Lopez Island Airport (S31), Washington
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Lopez Island Airport (S31/LPS) is a small public field in the San Juan Islands of Washington state, built around a single paved runway. Traffic here is light and largely seasonal, with business aviation activity making up most of the annual operations recorded.
Runways
Lopez Island Airport has one paved runway, 16/34, 2,905 ft long and 61 ft wide, with an asphalt surface.
Runway geometry from published threshold coordinates. Not for navigation.
Source: FAA Form 5010.
Fuel and airfield services
The airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
Lopez Island Airport does not clear customs. The nearest port of entry is Friday Harbor (KFHR), 4 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Lopez Island Airport recorded 130 business aviation movements in 2025. Traffic peaks in November. Business aviation traffic at Lopez Island is concentrated in November, August, and December, with far fewer operations recorded in the spring months.
Business jet movements, FAA TFMSC count. Peak month November, 26 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
Lopez Island Airport has published operating constraints in three categories: access, runway notes and other notes.
For clearance delivery, contact Whidbey Approach.
Runway 16/34 has soft shoulders and soft thresholds.
The taxiway is marked with reflectors.
Source: FAA Chart Supplement.
Nearby airfields
Lopez Island Airport has five airfields within 22 NM. The closest is Friday Harbor (KFHR), 4.14 NM northwest.
Source: Skystar calculation from official coordinates.
Skystar at S31
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 S31.
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 there customs clearance available at Lopez Island (S31)?
Lopez Island has no onsite customs service. The nearest customs point is Friday Harbor (KFHR), about 4.14 nautical miles away, so aircraft requiring clearance should plan to route through there instead.
What runway does S31 Lopez Island offer for business aircraft?
Lopez Island operates a single paved runway, 16/34, measuring 2,905 feet long and 61 feet wide with an asphalt surface. Pilots should note the soft shoulders and thresholds reported along this runway.
Is Lopez Island Airport staffed or towered?
Lopez Island (S31) is an unattended, non-towered public airport. Clearance delivery for instrument flights is handled through Whidbey Approach rather than an onsite facility.