United adds one-stop bus service to 2 Colorado destinations Mar 11, 2021 This post contains references to products from one or more of our advertisers. We may receive compensation when you click on links to those products. Terms apply to the offers listed on this page. For an explanation of our Advertising Policy, visit this page. United Airlines is expanding its reach in Colorado. On Thursday, March 11, the Chicago-based carrier began its partnership with luxury-bus operator Landline to offer flyers one-stop itineraries through its Denver hub, with ground transportation to or from Breckenridge and Fort Collins. The new partnership allows United customers to search and book itineraries to both destinations, with the last leg of the journey operated by one of Landline’s premium coach buses. Once-daily service to Breckenridge began on Thursday, while four-times daily Fort Collins service begins on April 1.