Southwest Washington Regional (KKLS), Washington
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Southwest Washington Regional Airport (KKLS) serves the Kelso, Washington area with a single paved runway suited to light and medium business aviation traffic. The non-towered field operates on a published attendance schedule and relies on CTAF for runway lighting activation. Customs clearance is not available on site, with the nearest customs-equipped airport, Portland International (KPDX), roughly 34 nautical miles to the south. The airport sits within reach of several regional neighbors, including Portland International and Chehalis-Centralia, giving it a role as a secondary option in the Willamette Valley and southwest Washington corridor.
Runways
Southwest Washington Regional has one paved runway, 12/30, 4,391 ft long and 100 ft wide, with an asphalt surface.
Runway geometry from published threshold coordinates. Not for navigation.
Source: FAA Form 5010.
Fuel and airfield services
Southwest Washington Regional has Jet A and 100LL available on the field. Fueling is available from 8am to 5pm, daily, and the airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
Southwest Washington Regional does not clear customs. The nearest port of entry is Portland International (KPDX), 34 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Southwest Washington Regional recorded 499 business aviation movements in 2025. Traffic peaks in August. Business aviation traffic at KKLS is somewhat concentrated in the late summer months, with May, July, August, and September showing the highest monthly operations counts.
Business jet movements, FAA TFMSC count. Peak month August, 57 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Southwest Washington Regional averages 3.5 days above 90°F in July and 9.9 freeze days in January. August is the warmest month, with average highs of 80.4°F, and December the coldest, at 46.6°F.
Weather station is 2.1 NM from the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Southwest Washington Regional has published operating constraints in three categories: runway notes, environmental and other notes.
REIL for runways 12 and 30, PAPI for runways 12 and 30, and MIRL for runway 12/30 are activated via CTAF.
Runway 12/30 MIRL lighting uses non-standard spacing.
A hill obstruction rising 3 feet above the surrounding terrain extends from 40 feet to 200 feet, located 105 feet left of the runway.
Flocks of birds have been reported on and in the vicinity of the airport.
24-hour self-service credit card fuel is available for 100LL. After hours, Jet-A service is available by call-out.
Field condition NOTAMs are not available Monday through Friday from 1700 to 0800.
For clearance delivery, if unable to contact on the FSS frequency, contact Seattle ARTCC.
Source: FAA Chart Supplement.
Nearby airfields
Southwest Washington Regional has five airfields within 35 NM. The closest is Scappoose (KSPB), 20.89 NM south.
Part of the Portland, Oregon area.
Source: Skystar calculation from official coordinates.
Skystar at KKLS
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.
$1,200.00 catering order at KKLS.
Unchanged.
What the kitchen invoices us is what your quote reads.
One line, fixed.
It does not move with the size of the order.
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 KKLS?
Southwest Washington Regional (KKLS) offers self-service 100LL fuel on a 24-hour credit card basis. Jet-A is also listed as available, though after-hours Jet-A service requires a call-out rather than direct self-service access. Attendance at the field runs 0800-1700 daily. Pilots needing Jet-A outside those hours should plan for the call-out arrangement.
Does KKLS have customs clearance on site?
Southwest Washington Regional Airport does not have customs service on site. The nearest customs facility is at Portland International (KPDX), located about 34 nautical miles away. Flights requiring customs clearance should plan to route through KPDX rather than KKLS. This distance should be factored into any international arrival planning.
What runway does Southwest Washington Regional Airport have?
KKLS has a single paved runway, 12/30, measuring 4,391 feet long and 100 feet wide with an asphalt surface. The runway is equipped with REIL and PAPI lights on both ends, plus MIRL lighting, all activated via CTAF since the field is non-towered. The MIRL system uses non-standard spacing, which pilots should note during approach and landing planning.
How busy is business aviation traffic at KKLS?
Business aviation traffic at Southwest Washington Regional (KKLS) totaled 499 operations in 2025 out of 932 annual operations overall, according to FAA TFMSC data. This places the airport in a moderate traffic tier. Monthly volumes vary, with activity generally higher in late summer months compared to the rest of the year. Dispatchers should expect this as a lower-volume general aviation and business aviation field.