Excursion Inlet Seaplane Base (IATA: EXI, FAA LID: EXI) is a state owned, public use seaplane base located in Excursion Inlet, in the Haines Borough of the U.S. state of Alaska. Scheduled passenger service is subsidized by the U.S. Department of Transportation via the Essential Air Service program.This airport is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation airport.