Passenger and Ground Handling Revenues (Details)	9 Months Ended
Passenger and Ground Handling Revenues (Details)	Sep. 30, 2014
E175 [Member]
Agreements with other airlines
Number of aircraft delivered	14
Delta Connection Agreements [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Term of agreement	5 years 3 months 18 days
Delta Connection Agreements [Member] \| ExpressJet [Member]
Agreements with other airlines
Term of agreement	4 years 1 month 6 days
Delta Connection Agreements [Member] \| CRJ 200 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	36
Delta Connection Agreements [Member] \| CRJ 200 [Member] \| ExpressJet [Member]
Agreements with other airlines
Number of aircraft under contract	57
Delta Connection Agreements [Member] \| CRJ 700 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	19
Delta Connection Agreements [Member] \| CRJ 700 [Member] \| ExpressJet [Member]
Agreements with other airlines
Number of aircraft under contract	41
Delta Connection Agreements [Member] \| CRJ 900 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	32
Delta Connection Agreements [Member] \| CRJ 900 [Member] \| ExpressJet [Member]
Agreements with other airlines
Number of aircraft under contract	28
United Express Agreements [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Term of agreement	3 years 2 months 12 days
United Express Agreements [Member] \| ExpressJet [Member]
Agreements with other airlines
Term of agreement	3 years 2 months 12 days
United Express Agreements [Member] \| CRJ 200 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	61
United Express Agreements [Member] \| CRJ 200 [Member] \| Atlantic Southeast Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	14
United Express Agreements [Member] \| CRJ 700 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	70
United Express Agreements [Member] \| EMB 120 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	9
United Express Agreements [Member] \| E175 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	14
United Express Agreements [Member] \| ERJ 145 [Member] \| ExpressJet [Member]
Agreements with other airlines
Number of aircraft under contract	234
United Express Agreements [Member] \| ERJ135 \| ExpressJet [Member]
Agreements with other airlines
Number of aircraft under contract	9
Prorate Agreement [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Notice period for termination of agreement	120 days
Prorate Agreement [Member] \| CRJ 200 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	10
Prorate Agreement [Member] \| EMB 120 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	7
United Express Prorate Agreement [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Notice period for termination of agreement	120 days
United Express Prorate Agreement [Member] \| CRJ 200 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	21
United Express Prorate Agreement [Member] \| EMB 120 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	20
Alaska Capacity Purchase Agreement [Member] \| CRJ 700 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	9
US Airways Express Agreement [Member] \| CRJ 200 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	10
US Airways Express Agreement [Member] \| CRJ 900 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	4
US Airways Express Prorate Agreement [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Notice period for termination of agreement	120 days
US Airways Express Prorate Agreement [Member] \| CRJ 200 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	1
American Capacity Purchase Agreement [Member] \| CRJ 200 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	12
American Capacity Purchase Agreement [Member] \| CRJ 200 [Member] \| ExpressJet [Member]
Agreements with other airlines
Number of aircraft under contract	11
American Prorate Agreement \| Sky West Airlines Inc [Member]
Agreements with other airlines
Notice period for termination of agreement	120 days
American Prorate Agreement \| CRJ 200 [Member] \| Sky West Airlines Inc [Member]
Agreements with other airlines
Number of aircraft under contract	4