AB1

RTD Route AB1 Boulder / Denver Airport

Bus Denver, CO30 stopsto Denver Airport via E-470to Downtown Boulder via E-470

View live on the mapOfficial RTD schedule All RTD routes

LIVE SERVICE STATUS

Checking the RTD alerts feed…

Schedule summary

Computed from the RTD GTFS feed (version Sep26-37303-16-17-20261023-150015). Each row is the next day of that kind with service.

DayDirectionFirstLastTripsTypical gap
WeekdayTue, Oct 27to Denver Airport via E-4702:57 AM11:09 PM23~60 min
to Downtown Boulder via E-4704:45 AM12:45 AM22~60 min
SaturdaySat, Oct 31to Denver Airport via E-4703:04 AM9:27 PM18~60 min
to Downtown Boulder via E-4705:20 AM11:20 PM20~60 min
SundaySun, Nov 1to Denver Airport via E-4702:03 AM9:35 PM26~60 min
to Downtown Boulder via E-4704:20 AM11:10 PM27~40 min

Stops & times — today, Tue, Oct 27

To Denver Airport via E-470 · 15 stops

Departures from Downtown Boulder Station Gate 2 today:

2:57 AM4:27 AM5:06 AM5:12 AM6:07 AM7:07 AM8:07 AM9:07 AM9:37 AM10:37 AM11:07 AM11:37 AM12:37 PM1:37 PM2:37 PM4:07 PM4:37 PM5:37 PM7:09 PM8:09 PM9:09 PM10:09 PM11:09 PM

  1. 1

    Downtown Boulder Station Gate 2

    First 2:57 AM · Last 11:09 PM · 22 scheduled departures

  2. 2

    Broadway & University Ave

    First 3:02 AM · Last 11:15 PM · 22 scheduled departures

  3. 3

    Broadway & College Ave

    First 3:03 AM · Last 11:16 PM · 22 scheduled departures

  4. 4

    Broadway & Euclid Ave

    First 3:06 AM · Last 11:19 PM · 22 scheduled departures

  5. 5

    Broadway & Baseline Rd

    First 3:08 AM · Last 11:21 PM · 22 scheduled departures

  6. 6

    Broadway & 27th Way

    First 3:09 AM · Last 11:23 PM · 22 scheduled departures

  7. 7

    S Broadway & Dartmouth Ave

    First 3:10 AM · Last 11:24 PM · 22 scheduled departures

  8. 8

    Table Mesa Dr & 39th St

    First 3:12 AM · Last 11:26 PM · 22 scheduled departures

  9. 9

    Table Mesa Dr & Tantra Dr

    First 3:13 AM · Last 11:27 PM · 22 scheduled departures

  10. 10

    US 36 & Table Mesa Station Gate A

    First 3:20 AM · Last 11:35 PM · 23 scheduled departures

  11. 11

    US 36 & McCaslin Station Gate B

    First 3:26 AM · Last 11:42 PM · 23 scheduled departures

  12. 12

    Via Varra Rd & Midway Blvd

    First 3:31 AM · Last 11:47 PM · 23 scheduled departures

  13. 13

    US 36 & Flatiron Station Gate A

    First 3:33 AM · Last 11:49 PM · 23 scheduled departures

  14. 14

    13600 Block Via Varra

    First 3:33 AM · Last 11:50 PM · 23 scheduled departures

  15. 15

    Denver Airport Station Gate 6

    First 4:10 AM · Last 12:27 AM (+1 day) · 23 scheduled departures

To Downtown Boulder via E-470 · 15 stops

Departures from Denver Airport Station Gate 8 today:

4:45 AM6:15 AM7:15 AM8:15 AM9:15 AM10:15 AM10:45 AM11:15 AM11:45 AM12:45 PM1:15 PM1:45 PM2:45 PM3:45 PM5:15 PM6:15 PM6:45 PM8:15 PM9:45 PM10:45 PM11:45 PM12:45 AM

