Bozeman Yellowstone International Airport's main terminal is where Frontier Airlines is based (BZN). Travelers on Frontier flights will  Frontier Airlines BZN Terminal  check in at the counters assigned to the airline, which are situated in the main terminal of the airport. Convenient travel is made possible by the airport's many amenities, which include food selections and cozy sitting. Given that BZN is a tiny airport, getting through security and boarding is typically quick and easy. Travelers are guaranteed a seamless experience with to Frontier's well-marked check-in and baggage claim locations. Especially during the busiest travel seasons, make sure you check in early.