Billings Logan International Airport (BIL)
1901 Terminal Circle, Billings, MT 59105
Portland (OR), Seattle/Tacoma
Glasgow (MT), Glendive, Havre, Sidney (MT), Wolf Point
Denver
Las Vegas, Phoenix/Mesa
Minneapolis/St. Paul, Salt Lake City
Chicago-O'Hare, Denver
Dallas/Ft. Worth
​
Seasonal: Chicago-O'Hare, Phoenix
Salt Lake City
Bozeman Yellowstone International Airport (BZN)
850 Gallatin Field Rd, 15 Belgrade, MT 59714
Portland (OR), Seattle/Tacoma
​
Seasonal: Boise, San Diego, San Francisco
Seasonal: Chicago-O'Hare, Los Angeles, Phoenix (Begins 6/4/26)
Seasonal: Boston, New York-JFK
Chicago-O'Hare, Denver, San Francisco
​
Seasonal: Houston-Intercontinental, Los Angeles, Newark, Washington-Dulles
Las Vegas, Phoenix/Mesa
​
Seasonal: Nashville
Atlanta, Minneapolis/St. Paul, Salt Lake City
​
Seasonal: Boston, Detroit, New York-LaGuardia
Denver, Las Vegas
​
Seasonal: Chicago-Midway, Dallas-Love, Nashville, San Diego (Resumes 3/7/26)
Denver, San Francisco
​
Seasonal: Chicago-O'Hare, Los Angeles
Dallas/Ft. Worth
​
Seasonal: Charlotte, Chicago-O'Hare, New York-LaGuardia
Salt Lake City, Seattle/Tacoma
​
Seasonal: Austin (Begins 6/16/26), Los Angeles
Seasonal: Minneapolis/St. Paul
Bert Mooney Airport (BTM)
101 Airport Rd, Butte, MT 59701
Salt Lake City
Denver
Great Falls International Airport (GTF)
2800 Terminal Dr, Great Falls, MT 59404
Seattle/Tacoma
Seasonal: Denver
Las Vegas, Phoenix/Mesa
Denver
​
Seasonal: Chicago-O'Hare
Salt Lake City
Helena Regional Airport (HLN)
2850 Mercer Loop, Helena, MT 59602
Glacier Park International Airport (FCA)
4170 US-2, Kalispell, MT 59901
Portland (OR), Seattle/Tacoma
​
Seasonal: San Diego
Seasonal: Phoenix (Begins 6/19/26)
Seasonal: Minneapolis/St. Paul
Las Vegas
​
Seasonal: Oakland, Phoenix/Mesa
Minneapolis/St. Paul, Salt Lake City
Denver
​
Seasonal: Chicago-O'Hare, Houston-Intercontinental
Seasonal: Chicago-O'Hare, Dallas/Ft. Worth, New York-LaGuardia
Salt Lake City
Denver
​
Seasonal: Chicago-O'Hare, Los Angeles, San Francisco
Missoula Montana Airport (MSO)
5225 W. Broadway St, Missoula, MT 59808
Portland (OR), Seattle/Tacoma
​
Seasonal: San Diego
Dallas/Ft. Worth
​
Seasonal: Chicago-O'Hare, Los Angeles
Denver
Denver
​
Seasonal: Chicago-O'Hare, San Francisco
Las Vegas, Phoenix/Mesa
​
Seasonal: Los Angeles, Oakland, Orange County (CA)
Minneapolis/St. Paul, Salt Lake City
Seasonal: Minneapolis/St. Paul
Dallas/Ft. Worth
Salt Lake City
Denver
​
Seasonal: Chicago-O'Hare
Yellowstone Airport (WYS)
721 Airport Rd, West Yellowstone, MT 59758
Seasonal: Salt Lake City
Seasonal: Denver
Glasgow Valley County Airport (GGW)
89 Airport Rd, Glasgow, MT 59230
Billings
Havre City-County Airport (HVR)
5404 9th St W. Havre, MT 59501
Billings
Sidney-Richland Municipal Airport (SDY)
540 Airport Rd, Sidney, MT 59270
Billings
L.M. Clayton Airport (OLF)
7057 Montana St. Wolf Point, MT 59201
Billings