Grant County International Airport

The Grant County International Airport boasts one of the largest airfields in the United States and is capable of accepting the largest aircraft in the world. The airport enjoys 350 days of excellent VFR weather and is regularly utilized by commercial and military flights. It has capacity to accommodate increased traffic given the five runways and onsite FAA control tower for commercial, military, and general aviation use. In addition, the facility is favored by commercial and military flight test programs. Future plans include opportunities to build hangars at the airport as part of the SW Hangar Development area.

Airfield Airspace & Access

The FAA tower and radar facility controllers diligently control the airspace over and around the airport, safely and creatively ensuring all users can complete 100% of their missions. It is not uncommon for them to be controlling three independent traffic patterns simultaneously while approving a simulated rejected take-off or a UAV flight. Their professionalism shows in how they serve our mutual customers; they treat the student pilot and the senior flight test pilot with the same courtesy and attention to detail. Come see and hear for yourself!

  • Grant County International Airport is an FAA Part 139 certificated airport
  • FAA airport identifier is MWH, international identifier is KMWH
  • 350 days of good flying weather; “Visual Flight Rules” or “VFR” in aviation parlance
  • Class D Airspace, five-mile radius up to 2,500 feet Above Ground Level (AGL)
  • Terminal Radar Approach Control (TRACON) controls 40 miles out and up to 10,000 feet
  • Multiple instrument approaches, including an Instrument Landing System (ILS) and GPS
  • Automated Surface Observation System (ASOS) for precise weather reports: (509) 762-5082
  • Terminal Aerodrome Forecasts (TAFs) for flight planning
  • 24/7 Aircraft Rescue Fire Fighting (ARFF) station, operating at ARFF Index D. Index E service available upon advanced request.

Grant County International Airport offers a fully secured, 3,500-acre airfield. A background check and specific training is required before access credentials are issued. The airport has 24-hour support onsite.

Military Operations

The Port of Moses Lake welcomes military exercises throughout the year at the Grant County International Airport. The large airfield, surrounded by open terrain, make for excellent scenario-based training. Radar-controlled airspace abuts expansive Military Operations Areas (MOA) to the north for aircraft participating in multilateral mission simulations. It is not uncommon to see the USAF and US Navy sharing the traffic pattern, sometimes with an international visitor. The US Army drops in and sweep through the terminal and other port buildings made available for their use; the USMC has set up a forward refueling base in minutes to “defend” the coastline. We even see the Coast Guard on occasion!

Airport Business

Fixed Base Operations
Columbia Pacific Aviation

Columbia Pacific Aviation is equipped to provide aircraft maintenance, fueling and defueling, deicing, flight test support and air cargo facilities. CPA has over 15,000 square feet of cold storage to support perishable cargo prior to shipping. CPA also offers flight training and aircraft rental as well.

CPA has over 15,000 square feet of cold storage to support perishable cargo prior to shipping.
Million Air

Million Air supplies Jet-A fuel for commercial, military and 
general aviation (GA) aircraft. Million Air provides a full range 
of ground support services including flight test support, 
deicing, lav, catering, and rental cars.

Maintenance, Repair & Overhaul (MRO)

AeroTEC provides MRO services to a range of aircraft types in addition to their robust testing, engineering and certification services.

Aviation Technical Services

Aviation Technical Services provides daily airframe and VIP support in partnership with Greenpoint Technologies while also capable of providing a wide range of services to airlines and other commercial aircraft owners.

Greenpoint Technologies, Inc.

Greenpoint Technologies provides incredible interiors to large business jets, covering all facets of aircraft completion including design, engineering, manufacturing, and installation.

U.S. Customs Office

The United States Customs and Border Protection office, located within the Grant County International Airport terminal, is open 8:00am to 5:00pm Monday through Friday to clear arriving international flights. Call-outs may be possible upon request. Please contact them in advance for details and updates. 

For additional information or to schedule appointments:

U.S. Customs and Border Protection
7810 Andrews St N.E.
Moses Lake, WA 98837

Aerial Firefighting

The Port is proud to host and support aerial firefighting agencies and their contractors, both in the line of duty and testing and certification of new equipment and new aircraft models.

United States Forest Service (USFS) Moses Lake Tanker Base

The United States Forest Service (USFS) Moses Lake Tanker Base, located in the southeast quadrant of the airport, is the only airport in Washington State capable of receiving and launching Very Large Air Tankers (VLATs) and protects federal lands from the Cascades to the Rockies and from British Columbia to Eastern Oregon.

Washington State Department of Natural Resources (DNR)

The Washington State Department of Natural Resources (DNR) has found the airport to be ideal central location for protecting the state, with room to park multiple aircraft types for mission-specific requirement and success.

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For more information about the airport, please contact:

Rich Mueller
Airport Director

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