The union and American Airlines bargained over a month to decide on the extension.
In August, American scaled back on five other nonstop routes out of Austin-Bergstrom.
The Fort Worth-based air carrier has added new flights and increased capacity looking into 2025.
The new contract, ratified by the Association of Professional Flight Attendants, allows for pay during boarding times.
More than 23% of flights in the U.S. were delayed through the first half of 2024, according to the U.S. DOT.
Delta, United, American and Southwest are all being probed by the U.S. Department of Transportation for their rewards programs.
The Fort Worth-based airline is debuting five new routes to Europe this summer.
The $3 billion in updates to Terminal C are expected to complete by 2030.
The Transportation Security Administration is preparing for the busiest Labor Day weekend on record this year.
Southwest Airlines doesn’t fly out of DFW International Airport, but that could change in the future.