Southwest Airlines Co. have partnered to offer travelers around the globe single-ticket journeys to and from the United States, connecting to places where Southwest and Singapore Airlines fly. Southwest Executives shared the news of the interline partnership during the International Air Transport Association (IATA) Annual General Meeting in Brazil.

The SIA Group, which includes Singapore Airlines and Scoot, operates service to more than 130 destinations in 35 countries and territories, and flies between its global hub, Singapore Changi Airport and three airports in the United States served by Southwest—Los Angeles (LAX), Seattle/Tacoma (SEA), and San Francisco (SFO). In those shared gateway airports, international travelers can now seamlessly connect to nearly 120 airports in the Southwest network. Tickets are available through Singapore Airlines, travel agents, and travel websites.

With assigned seating, optional Extra Legroom (1) and enhanced boarding all introduced earlier this year, Southwest continues to invest purposefully in onboard experiences with feedback-driven enhancements toward greater comfort and more choice. These thoughtful improvements aim to showcase Hospitality for which the People of Southwest Airlines are world famous.

Southwest Airlines has initiated service at five airports in 2026 including St. Thomas, in the U.S. Virgin Islands, Sint Maarten, Santa Rosa/Sonoma County, Calif., Knoxville, Tenn., and Anchorage.

Including Singapore Airlines, Southwest now has eight active partnerships with overseas carriers connecting travel between its network and places across the globe in Asia, Europe, the Middle East, and Africa.

1. Customers in Extra Legroom seats will be offered a premium snack (on flights traveling 301 miles or more) and complimentary premium drinks (on flights traveling 251 miles or more). Service may be modified or limited at Southwest's discretion. Must be 21 or older to consume alcoholic beverages. Alcohol served onboard must be consumed onboard the aircraft.
2. Based on U.S. Dept. of Transportation quarterly Airline Origin & Destination Survey as of Q4 2025
3. Fulltime-equivalent active Employees as of March 31, 2026