- Arcata airport, officially known as Arcata-Eureka Airport, is a public airport located in McKinleyville, California, United States. It serves the cities of Arcata and Eureka, as well as other communities in Humboldt County. The airport is operated by the Humboldt County Department of Transportation. It has a single runway and offers both passenger and cargo services. Various airlines provide flights to and from Arcata airport, including United Airlines and Alaska Airlines. The airport also serves as a hub for private and recreational aircraft.