The three nearest airports are Pullman (Alaska Air service to Seattle), Lewiston (Alaska/Horizon to Seattle and Boise; Delta to Salt Lake City) and Spokane (all major carriers).

Lewiston is approximately 45 minutes by car from Pullman, and Spokane is 75 minutes.

There is a shuttle service between Spokane airport and Pullman, details here.

Further information on travel to WSU can be found here