and 932,828 in 2011. In July 2021, the airport announced plans to become a base for Allegiant Air. Expansion Interior renovation work began in 2009 on the airport and concluded in 2010. The project, designed by Brooks Borg Skiles AE LLP, included new carpets, paint, gate counters, seating, a new ceiling, signage, and a fire sprinkler system. Also included in the upgrade was a common-use project allowing any airline to use any gate at the airport. A new restroom was also added to the C concourse to allow for future concourse expansion. The airport modernized baggage handling capabilities with expanded processing facilities as well. In addition to work inside the passenger terminal, the airport was building a rental car facility and new parking facilities. Terminal Replacement In April 2022, the Des Moines International Airport released their terminal study, calling for a new terminal building to be built, replacing the current one. Older plans capped the airport capacity to 17 gates, 5 more than their current terminal design. The new plan allows for a minimum of 18 gates with a further expansion option of up to 22 gates and 5 additional commercial aircraft parking spaces with the project being built in phases to mitigate costs. The plan also includes US Customs and Border Protection for the airport to allow processing of international passengers. In May, the airport asked the surrounding towns and counties to contribute more than $2 million to the airport expansion plans. Work on the new terminal project isn't set to begin until 2024 with an estimated price tag of $769 million. Facilities The airport covers 2,625 acres (1,062 ha) at an elevation of 958 feet (292 m). It has two runways: 5/23 is 9,004 by 150 feet (2,744 x 46 m); 13/31 is 9,002 by 150 feet (2,744 x 46 m). In the year ending December 31, 2021, the airport had 66,320 aircraft operations, average 182 per day: 44% airline, 9% air taxi, 44% general aviation and 4% military. 105 aircraft were then based at the airport: 63 single-engine, 16 multi-engine, 23 jet, and three helicopter. The terminal has two concourses; concourse A with gates A1–A5 (used by Allegiant Air, Southwest Airlines, United Airlines, and United Express) and concourse C, with gates C1–C7 (used by American Airlines, American Eagle, Delta Air Lines, Delta Connection, and Frontier Airlines). The airport is home to a maintenance base for Endeavor Air.