Southwest Airlines begins interline partnership with Singapore Airlines

Southwest Airlines and Singapore Airlines have launched an interline partnership that allows passengers to book single-ticket itineraries across the two carriers’ networks. The agreement was announced in Rio de Janeiro during the IATA Annual General Meeting and adds a new routeing option between Singapore Airlines’ long-haul services and Southwest’s domestic US network.

The partnership links Singapore Airlines’ network of more than 130 destinations in 35 countries and territories with nearly 120 Southwest destinations in the United States. Shared US gateways are Los Angeles, Seattle/Tacoma and San Francisco, and tickets for combined itineraries are available through Singapore Airlines, travel agents and travel websites.

Southwest said Singapore Airlines is its eighth overseas partner, extending the US carrier’s international reach through interline connections rather than its own long-haul flying. The release did not provide fare details, baggage through-check rules or a full timetable beyond immediate ticket availability.