Summary Southwest Airlines is adding six new routes to popular spring break destinations in March 2025. The airline is discontinuing five existing routes, including flights to West Palm Beach and New Orleans. Southwest is shifting to assigned seating and introducing red-eye flights for the first time in its 53-year history.

Southwest Airlines has been changing its route network and operational model. The latest change is the introduction of six brand-new routes. However, it is also canceling another five existing routes.

The schedule extends through April 7th next year in a bid to cover the spring break travel period, which is one of the busiest and most lucrative periods for airlines in the US. Out with the old and in with the new According to The Points Guy , the new routes are all popular spring break destinations and will be introduced in March 2025, just in time for travelers to book holiday flights. The new routes Southwest Airlines is introducing in chronological order are: March 6th: Austin-Bergstrom International Airport (AUS) to Milwaukee Mitchell International Airport (MKE).

Austin-Bergstrom International Airport (AUS) to Reno-Tahoe International Airport (RNO). Nashville International Airport (BNA) to Indianapolis International Airport (IND). Sacramento International Airport (SMF) to Tucson International Airport (TUS).

The flights from AUS to MKE will operate on weekdays, and the flights to RNO will operate on weekends. March 8th: Nashville International Airport (B.