Airlines and Aircraft Serving Helena Effective November 15, 1979
BIG SKY AIRLINES
Aircraft Operated:
     Cessna, Handly Page Jetstream
Destinations Served:
     Billings (MT), Butte (MT), Missoula (MT)

FRONTIER AIRLINES

Aircraft Operated:
    
Boeing 737-200
Destinations Served:
     Billings (MT), Missoula (MT)

NORTHWEST ORIENT AIRLINES
Aircraft Operated:
    
Boeing 727-200
Destinations Served:
     Billings (MT), Bozeman (MT), Missoula (MT), Spokane (WA)

WESTERN AIRLINES

Aircraft Operated:
    
Boeing 737-200
Destinations Served:
     Butte (MT)
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