Austin South Terminal Is Closed as Allegiant and Frontier Move to AUS Main Terminal ([flyaustin.com](https://www.flyaustin.com/south-terminal-aus))

Austin-Bergstrom International Airport’s South Terminal finished operations March 31, and as of April 1, 2026, Allegiant and Frontier flights now use the Barbara Jordan Terminal. For Austin travelers, the biggest change is simple: if you are flying either airline now, go to the main terminal for check-in, security, arrivals and departures. ([flyaustin.com](https://www.flyaustin.com/south-terminal-aus))

That also changes the day-of-travel routine for people doing pickups and drop-offs. Travelers who used to head to the South Terminal site at 10000 Logistics Lane should now plan around the main AUS terminal instead. The airport’s message is that the airlines and flights are continuing, but the terminal assignment has changed. ([flyaustin.com](https://www.flyaustin.com/south-terminal-aus))

What Austin travelers need to know now

If you parked at the South Terminal before it closed and returned to Austin after April 1, AUS says the ABIA parking shuttle between the two terminals is still running until the South Terminal lot is fully emptied. That is a narrow transition detail, but it matters for anyone who left town before the closure and came back to a different terminal than the one where they parked. ([flyaustin.com](https://www.flyaustin.com/south-terminal-aus))

For everyone else, the practical takeaway is to treat Allegiant and Frontier like the rest of the airport’s commercial carriers and build your trip around the Barbara Jordan Terminal. That affects where friends or family should meet arriving passengers, where rideshare and curbside drop-offs should go, and how much extra time to budget if you have old habits tied to the former South Terminal entrance. ([flyaustin.com](https://www.flyaustin.com/south-terminal-aus))

Why AUS closed the South Terminal

According to Austin-Bergstrom International Airport, the closure is tied directly to the Journey With AUS expansion program. The South Terminal facility is being removed so the airport can build the New Midfield Taxiways, which AUS says are needed to improve aircraft movement and support later expansion work. Airport officials and Community Impact both describe the taxiway project as a key enabling step for future projects including the planned Concourse B and its connecting tunnel. ([flyaustin.com](https://www.flyaustin.com/news/south-terminal-closure-marks-new-chapter-aus-expansion))

The airport has also outlined Concourse M as a future temporary six-gate facility on the west side of the airfield, separate from the Barbara Jordan Terminal and accessed by shuttle bus. But that project is not open now: AUS says it remains in design and pre-construction, with construction expected to begin later in 2026 and the airport aiming to open it as early as spring 2028. ([flyaustin.com](https://www.flyaustin.com/news/austin-bergstrom-international-airport-unveils-new-details-about-concourse-m-project))

For Austin passengers, the immediate update is narrower than the long-term expansion plan: if you are flying Allegiant or Frontier this week, go to the Barbara Jordan Terminal, not the old South Terminal site. ([flyaustin.com](https://www.flyaustin.com/south-terminal-aus))

Sources

• AUS South Terminal information page
• AUS news release on South Terminal closure
• AUS Concourse M project announcement
• Community Impact on closure and Concourse M
• AUS South Terminal closure page
• AUS spring travel advisory
• FOX 7 Austin video on South Terminal closure
• Flyaustin