Bus Ab2 - Boulder / Denver Airport in Boulder: Stops & Timetable

A bus service operated by Regional Transportation District

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List of stops

Number of stops: 15

Monday to Friday

Denver Airport Station Gate 8 – Boulder Junction at Depot Square Station Gate B5

Denver Airport Station Gate 8	06:20	07:51	08:51	09:50	16:50	17:50	18:50	19:50	20:50
13500 Block Via Varra	06:51	08:22	09:22	10:21	17:21	18:21	19:21	20:21	21:21
US 36 & Flatiron Station Gate A	06:52 06:53	08:23 08:24	09:23 09:24	10:22 10:23	17:22 17:23	18:22 18:23	19:22 19:23	20:22 20:23	21:22 21:23
Via Varra Rd & Midway Blvd	06:54	08:24	09:24	10:24	17:24	18:24	19:24	20:24	21:23
US 36 & Mccaslin Station Gate E	07:01	08:31	09:31	10:31	17:31	18:31	19:31	20:31	21:30
US 36 & Table Mesa Station Gate E	07:09	08:39	09:39	10:39	17:40	18:40	19:40	20:40	21:38
28th St & College Ave	07:15	08:45	09:45	10:45	17:46	18:46	19:44	20:44	21:42
28th St & Sundown La	07:16	08:46	09:46	10:46	17:47	18:47	19:45	20:45	21:43
28th St & Arapahoe Ave	07:17	08:47	09:47	10:47	17:48	18:48	19:46	20:46	21:44
28th St & Canyon Blvd	07:20	08:50	09:50	10:50	17:51	18:51	19:49	20:48	21:46
Boulder Junction at Depot Square Station Gate B5	07:26	08:56	09:56	10:56	17:56	18:56	19:54	20:53	21:51

Boulder Junction at Depot Square Station Gate B5 – Denver Airport Station Gate 6

Boulder Junction at Depot Square Station Gate B5	05:47 05:52	06:46 06:51	07:46 07:51	08:46 08:51	14:45 14:50	15:45 15:50	16:45 16:50	17:55 18:00	18:55 19:00
28th St & Canyon Blvd	05:55	06:54	07:54	08:54	14:54	15:54	16:54	18:04	19:04
28th St & Arapahoe Ave	06:00	07:01	08:01	09:01	15:01	16:01	17:02	18:12	19:12
28th St & Taft Dr	06:00	07:01	08:01	09:01	15:01	16:01	17:02	18:12	19:12
28th St & Colorado Ave	06:01	07:02	08:02	09:02	15:02	16:02	17:03	18:13	19:13
US 36 & Table Mesa Station Gate A	06:08 06:13	07:09 07:14	08:09 08:14	09:09 09:14	15:09 15:14	16:09 16:14	17:09 17:14	—	19:19 19:24
US 36 & Mccaslin Station Gate B	06:19	07:22	08:22	09:22	15:22	16:22	17:22	18:32	19:32
Via Varra Rd & Midway Blvd	06:24	07:27	08:27	09:27	15:27	16:27	17:27	18:37	19:37
US 36 & Flatiron Station Gate A	06:25 06:26	07:29 07:30	08:29 08:30	09:29 09:30	15:29 15:30	16:29 16:30	17:29 17:30	18:39 18:40	19:39 19:40
13600 Block Via Varra	06:26	07:31	08:31	09:31	15:31	16:31	17:31	18:41	19:41
Denver Airport Station Gate 6	07:03	08:10	09:10	10:10	16:10	17:10	18:10	19:20	20:20

Times marked with "—" indicate that the vehicle does not stop at this stop.

Route Path (Streets & Roads)

Outbound: Denver Airport Station Gate 8 – Boulder Junction at Depot Square Station Gate B5

Terminal East Departures - Via Varra - Denver–Boulder Turnpike - Via Varra - Denver–Boulder Turnpike - Table Mesa Drive - 28th Street Frontage Road - 28th Street - Junction Place

Inbound: Boulder Junction at Depot Square Station Gate B5 – Denver Airport Station Gate 6

Junction Place - 28th Street - Table Mesa Drive - Center Drive - Via Varra - Denver–Boulder Turnpike - Via Varra - Terminal East Departures

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

Bus Ab2 FAQ

What time does the Ab2 bus start operating?

Services on the Ab2 - Boulder / Denver Airport bus start at 06:20 on Monday, Tuesday, Wednesday, Thursday, Friday.
What time does the Ab2 bus stop working?

Services on the Ab2 - Boulder / Denver Airport bus stop at 21:51 on Monday, Tuesday, Wednesday, Thursday, Friday.
Is there a Ab2 bus stop near me?

Click here to view the nearest Ab2 - Boulder / Denver Airport bus stop.

Ab2 (Boulder Buses)

The first stop of the Ab2 bus route is Denver Airport Station Gate 8 and the last stop is Boulder Junction at Depot Square Station Gate B5. Ab2 (Boulder / Denver Airport) is operational during on weekdays.

Additional information: Ab2 has 11 stops. The total trip duration for this route is approximately 66 minutes.

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Ab3 - Boulder / Denver Airport

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Last updated on August 23, 2026