Delta Air Lines and Alaska Airlines will end their partnership. Both companies call this a positive milestone for both airlines as Alaska focuses on its merger integration with Virgin America and Delta focuses on creating more customer choice at its Seattle-Tacoma International Airport hub, where it now operates more than 150 peak-day flights to more than 40 destinations.
So here's what passengers need to know: Effective May 1, 2017, Delta and Alaska will no longer have a codeshare agreement, and sales of flights under DL- and AS-coded flight numbers flown on Alaska and Delta aircraft respectively will cease.
Additionally, customers of each airline will no longer be able to earn and redeem Delta miles or Mileage Plan miles on flights operated by the other carrier. The carriers will retain an interline agreement, allowing them to continue offering customers ticketing and baggage connectivity. Delta and Alaska today codeshare on only a small number of flights as Delta's growth in Seattle has reduced the need for codeshare flying.
Seattle businesses have global travel needs, and Delta customers in Seattle retain a robust selection of flights following the end of the partnership. Delta has built a strong hub at Sea-Tac, having more than tripled flights and destinations since 2013, and has become a reliable and collaborative travel partner, offering unmatched products and services and a team of 3,200 local employees to support Seattleites' travel needs.
Mileage Earning and Redemption
Delta SkyMiles Members will be able to earn and redeem miles on flights operated by Alaska Airlines through April 30, 2017. SkyMiles Medallion Members will continue to receive their benefits when flying with Alaska Airlines through April 30, 2017.
Beginning May 1, 2017, SkyMiles Members will not be able to earn and redeem miles on flights operated by Alaska Airlines unless a ticket was purchased before Dec. 19, 2016. Medallion Benefits will not be available on flights operated by Alaska Airlines.