X0306 4 2017-12-08 false 0000766421 ALASKA AIR GROUP, INC. ALK 0001188835 TILDEN BRADLEY D 19300 INTERNATIONAL BLVD SEATTLE WA 98188 false true false false CHAIRMAN, PRESIDENT AND CEO COMMON STOCK 401(K) 15473 I ESOP TRUST COMMON STOCK 18405 I GRAT COMMON STOCK 2017-12-08 5 G false 21400 0 D 116546 D COMMON STOCK 2018-02-10 4 F false 2220 64.72 D 114326 D COMMON SHARES HELD IN THE ALASKA AIR GROUP INC. EMPLOYEE STOCK OWNERSHIP 401(K) PLAN TRUST, AS OF 12/31/17. TOTAL HELD IN COLUMN 5 INCLUDES 6,300 UNVESTED RESTRICTED STOCK UNITS GRANTED ON 2/9/2016 UNDER THE ISSUER'S 2008 PERFORMANCE INCENTIVE PLAN. /S/ JEANNE E. GAMMON, ATTORNEY IN FACT FOR BRADLEY D. TILDEN 2018-02-12