Anacortes Airport (IATA: OTS, FAA LID: 74S) is a public use airport located two nautical miles (3.7 km) west of the central business district of Anacortes, a city in Skagit County, Washington, United States. It is owned by the Port of Anacortes.

Many U.S. airports use the same three-letter location identifier for the FAA and IATA. However, this airport is assigned 74S by the FAA but has been assigned OTS from the IATA.

It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a local general aviation facility.