Kirksville Regional Airport — Kirksville, United States

IRK is Kirksville Regional Airport, serving Kirksville, Missouri, a small city in the northeastern part of the state best known as home to Truman State University and A.T. Still University, the founding institution of osteopathic medicine. The airport receives Essential Air Service subsidized flights, a federal program supporting scheduled commercial air service to small communities that would otherwise lack it. This makes IRK a lifeline connection to hub airports like Chicago for students, faculty, medical professionals, and local residents in rural north Missouri. Beyond passenger service, the airport supports general aviation activity typical of small regional fields, including flight training and agricultural operations common across the Midwest's farming communities.