Ennis Big Sky

Airport and flying

Ennis Big Sky (EKS) is a public, non-towered airport in Ennis, Madison County, Montana. Field elevation is 5,433 ft. Runway 16/34 is 7,600 by 100 ft, asphalt (excellent condition). Fuel on the field: 100LL, Jet A-1, Jet A-1+.

Nearest fuel: Ruby Valley Field (RVF, Twin Bridges), 31.6 nm NW, 6,000 ft runway, 100LL, Jet A; Three Forks (9S5), 36.3 nm N, 5,099 ft runway, 100LL; Bozeman Yellowstone International (BZN, Bozeman), 36.7 nm NE, 8,994 ft runway, 100, 100LL, Jet A.

Major airports: Bozeman Yellowstone International (BZN, Bozeman), 36.7 nm NE, 8,994 ft runway, 100, 100LL, Jet A; Billings Logan International (BIL, Billings), 134.4 nm E, 10,518 ft runway, 100LL, Jet A.

Regional airports: Yellowstone (WYS, West Yellowstone), 41.9 nm SE, 8,400 ft runway, 100LL, Jet A-1+; Bert Mooney (BTM, Butte), 54.2 nm NW, 9,000 ft runway, 100, 100LL, Jet A; Helena Regional (HLN, Helena), 81.1 nm N, 9,000 ft runway, 100, 100LL, Jet A.

Nearby airports: 66 Ranch Airstrip (47MT, Ennis), 5.3 nm NW, 2,100 ft runway; Montfort Ranch (MT68, Cameron), 5.7 nm SW, 1,007 ft runway; Ousel Falls (MT94, Big Sky), 13.7 nm E, 900 ft runway; Nine Quarter Circle Ranch (1MT0, Gallatin Gateway), 19.4 nm SE, 4,000 ft runway.

Official FAA airport record (EKS) · FAA data effective 2026-10-29