DuBois Regional Airport — Dubois, United States

DuBois Regional Airport, coded DUJ, sits in rural Clearfield County, Pennsylvania, serving the small city of DuBois and the surrounding Allegheny Plateau region. The airport has historically hosted subsidized Essential Air Service flights, connecting this otherwise isolated part of north-central Pennsylvania to larger hub airports for business and medical travel. Its single main runway can accommodate regional jets and turboprops, and the facility also supports general aviation, corporate flights tied to local manufacturing and healthcare employers, and occasional charter operations. DUJ's role illustrates how small regional airports function as lifelines for communities far from major interstates, keeping DuBois connected despite low overall passenger volumes and reliance on federal aviation subsidy programs to maintain any scheduled service at all.