Last updated: 31 October 2026.
Southwest is not a member of a global airline alliance. It works with a small set of partner airlines on connecting itineraries. On a partner itinerary, the partner's rules apply for baggage, refunds and no-shows.
0alliances: Southwest is not in a global alliance
6interline partners listed in its annual report
2025year the Icelandair partnership launched
2027spring when more redemption options are planned
Partners
- Interline partners named in the airline's annual report: Icelandair, China Airlines, EVA Air, Philippine Airlines, Condor and Turkish Airlines.
- Icelandair, the first international partner, launched in January 2025. Connections to Southwest are available at Baltimore/Washington, Denver, Nashville, Orlando, Pittsburgh and Raleigh-Durham. Rapid Rewards members earn points on Icelandair bookings that include a Southwest-operated segment.
- Southwest plans more redemption options with Icelandair, China Airlines and Etihad Airways from spring 2027.
- For a partner itinerary, use the check-in of the carrier that flies first.
Questions travellers ask us
Is Southwest in an alliance?
No.
Which airlines connect with Southwest?
Icelandair, China Airlines, EVA Air, Philippine Airlines, Condor and Turkish Airlines, among others.
Baggage Allowance is an independent information site and is not part of Southwest Airlines. Check the airline's own pages before you travel.
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