Graphic that reads flex Boulder Express

Flex – Boulder Express

Fort Collins – Boulder

As Northern Colorado’s premier regional bus route, FLEX connects riders with stops between Fort Collins, Loveland, Berthoud, Longmont, and Boulder, providing a convenient way to travel throughout the region. FLEX is operated by Transfort and made possible through partnerships with other regional transit agencies. 

As a FLEX rider, you have convenient connections to the RTD bus system in Longmont and Boulder, taking  you to even more destinations across the region. Whether commuting to work, attending school, or exploring all that Northern Colorado has to offer, FLEX is the perfect way to get there.


Use our mobile app to check real-time bus arrival times and track your bus so you never miss a ride.

View Map and Timetable (PDF)
Trip Planner and Bus Tracker

Route Map

Flex Boulder Express - Fort Collins Downtown Transit Center to CU Boulder via US287 and SH119

Route Schedule

Use the schedule and service type buttons to select a schedule

Arrivals in bold are scheduled time points.

Check schedule exceptions for holiday and event service schedules

Within a table cell, hit the ‘S’ key to toggle selection of the stop. Hit the ‘F’ key to toggle filtering of selected stops. Hit the ‘A’ key to toggle between all stops and timepoint stops. Hit the question mark key to hear these options again.

Direction
Service Type
Service Type

*Times listed are approximate. Buses may depart early, depending on traffic. For additional times and real-time tracking, search for your stop on BusTime: fcgov.com/bustimes

Other routes & schedules

  • View information for MAX Bus Rapid Transit Service
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  • View information for Flex - Longmont
  • View information for Flex - Boulder Express
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