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AB1

Boulder / Denver Airport

Bus · Route AB1

Downtown Boulder via E-470 ↔ Denver Airport via E-470

2 alerts Every 30–88.75 min 3:03 AM – 1:13 AM 5 buses live
Track live
Direction
Live · as of 8:30 PM

Stops, live buses and next arrivals

2 service alertsChange at Table Mesa Station beginning Mon Mar 23.
Live data is delayed.
    1. Downtown Boulder Station Gate 217 bus routes26 minthen 9:33 PM
    2. Broadway & University Ave7 bus routes29 minthen 9:36 PM
    3. Broadway & College Ave7 bus routes30 minthen 9:36 PM
    4. Broadway & Euclid Ave10 bus routes31 minthen 9:38 PM
    5. Broadway & Baseline Rd7 bus routes32 minthen 9:39 PM
    6. Broadway & 27th Way3 bus routes33 minthen 9:40 PM
    7. S Broadway & Dartmouth Ave6 bus routes36 minthen 9:43 PM
    8. Table Mesa Dr & 39th St6 bus routes39 minthen 9:45 PM
    9. Table Mesa Dr & Tantra Dr3 bus routes41 minthen 9:48 PM
    10. US 36 & Table Mesa Station Gate A6 bus routes48 minthen 9:55 PM
    11. US 36 & McCaslin Station Gate B8 bus routesDuethen 55 min 3639 · 1 min early
    12. Via Varra Rd & Midway Blvd2 bus routes8 minthen 9:30 PM
    13. US 36 & Flatiron Station Gate A2 bus routes9 minthen 9:33 PM
    14. 13600 Block Via Varra2 bus routes11 minthen 9:33 PM
    15. Denver Airport Station Gate 88 bus routesNo more buses 3610 · 2 min early
    16. Denver Airport Station Gate 68 bus routesNo more buses
    1. Denver Airport Station Gate 88 bus routes20 minthen 50 min
    2. 13500 Block Via Varra2 bus routes25 minthen 52 min 3709 · 3 min late
    3. US 36 & Flatiron Station Gate C4 bus routes26 minthen 54 min
    4. Via Varra Rd & Midway Blvd2 bus routes27 minthen 55 min
    5. US 36 & McCaslin Station Gate E6 bus routes5 minthen 34 min 1509 · 2 min late
    6. US 36 & Table Mesa Station Gate E8 bus routes12 minthen 41 min
    7. Table Mesa Dr & Tantra Dr3 bus routes17 minthen 42 min
    8. S Broadway & Table Mesa Dr6 bus routes44 minthen 9:49 PM
    9. Broadway & Dartmouth PnR6 bus routes21 minthen 46 min
    10. 27th Way & Broadway PnR4 bus routes23 minthen 48 min
    11. Broadway & Baseline Rd11 bus routes24 minthen 49 min
    12. Broadway & Euclid Ave10 bus routes27 minthen 52 min
    13. Broadway & Pleasant St7 bus routes28 minthen 53 min
    14. Broadway & University Ave6 bus routes29 minthen 54 min
    15. Downtown Boulder Station (Ar)17 bus routesNo more buses
    Live arrival Grey times are scheduled Not tracked: scheduled, but no bus is reporting

    Timetable

    Scheduled departures for any day RTD has published. For live arrivals, use the diagram above.

    Sunday schedule Sun, Nov 1

    3 AM
    03
    4 AM
    35
    5 AM
    35
    6 AM
    25
    7 AM
    25
    8 AM
    25
    9 AM
    25
    10 AM
    25
    11 AM
    25
    12 PM
    25
    1 PM
    25
    2 PM
    25
    3 PM
    25
    4 PM
    2555
    5 PM
    25
    6 PM
    102656
    7 PM
    26
    8 PM
    03next 56
    9 PM
    33
    10 PM
    35

    On-time performance

    How much of the time buses ran early, on time or late, hour by hour.

    64% on time today

    from 936 vehicle-minutes

    • On time
    • Late (over 5 min)
    • Early (over 1 min)
    • Fewer than 30 vehicle-minutes
    On time: no more than 1 min early or 5 min late, sampled once a minute from live positions. Use the left and right arrow keys to read each hour.
    Hour-by-hour numbers
    HourOn timeLateEarlyVehicle-minutesPrevious 0 days, on time
    4 PM67%19%14%42–
    5 PM62%17%20%274–
    6 PM63%0%37%214–
    7 PM62%9%30%284–
    8 PM70%7%23%122–

    Connections

    Bus routes you can transfer to from route AB1.

    And 19 more routes at stops along the way. 225Boulder / Lafayette via Baseline225DBoulder / Lafayette via Baseline225TBoulder / Lafayette via Baseline104LWagon Road / Denver Airport Limited145XBrighton / Denver Airport169LBuckley / Tower Dia Limited20528th St / Gunbarrel208Iris / ValmontALLongmont / Denver AirportATArapahoe County / Denver AirportATAArapahoe County / Denver AirportBOLTBoulder / LongmontJUMPBoulder / Lafayette/ ErieNB1Boulder/ Nederland/ EldoraNB2Boulder/ Nederland/ Eldora206Conestoga/ Arapahoe / Fairview H.s.Bound30th Street228ALafayette / Louisville / Broomfield228FLafayette / Louisville / Broomfield

    About route AB1

    Route AB1 (Boulder / Denver Airport) is a RTD bus route with 16 stops between Downtown Boulder Station Gate 2 and Denver Airport via E-470.

    Times with the live mark come from each bus's GPS and RTD's real-time predictions. Times marked "Not tracked" are scheduled trips with no bus reporting. All other times are from RTD's published schedule (feed Sep26-37329-18-19-20261030-143459).

    How often does route AB1 run?

    Every 30–88.75 min for most of the day on weekdays, based on the published schedule.

    When does route AB1 start and stop?

    The first bus leaves around 3:03 AM and the last arrives around 1:13 AM.

    What are timepoints?

    Timepoints are stops where the bus is scheduled to wait if it's running early; times at the stops between them are estimates. On long routes, the diagram shows timepoints, transfer stops and stops with a bus nearby, and groups the stops in between.