Home Home Toll Free Number: 1-800-990-1283 Monday - Friday 8:00 a.m. -5:00 p.m. (MST) Emergency After Hours: (406) 899-0381 Tour Coach Office: (406) 761-0967 School Bus Charters: (406) 454-1283 (406) 761-3801 FAX Contact Us Mailing Address: Big Sky Bus Lines PO BOX 472 Black Eagle, MT 59414 Physical Address: Big Sky Bus Lines 2920 15th St NE Black Eagle, MT We are the largest transportation provider in North Central Montana. Locally owned and operated and serving the west since 1982.