The closest major airport near Ascension St. Mary’s Hospital Health Center at Birch Run in Birch Run is Bishop Intl. Airport (FNT). It’s around 48 kilometers to the south. Another option is MBS Intl. Airport (MBS), approximately 64 kilometers northwest of Ascension St. Mary’s Hospital Health Center at Birch Run. Whether you rent a car from an airport, the city center or close to a big-name attraction, you’ll appreciate the flexibility of having your own ride available 24/7.