Alaska Air Group, Inc. EXHIBIT 11 Computation of Earnings Per Common Share (In thousands, except per share) Three Months Ended Nine Months Ended September 30, September 30, 1996 1995 1996 1995 PRIMARY - Net income $32,816 $27,352 $43,611 $18,033 Average number of shares outstanding 14,467 13,509 14,165 13,440 Assumed exercise of stock options reduced by the number of shares purchased with the proceeds from exercise of such options 121 66 110 10 Average shares as adjusted 14,588 13,575 14,275 13,450 Primary earnings per common share $2.25 $2.01 $3.06 $1.34 FULLY DILUTED - Net income $32,816 $27,352 $43,611 $18,033 After tax interest on convertible debt 2,038 2,580 6,070 6,868 Income applicable to common shares $34,854 $29,932 $49,681 $24,901 Average number of shares outstanding 14,467 13,509 14,165 13,440 Assumed exercise of stock options 121 66 110 10 Assumed conversion of 6.5% debentures 6,151 6,151 6,151 2,141 Assumed conversion of 7.75% debentures 381 446 381 487 Assumed conversion of 6.875% debentures 1,608 1,608 1,608 1,608 Assumed conversion of 7.25% notes 0 1,254 0 2,745 Average shares as adjusted 22,728 23,034 22,415 20,431 Fully diluted earnings per common share $1.53 $1.30 $2.22 $1.22