Southwest Airlines announces new routes including first Alaska flights for summer 2026

Adam Decaire, Senior Vice President of Network Planning and Network Operations Control at Southwest Airlines, stated: "We're boosting service in locations where we've always had a strong presence to offer customers even more service than ever before in those cities."

From Las Vegas, Southwest will increase frequencies on eight routes including Nashville, Burbank, Indianapolis, Kansas City, Orlando, New Orleans, Reno, and Tampa.

With Terminal 1 now open at San Diego International Airport (SAN), Southwest is planning more than 134 flights on peak days during summer 2026. The airline will serve 43 destinations from San Diego. New routes include a flight to Boston Logan International Airport launching June 4. Additionally, intra-state service between San Diego and San Francisco International Airport (SFO) will increase to eight times daily on peak days.

Between March 2024 and February 2025, Southwest was the largest operator at SAN with over 7.8 million available seats and a market share of approximately 32%, nearly three times greater than United Airlines' share.

Other new or increased services from San Diego include routes to Kahului (starting March 5), Puerto Vallarta (March 5), Santa Rosa (April 7), Seattle/Tacoma (March 5), Bozeman (seasonal from March 7), Eugene (seasonal from November 22), Omaha (seasonal from November 22), and Spokane (seasonal from March 7).

At Orlando International Airport (MCO), Southwest has added capacity on eleven routes serving both domestic and international destinations such as Austin, Nashville, Baltimore, Indianapolis, Kansas City, Milwaukee, Pittsburgh, Louisville, and San Juan in Puerto Rico.

A new daily flight between Austin Bergstrom International Airport (AUS) and Seattle/Tacoma will begin June 4. Flights between Austin and Indianapolis will operate up to three times daily during summer. Service between Austin and San Francisco will increase to twice daily during weekdays.

Decaire said: "We're boosting service in locations where we've always had a strong presence to offer customers even more service than ever before in those cities."