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With more than 9,000 stops spanning eight counties in the Denver metro area — including 11 routes with service to Denver Union Station — RTD’s bus service is the perfect way to get where you need to go.

Bus Lines

Denver Union Station is serviced by the following RTD bus lines:

  • Route 9: West 10th Avenue
  • Route 10: East 12th Avenue
  • Route 15: East Colfax Avenue
  • Route 19: North Pecos
  • Route 20: 20th Avenue
  • Route 32: West 32nd Avenue / City Park
  • Regional Route 120X: Wagon Road / Thornton Express
  • Regional Route LD1: Longmont / Denver
  • Flatiron Flyer Route FF1: Denver – Boulder Station
  • Flatiron Flyer Route FF3: Denver – Broomfield
  • RTD Free MallRide


The RTD system is divided into four zones: A, B, C, and Airport. Your fare is determined by which zones you travel in over the course of a three-hour journey.

  • Local (1-2 zones): $3.00
  • Regional (3 zones): $5.25
  • Airport (airport zone): $10.50

Discounted fares are available for those who qualify. For detailed information, please consult the RTD website here.

Schedules, fares, and route information are subject to change. For the most up-to-date information, including detours and service disruptions, please consult the RTD website here.