Southwest Airlines and Singapore Airlines have launched a partnership allowing passengers to book single-ticket trips connecting Singapore Airlines’ long-haul network with Southwest’s US flights.
The agreement gives Singapore Airlines passengers access to nearly 120 Southwest destinations through Los Angeles International Airport (LAX), Seattle-Tacoma International Airport (SEA) and San Francisco International Airport (SFO).
The airlines announced the partnership during the International Air Transport Association (IATA) Annual General Meeting in Rio de Janeiro, Brazil.
Passengers can book combined Singapore Airlines and Southwest itineraries through Singapore Airlines, travel agents and travel websites.
Singapore Airlines serves Los Angeles, Seattle and San Francisco from its Singapore Changi Airport (SIN) hub. All three airports are also served by Southwest.
“Singapore Airlines becomes the eighth carrier in our partnership portfolio exemplified by its quality and reach,” said Andrew Watterson, Southwest Airlines Chief Operating Officer. “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.”
The partnership expands Southwest’s international reach into its domestic network without adding long-haul aircraft, marking another step in the airline’s broader shift away from its traditional stand-alone model.
Southwest has introduced assigned seating, optional extra-legroom seats and changes to its boarding process as it works to increase its appeal and compete for more connecting and higher-revenue passengers.
The carrier has also added service to five airports in 2026: St. Thomas in the US Virgin Islands, Sint Maarten, Santa Rosa/Sonoma County in California, Knoxville, Tennessee, and Anchorage, Alaska.
Singapore Airlines and its low-cost subsidiary Scoot serve more than 130 destinations in 35 countries and territories.
