Prosser Airport (S40), Washington
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Prosser Airport (S40) is a small public-use, unattended field in Prosser, Washington, served by a single asphalt runway. Business aviation traffic here is light, and the nearest customs facility lies roughly 34 nautical miles away.
Runways
Prosser Airport has one paved runway, 08/26, 3,452 ft long and 61 ft wide, with an asphalt surface.
Source: FAA Form 5010.
Fuel and airfield services
Prosser Airport has 100LL available on the field. The airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
Prosser Airport does not clear customs. The nearest port of entry is WA24, 34 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Prosser Airport recorded 103 business aviation movements in 2025. Traffic peaks in March. Business aviation traffic at S40 is heaviest in March, with smaller peaks in June and December, according to FAA TFMSC data.
Business jet movements, FAA TFMSC count. Peak month March, 19 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Weather station is on the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Prosser Airport has published operating constraints in three categories: access, runway notes and other notes.
For clearance delivery, contact Spokane Approach; when Approach is closed, contact Seattle ARTCC.
REIL for runways 08 and 26, and MIRL for runway 08/26, are pilot-activated on CTAF.
Taxiways are marked for night operations with retro-reflective devices.
Airfield conditions are unmonitored.
Source: FAA Chart Supplement.
Nearby airfields
Prosser Airport has five airfields within 33 NM. The closest is Sunnyside Municipal, 9.96 NM northwest.
Part of the Eastern Washington and Oregon area.
Source: Skystar calculation from official coordinates.
Skystar at S40
We arrange catering, fuel and trip support here. Supplier prices reach you unchanged; our coordination fee sits on its own line.
The same order, priced two ways.
$600.00 catering order at S40.
Unchanged.
What the kitchen invoices us is what your quote reads.
One line, fixed.
The $75 minimum applies below $862.50.
At cost.
Passed on at the exact amount the processor took.
Market practice figures are industry averages, not a specific competitor.
Frequently asked questions
Is fuel available at Prosser Airport (S40)?
Prosser Airport, local identifier S40, stocks 100LL only and has no Jet A. The field is unattended, so pilots should plan fuel needs in advance and confirm self-service arrangements before arrival.
Is S40 a towered airport?
S40 is non-towered and unattended, with traffic handled on CTAF. Runway lighting for 08/26, including REIL and MIRL, is pilot-activated on CTAF rather than controlled by a tower.
How long is the runway at Prosser Airport?
Prosser Airport has a single paved runway, 08/26, measuring 3452 feet by 61 feet with an asphalt surface. This is the only runway serving the field, which sits at 706 feet elevation.