Austin-Bergstrom South Terminal to close at end of March

March 4, 2026

Austin-Bergstrom International Airport has announced the planned closure of its South Terminal, with operations ending at the close of March. The airport made the notice public to inform travelers and airline partners of the upcoming change.

The South Terminal currently houses flights operated by Allegiant Air and Frontier Airlines. Passengers booked on those carriers will be affected by the terminal’s closing and should monitor their airline communications for any updates about check-in and boarding locations.

Airport leadership did not release a detailed timeline for transitional operations in the announcement, but they stated the closure will take effect at the end of March. Officials encouraged travelers to confirm their flight status and terminal assignments directly with their airlines prior to heading to the airport.

The South Terminal has served budget carriers that offer nonhub flights to and from Austin, providing a separate check-in and boarding area from the main terminal. Its closure may require logistical adjustments for airline staff and travelers alike, including where baggage drop and security screening take place.

Representatives for Allegiant Air and Frontier Airlines were identified as the carriers using the facility, and passengers are advised to consult airline notifications for specific instructions. Travelers can also check Austin-Bergstrom International Airport’s website or contact customer service for general airport information and guidance.

Airport officials said the announcement was intended to give passengers time to prepare for the change and avoid last-minute confusion. As the closure date approaches, travelers flying with Allegiant or Frontier should verify terminal and gate assignments, and allow extra time for check-in and security processing if needed.