Southwest Airlines and Singapore Airlines (SIA) have partnered to offer travellers around the globe single-ticket journeys to and from the United States, connecting to places where Southwest and Singapore Airlines fly.
An interline partnership is an arrangement that lets travellers book flights on two or more airlines on a single ticket instead of booking each leg of the trip separately. They just have to check in once for all the flights on the itinerary, while their baggage is transferred through to the final destination without them having to collect and check in at connection points.
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 travellers can now seamlessly connect to nearly 120 airports in the Southwest network. Tickets are available through Singapore Airlines, travel agents, and travel websites.
“Singapore Airlines becomes the eighth carrier in our partnership portfolio exemplified by its quality and reach. These carriers are facilitating access to our network for a growing global audience drawn to our improved onboard product and increasingly choosing to fly with us,” said Andrew Watterson, Southwest Airlines Chief Operating Officer.
Southwest Airlines has also 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.
Launched in 2025, Southwest’s international partnership programme now has eight active partnerships with overseas carriers – Icelandair, Taiwan’s China Airlines, & EVA Air, Philippine Airlines, Condor Airlines, Turkish Airlines, All Nippon Airways and now Singapore Airlines – connecting travel between its network and places across the globe in Asia, Europe, the Middle East, and Africa.
Photo: Facebook/Southwest Airlines
