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  6. Ab3 Route

Ab3 Bus - Boulder / Denver Airport

A bus service operated by Regional Transportation District
List of stops
      Number of stops: 11
      Saturdays

      Downtown Boulder Station Gate 2 – Denver Airport Station Gate 6

      Downtown Boulder Station Gate 2

      		06:5907:5916:2917:2918:26

      Canyon Blvd & Mcguckin Wy

      		07:0308:0316:3317:3318:30

      28th St & Arapahoe Ave

      		07:0708:0716:3717:3718:34

      28th St & Taft Dr

      		07:0708:0716:3717:3718:34

      28th St & Colorado Ave

      		07:0808:0816:3817:3818:35

      US 36 & Table Mesa Station Gate A

      		07:16
      07:21      		08:16
      08:21      		16:46
      16:51      		17:46
      17:51      		18:43
      18:48

      US 36 & Mccaslin Station Gate B

      		07:2908:2916:5917:5918:56

      Via Varra Rd & Midway Blvd

      		07:3408:3417:0418:0419:01

      US 36 & Flatiron Station Gate A

      		07:36
      07:37      		08:36
      08:37      		17:06
      17:07      		18:06
      18:07      		19:03
      19:04

      13600 Block Via Varra

      		07:3808:3817:0818:0819:05

      Denver Airport Station Gate 6

      		08:1709:1717:4718:4719:44

      Denver Airport Station Gate 8 – Downtown Boulder Station (Ar)

      Denver Airport Station Gate 808:5009:5018:2019:20
      13500 Block Via Varra09:2110:2118:5119:51
      US 36 & Flatiron Station Gate C09:22
      09:23      		10:22
      10:23      		18:52
      18:53      		19:52
      19:53
      Via Varra Rd & Midway Blvd09:2310:2318:5419:54
      US 36 & Mccaslin Station Gate E09:3010:3019:0120:01
      US 36 & Table Mesa Station Gate E09:4410:4419:1620:08
      28th St & College Ave09:4910:4919:2120:13
      28th St & Sundown La09:5010:5019:2220:14
      28th St & Arapahoe Ave09:5110:5119:2320:15
      Canyon Blvd & 28th St09:5710:5719:2820:20
      Downtown Boulder Station (Ar)10:0211:0219:3220:24
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      Route Path (Streets & Roads)

      Outbound: Downtown Boulder Station Gate 2 – Denver Airport Station Gate 6
      14th Street - Canyon Boulevard - 28th Street - Table Mesa Drive - Center Drive - Via Varra - Denver–Boulder Turnpike - Via Varra - Terminal East (Commercial Vehicles)
      Inbound: Denver Airport Station Gate 8 – Downtown Boulder Station (Ar)
      Terminal East (Commercial Vehicles) - Via Varra - Denver–Boulder Turnpike - Via Varra - Denver–Boulder Turnpike - Table Mesa Drive - 28th Street Frontage Road - 28th Street - Canyon Boulevard - Walnut Street

      Schedules and stops for this route are published in GTFS: rtd-denver-flex

      Additional route information: rtd-denver.com

      Frequently asked questions about route Ab3

      • What time does route Ab3 start operating?

        Services on route Ab3 start at 06:59 on Saturdays.

      • What time does route Ab3 stop operating?

        Services on route Ab3 end at 19:44 on Saturdays.

      • Is there a stop for route Ab3 near me?

        View the nearest stop for route Ab3.

      Ab3 (Boulder Buses)

      The first stop of the Ab3 bus route is Downtown Boulder Station Gate 2 and the last stop is Denver Airport Station Gate 6. Ab3 (Boulder / Denver Airport) is operational during everyday.

      Additional information: Ab3 has 11 stops. The total trip duration for this route is approximately 78 minutes.

      More than 5 million users trust busmaps.com for public transport information. Find suggested Buses routes in Boulder, real-time vehicle tracking, route maps, nearby stops, and offline PDF schedules.

      Ab3 bus near me

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      Last updated on November 10, 2026