MIDLAND - Sunday was a big day in history for the Midland International Airport.
Southwest Airlines is celebrating over three decades of service in the Basin.
The major airline started flying out of Midland exactly 35 years ago on May 20, 1977.
Southwest is even marking the anniversary on their website.
According to the Midland Reporter Telegram, the airline is the main carrier here in Midland/Odessa.
The Midland Reporter Telegram also says Midland was the seventh city to be added to the Southwest flight list.
The airport will be giving away freebies and refreshments to passengers traveling throughout the day on Monday.