0000766421
2009-01-01
2009-12-31
0000766421
2009-12-31
0000766421
us-gaap:CommonStockMember
2009-12-31
0000766421
us-gaap:AdditionalPaidInCapitalMember
2009-12-31
0000766421
us-gaap:TreasuryStockMember
2009-12-31
0000766421
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2009-12-31
0000766421
us-gaap:RetainedEarningsMember
2009-12-31
0000766421
2008-12-31
0000766421
2009-06-30
0000766421
2010-09-30
0000766421
us-gaap:CommonStockMember
2010-09-30
0000766421
us-gaap:AdditionalPaidInCapitalMember
2010-09-30
0000766421
us-gaap:TreasuryStockMember
2010-09-30
0000766421
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2010-09-30
0000766421
us-gaap:RetainedEarningsMember
2010-09-30
0000766421
2010-01-01
2010-09-30
0000766421
us-gaap:RetainedEarningsMember
2010-01-01
2010-09-30
0000766421
us-gaap:AccumulatedOtherComprehensiveIncomeMember
2010-01-01
2010-09-30
0000766421
us-gaap:CommonStockMember
2010-01-01
2010-09-30
0000766421
us-gaap:AdditionalPaidInCapitalMember
2010-01-01
2010-09-30
0000766421
us-gaap:TreasuryStockMember
2010-01-01
2010-09-30
0000766421
2009-01-01
2009-09-30
0000766421
2009-09-30
0000766421
2010-07-01
2010-09-30
0000766421
2009-07-01
2009-09-30
iso4217:USD
xbrli:shares
iso4217:USD
xbrli:shares
Q3
No
HTML TO BE ADDED
83600000
77600000
-35000000
-113100000
646600000
521800000
28600000
-13300000
36830000
35681000
36706000
36292000
0
-1200000
0
8800000
0
0
462000000
366300000
false
188400000
0
191600000
3.32
2.46
5.08
2.69
240200000
246200000
719100000
739300000
1067500000
967400000
2873800000
2553700000
1184500000
1155400000
3147000000
3167900000
Yes
31200000
23800000
153900000
347300000
40700000
38800000
121400000
116700000
10-Q
653000000
HTML TO BE ADDED
164200000
283100000
129200000
170000000
35898000
35275000
35755000
35981000
36790005
35843092
1
1
174400000
215500000
39900000
66200000
Yes
0000766421
HTML TO BE ADDED
931000
-4900000
-8900000
-242400000
174800000
29100000
3600000
796700000
767800000
5000000
5000000
538600000
474500000
129800000
120300000
--12-31
ALASKA AIR GROUP INC
2300000
-800000
4100000
-6300000
216400000
159800000
352300000
214600000
1073500000
872100000
35800000
36800000
767000000
805700000
-5700000
-32400000
-240000000
-237900000
315000000
501300000
50800000
63300000
HTML TO BE ADDED
HTML TO BE ADDED
8900000
35591000
35949000
-9000000
200000
1317700000
1192100000
100000
0
100000
-748000
-31200000
4700000
5100000
506400000
305400000
7600000
8300000
22700000
24400000
33900000
38300000
106300000
115400000
23000000
24000000
62500000
52200000
805700000
767000000
132600000
148200000
1390100000
1699200000
HTML TO BE ADDED
-23800000
16300000
55300000
49700000
166100000
169000000
152200000
155400000
624100000
631300000
3804600000
3660100000
1768300000
1634300000
HTML TO BE ADDED
HTML TO BE ADDED
231300000
226800000
3.41
2.48
5.21
2.71
-18200000
-17000000
-49900000
-53700000
0
0
1188500000
1027900000
2010-09-30
HTML TO BE ADDED
-5800000
-299000000
-593300000
10600000
10200000
10600000
851100000
807600000
2521500000
2339100000
29400000
27700000
80500000
72300000
973500000
884800000
2603400000
2326100000
36800000
35800000
HTML TO BE ADDED
HTML TO BE ADDED
900000
28100000
29000000
159000
95700000
24400000
-1400000
-1400000
-4700000
-6000000
9800000
0
13200000
0
15600000
12700000
42200000
36700000
59800000
57300000
173600000
165900000
220900000
199500000
683200000
485600000
64600000
54900000
189900000
155300000
147700000
143200000
2010
0
15500000
29500000
25900000
81400000
77800000
100000000
100000000
1
1
501300000
315000000
32400000
5700000
34600000
54000000
4603100000
4506900000
-14900000
-14900000
16000
0
230000000
-20600000
-25100000
122400000
87600000
186300000
97500000
186300000
198200000
142800000
302400000
160900000
840922
252084
0
0
403400000
421000000
57100000
50800000
99700000
98100000
HTML TO BE ADDED
-24000000
-27200000
0
0
0
35800000
49800000
49700000
145800000
154100000
233800000
156000000
5120100000
4996200000
139600000
111800000
-31200000
4500000
4500000
-3900000
-5600000
-109300000
-295000000
13200000
8800000
57800000
55600000
172000000
162300000
44300000
37000000
116100000
97300000
5120100000
4996200000
1456100000
1339000000
41600000
45800000
Large Accelerated Filer
0
HTML TO BE ADDED
10500000
10500000
6500000
6500000
16000000
-300000
5100000
75800000
55200000
116100000
63400000
-237900000
-240000000
396800000
435100000
251700000
151100000
1472000000
1269500000