using de Havilland Canada DHC-6 Twin Otter turboprop aircraft. Big Sky Airlines provided turboprop service to Billings from 1980 until 2008 using Fairchild Swearingen Metroliner commuter aircraft followed by Beech 1900D commuter aircraft. Great Lakes Airlines flew from Miles City to Denver with one stop at Gillette, WY using Beech 1900D aircraft from 2008 through mid-2011. Silver Airways was the final carrier providing service to Billings from 2011 until all service ended on July 15, 2013 after government subsidies were cancelled due to a lack of passenger traffic. Silver also flew Beech 1900D aircraft. Accidents Northwest Airlines Flight 1 – Lockheed Super Electra – January 13, 1938 Northwest Airlines Flight 1 – Douglas DC-3A – May 12, 1942 Frontier Airlines Flight 32 – Douglas DC-3C – March 12, 1964 References Other sources Essential Air Service documents (Docket OST-1997-2605) from the U.S. Department of Transportation: Order 2005-12-20: selecting Big Sky Transportation Co., d/b/a Big Sky Airlines, to continue providing essential air service at seven Montana communities (Glasgow, Glendive, Havre, Lewistown, Miles City, Sidney, and Wolf Point) for a new two-year period beginning March 1, 2006, at a subsidy of $6,838,934 annually. Order 2007-11-21: selecting Big Sky Transportation Co., d/b/a Big Sky Airlines, to continue providing essential air service at seven Montana communities for a new two-year period beginning March 1, 2008, at a subsidy of $8,473,617 annually. Order 2007-12-22: allowing Big Sky Transportation Co., d/b/a Big Sky Airlines, to suspend its subsidized essential air services at seven Montana communities on the date that Great Lakes Aviation, Ltd., begins replacement service, and selecting Great Lakes to provide those services at subsidy rates totaling $8,201,992. Order 2008-7-9: approving an alternate service pattern requested by Lewistown, Miles City and Sidney, Montana. Order 2011-1-27: selecting Gulfstream International Airlines, to provide subsidized essential air service (EAS) with 19-passenger Beechcraft B-1900D aircraft at Glasgow, Glendive, Havre, Lewistown, Miles City, Sidney, and Wolf Point, Montana, for a two-year period beginning when the carrier inaugurates full EAS at all seven communities through the end of the 24th month thereafter, at a combined annual subsidy rate of $10,903,854. External links Miles City Airport Airports in Montana Buildings and structures in Miles City, Montana Former Essential Air Service airports Transportation in Custer County, Montana