Airports in Cowlitz County, Washington
Cowlitz County, Washington occupies a strategic position along the I-5 corridor between the Portland, Oregon metropolitan area to the south and the Seattle-Tacoma metro to the north. With a county seat in Kelso and an estimated population of 115,866 residents as of 2026, Cowlitz County relies on a network of aviation facilities that serve general aviation operators, agricultural pilots, private aircraft owners, and business travelers seeking efficient access to regional and national destinations. The county's primary airport, Southwest Washington Regional Airport, anchors local aviation activity, while proximity to two major international airports ensures that commercial air travel remains accessible to all county residents.
Southwest Washington Regional Airport (KLS)
Southwest Washington Regional Airport, designated by the FAA with the identifier KLS (ICAO: KKLS), stands as the principal aviation facility serving Cowlitz County. Located approximately 2 nautical miles southeast of downtown Kelso, the airport occupies a flat river valley site that has supported aviation operations since its establishment in 1941. Over the decades, KLS has operated under several names — including Kelso-Longview Regional Airport and the historically notable Molt Taylor Field, honoring Molt Taylor, the pioneering Longview-born aviation inventor and designer of the Aerocar — before receiving its current designation as Southwest Washington Regional Airport.
The airport is city-owned and operated, serving both the Kelso and Longview communities, which together form the urban core of Cowlitz County. With approximately 70 based aircraft, KLS supports a diverse fleet of single-engine trainers, multi-engine business aircraft, and experimental homebuilt designs. The field provides essential infrastructure for regional general aviation, including fueling services, aircraft parking, and maintenance access. Pilots operating into KLS benefit from the airport's location near the confluence of the Cowlitz and Columbia Rivers, a landmark-rich environment that makes visual navigation straightforward under VFR conditions.
The airport's runway and taxiway system accommodates a wide range of piston and turboprop aircraft commonly used in the Pacific Northwest. Businesses in Kelso and Longview use KLS for executive transport, aerial survey, agricultural aviation coordination, and time-sensitive cargo movements. The airport also serves search-and-rescue operations coordinated through Cowlitz County emergency management, making it a critical public safety asset for a county that includes both urbanized river valley areas and remote terrain in the Cascade foothills to the east.
Woodland State Airport
Located in the city of Woodland in the southern portion of Cowlitz County, Woodland State Airport provides an additional general aviation facility serving the county's growing southern communities. Situated approximately 21 miles south of Kelso and Longview, Woodland State Airport is a state-owned facility managed under the Washington State Department of Transportation Aviation Division. The airport serves local pilots, agricultural operators working the fields of the lower Cowlitz River valley, and recreational aviators who find its location convenient to the Columbia River corridor. Its presence ensures that residents of Woodland and the surrounding agricultural communities have local access to aviation services without traveling north to KLS.
Access to Major Commercial Airports
Cowlitz County's location midway along the I-5 corridor between two major metropolitan areas provides residents with practical access to full-service commercial aviation. Portland International Airport (PDX), operated by the Port of Portland, lies approximately 48 to 49 miles by road from Kelso — a drive of roughly 50 to 54 minutes under normal traffic conditions, and just 45 miles as the crow flies. PDX serves dozens of nonstop domestic destinations and offers connecting service to international routes across Europe, Asia, and beyond. For Cowlitz County travelers, PDX represents the most convenient commercial gateway, with shorter drive times and competitive airfare options tied to Portland's status as a significant regional hub.
Seattle-Tacoma International Airport (SEA), located north along I-5, sits approximately 115 to 117 miles from Kelso — a drive of roughly two hours under typical conditions. Sea-Tac is one of the busiest airports on the West Coast and offers an extensive network of nonstop flights to domestic and international destinations, including major hubs in Asia and Europe. Cowlitz County business travelers and residents sometimes prefer Sea-Tac for its broader route network, particularly for international itineraries or connections to cities not served nonstop from PDX.
General Aviation Services and Flight Training
Southwest Washington Regional Airport supports the full range of general aviation services expected at a county airport of its size. Fixed-base operators at KLS provide aviation fuel (100LL avgas and Jet-A), aircraft tie-down and hangar rental, and coordination for charter flights. Flight instruction is available through local flight schools that take advantage of the airport's accessible airspace, relatively mild Pacific Northwest weather windows, and proximity to diverse training environments including river valley navigation, mountain avoidance procedures in the Cascades, and coastal airspace coordination.
Charter operators serving KLS provide on-demand air transportation for corporate clients across the Pacific Northwest, offering a faster alternative to driving the I-5 corridor during heavy commuter traffic periods. Agricultural aviation services support the county's farming operations, particularly in the Cowlitz and Columbia River valley lowlands where aerial application of fertilizers and pest control products remains a practical tool for large-acreage producers.
Economic and Transportation Significance
Aviation plays a meaningful role in Cowlitz County's economic infrastructure. The county's position along I-5, with direct rail connections and the Columbia River navigable waterway nearby, makes multimodal logistics a key economic driver. Southwest Washington Regional Airport complements these surface transportation assets by enabling time-sensitive shipments, executive travel, and emergency medical transport that ground transport cannot efficiently accommodate. Local employers in manufacturing, timber processing, and distribution rely on the airport's business aviation capabilities to maintain competitive operations without requiring employees to commute to Portland or Seattle for every flight.
