Klamath Falls Airport, located in Klamath Falls, Oregon, is a public airport owned and operated by the Klamath Falls Airport District. It is the only airport in Klamath County, Oregon and serves as a gateway to the region. The airport is commonly referred to as Kingsley Field, named after Major Merritt Albert Kingsley, a Klamath Falls native who was the first Klamath County soldier to die in action during World War I.

The airport was first established in 1933 as a municipal airport. The airport was built with the help of the Works Progress Administration, a federal agency created to provide relief during the Great Depression. The airport was initially served by the Great Northern Railway, which provided daily passenger service from the airport to Portland, Oregon. During World War II, the airport was used as a training facility for the United States Army Air Corps. After the war, the airport was expanded and modernized in order to meet the needs of the growing city of Klamath Falls.

The airport's three-letter code, LMT, stands for "Lake Merritt Terminal", which is the name of the terminal building located at the airport. The terminal building was named in honor of Major Kingsley and is the main entrance to the airport.

Klamath Falls Airport currently serves approximately 20 flights daily to major cities in the United States, including Los Angeles, Denver, Seattle, and San Francisco. The airport is served by Alaska Airlines, Delta Air Lines, United Airlines, and Horizon Air. The airport is also served by charter services, private aircraft, and military flights.

Klamath Falls Airport is a vital part of the local economy and community, providing jobs and connecting the region to the rest of the world. The airport is also a popular destination for recreational activities such as skydiving, hang gliding, and sightseeing.