The City of Billings, Billings Logan International Airport (BIL), in partnership with Visit Billings, the Billings Chamber of Commerce, and Big Sky Economic Development are thrilled to welcome the expansion of service from American Airlines with the launch of their daily seasonal flight from Billings (BIL) to Chicago (ORD).  This expanded season service begins today, Wednesday, June 5th, 2024, and will extend through October 2024.