  1. 1

    Denver Airport Station Gate 8

    First 4:45 AM · Last 12:45 AM (+1 day) · 22 scheduled departures

  2. 2

    13500 Block Via Varra

    First 5:16 AM · Last 1:16 AM (+1 day) · 22 scheduled departures

  3. 3

    US 36 & Flatiron Station Gate C

    First 5:18 AM · Last 1:18 AM (+1 day) · 22 scheduled departures

  4. 4

    Via Varra Rd & Midway Blvd

    First 5:18 AM · Last 1:18 AM (+1 day) · 22 scheduled departures

  5. 5

    US 36 & McCaslin Station Gate E

    First 5:25 AM · Last 1:25 AM (+1 day) · 22 scheduled departures

  6. 6

    US 36 & Table Mesa Station Gate E

    First 5:33 AM · Last 1:33 AM (+1 day) · 22 scheduled departures

  7. 7

    Table Mesa Dr & Tantra Dr

    First 5:34 AM · Last 1:34 AM (+1 day) · 22 scheduled departures

  8. 8

    S Broadway & Table Mesa Dr

    First 5:35 AM · Last 1:35 AM (+1 day) · 22 scheduled departures

  9. 9

    Broadway & Dartmouth PnR

    First 5:37 AM · Last 1:37 AM (+1 day) · 22 scheduled departures

  10. 10

    27th Way & Broadway PnR

    First 5:39 AM · Last 1:39 AM (+1 day) · 22 scheduled departures

  11. 11

    Broadway & Baseline Rd

    First 5:39 AM · Last 1:39 AM (+1 day) · 22 scheduled departures

  12. 12

    Broadway & Euclid Ave

    First 5:42 AM · Last 1:43 AM (+1 day) · 22 scheduled departures

  13. 13

    Broadway & Pleasant St

    First 5:43 AM · Last 1:44 AM (+1 day) · 22 scheduled departures

  14. 14

    Broadway & University Ave

    First 5:44 AM · Last 1:45 AM (+1 day) · 22 scheduled departures

  15. 15

    Downtown Boulder Station (Ar)

    First 5:48 AM · Last 1:49 AM (+1 day) · 22 scheduled departures

RTD Route AB1 Boulder / Denver Airport — questions

What time does RTD Route AB1 Boulder / Denver Airport run on weekdays?

On a typical weekday (Tue, Oct 27), the first RTD Route AB1 Boulder / Denver Airport departure is 2:57 AM and the last is 11:09 PM, running roughly every 60 minutes. Times are the published schedule from the RTD GTFS feed (version Sep26-37303-16-17-20261023-150015).

Where does RTD Route AB1 Boulder / Denver Airport go?

RTD Route AB1 Boulder / Denver Airport serves 30 stops: Downtown Boulder Station Gate 2 → Denver Airport Station Gate 6 (to Denver Airport via E-470); Denver Airport Station Gate 8 → Downtown Boulder Station (Ar) (to Downtown Boulder via E-470). The full ordered stop list with first and last departure times is on this page.

Does RTD Route AB1 Boulder / Denver Airport run on weekends?

Yes — Saturday service runs 38 trips; Sunday service runs 53 trips. See the schedule summary for first and last times.

Is RTD Route AB1 Boulder / Denver Airport delayed or on detour right now?

The live service status section at the top of this page reads RTD's realtime alerts feed — detours, suspensions and delays for this route appear there as the agency posts them. Everything else on this page is the published timetable.

Can I watch RTD Route AB1 Boulder / Denver Airport live on a map?

Yes — the WorldEye globe carries RTD's live vehicle positions on its transit layer. Open the live map from this page, and tap any vehicle or stop for its next arrivals. It's free, no signup.

More Bus routes

Times on this page are the published schedule from RTD's GTFS feed (version Sep26-37303-16-17-20261023-150015); live status comes from the agency's realtime alerts feed and can differ. Data: Regional Transportation District (RTD). Long name as published: “Boulder / Denver Airport”. WorldEye is a free viewer — for fares, passes and official notices, see RTD's own site.

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