Airlines and Aircraft Serving Billings Effective November 15, 1979
BIG SKY AIRLINES
Aircraft Operated:
Cessna, Handley Page Jetstream
Destinations Served:
Butte (MT), Casper (WY), Great Falls (MT), Helena (MT)
FRONTIER AIRLINES
Aircraft Operated:
Boeing 737-200, DeHavilland Canada DHC-6 Twin Otter
Destinations Served:
Bozeman (MT), Denver (CO), Glasgow (MT), Great Falls (MT), Helena (MT), Lewiston (MT), Miles City (MT)
NORTHWEST ORIENT AIRLINES
Aircraft Operated:
Boeing 727-200, McDonnell Douglas DC-10
Destinations Served:
Bismarck (ND), Bozeman (MT), Chicago O'Hare (IL), Great Falls (MT), Helena (MT), Minneapolis/Saint Paul (MN)
WESTERN AIRLINES
Aircraft Operated:
Boeing 727-200, Boeing 737-200
Destinations Served:
Denver (CO), Great Falls (MT), Minneapolis/Saint Paul (MN), Salt Lake City (UT), Seattle/Tacoma (WA)