S40 — Prosser Airport, WA

Non-ToweredProsser, WA • ICAO: KS40 • 697' MSL

S40 WeatherLive METAR & TAF

Wind Component

S40 has 1 runway. The longest is 7/25 at 3,450 ft × 60 ft (asphalt).

7/25Lighted3,450 ft × 60 ftAsphalt

FAA NASR data, cycle 2026-09-03

S40 field elevation is 697 ft MSL. The published traffic pattern altitude at S40 is 1,500 ft MSL (800 ft AGL). Fuel available at S40: 100LL.

Field elevation697 ft MSL

Pattern altitude1,500 ft MSL800 ft AGL · published

Fuel100LLAvailability — call for price

Control towerNon-towered

FAA NASR data, cycle 2026-09-03

CTAF 122.8 MHz — S40 is non-towered; self-announce position and intentions on CTAF.

CTAF122.8

UNICOM122.8

Radio122.5

Check KS40 against your personal minimums, plan a route to it, and see the best runway for the current wind — free.

No, S40 is a non-towered airport. The CTAF frequency is 122.8 MHz.

S40 has 1 runway (7/25). The longest runway is 3,450 feet.

S40 publishes a traffic pattern altitude of 800 feet AGL — about 1,500 feet MSL — which is not the standard 1,000 feet.

Yes. S40 (Prosser Airport) has 100LL available. Call the field for hours, self-serve availability and price.

S40 (Prosser Airport) has a field elevation of 697 feet MSL.

S40 (Prosser Airport) is located in Prosser, WA.