Denver International Airport
Terminals Jeppesen Terminal — single terminal, Concourses A, B, and C beyond security, Ground transportation on Terminal Level 5
— ROUTING
Downtown Quote-planned window into downtown Denver, Union Station, or Cherry Creek — DIA sits on its own roadway system off Peña Boulevard northeast of the city, and the honest distance benchmark is RTD's A Line, which takes approximately 37 minutes between the airport and Union Station; private-car timing moves with Peña Boulevard, I-70, and downtown pressure. · Suburbs 40 to 90+ min to Boulder via E-470 or US 36 depending on baggage release and corridor pressure; I-70 mountain transfers plan at 2.5 to 4.5+ hours to Vail and 4 to 7+ hours to Aspen, checked against CDOT traction-law status and COtrip conditions before departure.