per month: 81% air taxi and 19% general aviation.

[1] It directly neighbors Wilder/Natwick Airport (ICAO: PAKX, FAA LID: 05K) which operates runway 6R/24L.