Dubuque Regional Airport — Dubuque, United States

DBQ denotes Dubuque Regional Airport, serving Dubuque, Iowa, a city perched along the Mississippi River at the point where Iowa, Illinois, and Wisconsin meet. This tri-state position gives DBQ a catchment area larger than Dubuque's own population would suggest, drawing passengers from nearby communities in all three states who prefer a shorter regional flight over driving to Chicago, Cedar Rapids, or the Twin Cities. Dubuque's economy blends manufacturing, education, and tourism tied to its riverfront and bluff-lined scenery, and the airport supports business travel connected to those industries. DBQ typically offers flights to major connecting hubs, keeping this historic river city linked to the national air network despite its modest size.