Spokane International Airport Coeur d'Alene (SIA) is an airport located in the city of Spokane, Washington. It is situated on the west bank of the Spokane River, just south of downtown Spokane. SIA serves as a hub for Allegiant Air and Horizon Air. The airport is also a base for the Washington Air National Guard's 141st Airlift Wing.

In terms of passenger traffic, SIA handled 1,147,764 passengers in 2017. The airport offers service to a variety of domestic and international destinations, including Seattle-Tacoma International Airport, Los Angeles International Airport, Vancouver International Airport, and Calgary International Airport.