Airport facilities in a county are typically governed by regional airport authorities or county commissions that oversee operations, safety standards, and capital improvements. There are 3 Airports locations in Cowlitz County, Washington.
County residents can use this directory to identify which airports serve their area, whether they need commercial airline service, general aviation access, or cargo shipping connections. Contact the airport administration office directly for permitting, noise complaints, or facility inquiries.
International Airports
An international airport is a vital component of any major metropolitan area. It connects domestic and international travelers, providing them with a means to connect to the rest of the world.
An international airport is a large airport that is equipped to handle both domestic and international flights. It also has a significant economic impact on the local community.
These major Washington Airports generate thousands of jobs and contribute billions of dollars to the local economy through tourism and other related industries.
A large international airport also offers a variety of amenities for travelers. These can include shopping centers, dining options, lounges, and other services such as currency exchange and luggage storage.
Private Airports
Private airports, also known as general aviation airports, are airports that are not open to commercial airlines and are used primarily by private aircraft.
One of the main benefits of a private airport is the exclusivity and privacy it offers.
These airports are often used by high-profile individuals, such as celebrities and business executives, who value their privacy and want to avoid the crowds and security lines of commercial airports.
Private airports also offer more flexibility and convenience for aircraft owners. They can also be used for training pilots and hosting aviation events.
There are 0 Private Airport in Cowlitz County, Washington.
Regional Airports
Regional airports are smaller airports that serve a rural geographic region, such as a smaller city or county with a population of less than 100,000.
Small airports mostly offer flights within the same country, but some may offer flights to nearby countries.
One of the main advantages of regional airports is their convenience. They also tend to have shorter security lines and fewer crowds, making the overall travel experience more enjoyable.
There are 1 Regional Airport in Cowlitz County, Washington.
Sw Regional Airport
Municipal Airports
Municipal airports which are also called "public airports" are owned and run by local governments like cities and counties.
Most of the time, they are smaller airports that serve a certain area and have mostly domestic flights, but some may also have flights to nearby countries.
One of the main advantages of municipal airports is their accessibility. They are often located in or near major cities, making them a convenient option for travelers.
Municipal airports provide a vital link for businesses in the region, allowing them to easily connect to other parts of the country.
There are 0 Municipal Airport in Cowlitz County, Washington.
Local Airports
There are 2 Local Airport in Cowlitz County, Washington.
Walters Arv Ultralight Airport
Kelso Longview Airport - Kls
Residents of Cowlitz County can contact their local airport authority for information about noise abatement programs, land use around airport property, and community engagement meetings. For flight bookings and airline services, visit the airport's official website directly.
You may also find Airports locations in neighboring counties including Lewis, Cowlitz.
Frequently Asked Questions — Airports in Cowlitz County, WA
Frequently Asked Questions
1. How early should I arrive at the airport?
Most of the time, you should get to the airport at least two hours before your domestic flight and at least three hours before your international flight. This will allow you enough time to check in, pass through security, and make your way to your gate.
2. What should I do if my flight is delayed or cancelled?
If your flight is delayed or canceled, you should contact your airline as soon as possible. They will usually tell you what your options are, which could include getting a refund or rebooking on a later flight.
3. What is clear at the airport?
Clear is a TSA pre-check program that speeds up the security screening process for low-risk travelers who have already been approved.
Members of the Clear program are able to use dedicated security lanes where they do not have to remove items such as shoes, laptops, liquids, belts, and light jackets. This process allows for a faster and more convenient screening experience for Clear members.
To become a member of Clear, an individual must provide their biographic information and fingerprints for a background check, and then pay an annual fee.
4. Are masks required in airports?
The TSA will no longer require airport employees or patrons to wear a face covering or face mask inside the airport terminal or on airport-operated ground transportation.
5. Can you bring food through airport security?
Yes, you can bring food through airport security.
Solid foods like sandwiches, fruits, and granola bars, are allowed in your carry-on and checked baggage.
Some liquid and gel-like foods, such as yogurt, jelly, and hummus, are also permitted in your carry-on bag as long as they are in containers that hold 3.4 ounces or less.
6. How much is airport parking?
The cost of airport parking can vary greatly depending on the airport, the length of time you will be parked, and the type of parking spot you choose.
On average, hourly parking rates can range from $1-$4 per hour, while daily rates can range from $8-$30 per day. Long-term parking rates can range from $8-$20 per day.
7. Can I leave the airport during a layover?
Yes, If your layover is long enough, you may be able to leave the airport and explore the destination city. It's also a good idea to check with your airline to see if they offer any tours or other options for passengers with long layovers.
8. Can I sleep in an airport?
Yes, you can sleep in an airport, however, the amenities and comfort levels of sleeping in an airport can vary greatly depending on the airport you are in.
Some airports also offer amenities like sleeping pods, capsule hotels and lounges for passengers who want to rest or sleep before their flight. Some airlines also offer resting rooms or lounges for their premium customers.