Casper–Natrona County International Airport is 7 miles northwest of Casper, in Natrona County, Wyoming. Before December 19, 2007, the airport was called Natrona County International Airport. Scheduled passenger service is offered by SkyWest Airlines operating as Delta Connection on behalf of Delta Air Lines. Skywest Airlines, as well as CommutAir, operate as United Express on behalf of United Airlines as well. These regional airlines operate regional jet aircraft into Casper.