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

Map

Monday to Friday

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

Timing points All stops

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 B	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

Timing points All stops

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 B	06:08 06:13p	07:09 07:14p	08:09 08:14p	09:09 09:14p	15:09 15:14p	16:09 16:14p	17:09 17:14p	18:19 18:24p	19:19 19:24p
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 p – "pick up only" – the vehicle will only stop to pick up passengers.

Last updated on March 21, 2026

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

All data is available in GTFS feed: regional-transportation-district

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 bus Route Map

PDF Version: Ab2 timetable, stops and map

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 and the total trip duration for this route is approximately 66 minutes.

See why over 2 million users trust and consider busmaps.com as the best public transport website. busmaps gives you Boulder Buses suggested routes, real-time bus tracker, line route maps in Boulder, and helps to find the closest Ab2 bus stops near you. No internet available? Download an offline PDF map and bus schedule for the Ab2 bus to take on your trip.

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