AA: BOS-GCK (Garden City, KS) $131 RT AI, 3.3 cpm, 3.18 cpm with 500 mile minimums Now I feel ripped off for the $188 trip I booked . GCK has twice daily service from DFW on an ERJ. However, only the midday flight seems to be available for the low fare. Same day turns on the same plane are possible, Saturdays included. Dates in late November, first half of December, most of January, and February 1st and 2nd.