David S. Davidson. Great Falls has had airline flights since the 1930s. For at least part of each year from 1977 to 1981 it saw scheduled Northwest DC-10s EWR-DTW-ORD-BIL-GTF-GEG-SEA and back. In 2011 the airport recorded the most boardings (172,415) in its history. GTF was the fifth-busiest of the state's 15 major airports in 2011, behind Billings (407,960 enplanements), Bozeman (397,822), Missoula (292,530), and Kalispell (179,034). In early 2012, Frontier Airlines announced new flights to Great Falls from the Denver hub. The Airport Authority hoped to address rising ticket prices and a seasonal shortage of seats with low-cost Frontier flights, but Frontier announced it was pulling out of Great Falls during its Denver hub restructuring in December 2014. AvMax, a Calgary-based large jet maintenance and repair business, opened a large operation at GTF in 2006; they employ 150. Model airplane collection The terminal contains what is believed to be the world's largest collection of model airplanes. 883 such airplanes are on display, about 2/3 of the entire collection. The models were built and painted by local Great Falls resident Bary Poletto from 1977 through 2003. He died in January 2013. Facilities The airport covers 2,113 acres (855 ha) at an elevation of 3,680 feet (1,122 m). It has three asphalt runways: 3/21 is 10,502 by 150 feet (3,201 x 46 m); 16/34 is 5,722 by 150 feet (1,744 x 46 m); 7/25 is 4,294 by 75 feet (1,309 x 23 m). In the year ending March 31, 2011 the airport had 41,591 aircraft operations, average 113 per day: 52% general aviation, 25% air taxi, 12% airline, and 11% military. 108 aircraft were then based at this airport: 61% single-engine, 17% military, 11.1% multi-engine, 8% helicopter, and 3% jet. Airlines and destinations Passenger Cargo Statistics Top destinations See also Montana World War II Army Airfields Air Transport Command List of airports in Montana References External links Great Falls International Airport, official site Montana Air National Guard Aerial image as of July 1995 from USGS The National Map Airports in Montana Transportation in Cascade County, Montana Buildings and structures in Great Falls, Montana