FF4
Flatiron Flyer
Bus
Timetable valid Sep 27, 2026 to Jan 2, 2027, from RTD's published schedule.
Departures from Boulder Junction at Depot Square Station Gate B3
All weekdays departures (8 trips)
- 8:13 AM
- 8:49 AM
- 9:34 AM
- 10:04 AM
- 4:14 PM
- 5:19 PM
- 6:09 PM
- 6:42 PM
When it runs · Weekdays
- First trip
- 8:13 AM
- Last trip
- 6:42 PM
| Time of day | How often |
|---|---|
| Early morning12:00 AM–6:00 AM | No service |
| Morning rush6:00 AM–9:00 AM | Every 41 min |
| Midday9:00 AM–3:00 PM | Every 200 min |
| Afternoon rush3:00 PM–7:00 PM | Every 50 min |
| Evening7:00 PM–10:00 PM | No service |
| Late night10:00 PM–3:00 AM | No service |
The Sunday schedule also runs on Nov 26, Nov 27, Dec 25, Jan 1.
Route map
Stops (14) · To Boulder Junction
- Civic Center Station Gate 8(Timepoint)
- 18th St & Glenarm Pl
- 18th St & Stout St(Timepoint)
- 20th St & Larimer St
- Park Ave W & Delgany St
- US 36 & Broomfield Station Gate L(Timepoint)
- US 36 & Flatiron Station Gate B(Timepoint)
- US 36 & McCaslin Station Gate D(Timepoint)
- US 36 & Table Mesa Station Gate E(Timepoint)
- 28th St & College Ave
- 28th St & Arapahoe Ave(Timepoint)
- 28th St & Canyon Blvd(Timepoint)
- Pearl St & 29th St
- Boulder Junction at Depot Square Station Gate B3(Timepoint)(Selected stop)
Full timetable · Weekdays · To Boulder Junction
Times at RTD's timepoints. A dash means that trip does not stop there.
Show all 8 trips
| Civic Center Station Gate 8 | 18th St & Stout St | US 36 & Broomfield Station Gate L | US 36 & Flatiron Station Gate B | US 36 & McCaslin Station Gate D | US 36 & Table Mesa Station Gate E | 28th St & Arapahoe Ave | 28th St & Canyon Blvd | Boulder Junction at Depot Square Station Gate B3 |
|---|---|---|---|---|---|---|---|---|
| 7:12 AM | 7:18 AM | 7:43 AM | 7:47 AM | 7:53 AM | 7:59 AM | 8:07 AM | 8:09 AM | 8:13 AM |
| 7:48 AM | 7:54 AM | 8:19 AM | 8:23 AM | 8:29 AM | 8:35 AM | 8:43 AM | 8:45 AM | 8:49 AM |
| 8:33 AM | 8:39 AM | 9:04 AM | 9:08 AM | 9:14 AM | 9:20 AM | 9:28 AM | 9:30 AM | 9:34 AM |
| 9:03 AM | 9:09 AM | 9:34 AM | 9:38 AM | 9:44 AM | 9:50 AM | 9:58 AM | 10:00 AM | 10:04 AM |
| 3:18 PM | 3:26 PM | 3:47 PM | 3:51 PM | 3:55 PM | 4:01 PM | 4:09 PM | 4:10 PM | 4:14 PM |
| 4:18 PM | 4:27 PM | 4:49 PM | 4:53 PM | 4:58 PM | 5:04 PM | 5:12 PM | 5:14 PM | 5:19 PM |
| 5:08 PM | 5:17 PM | 5:39 PM | 5:43 PM | 5:48 PM | 5:54 PM | 6:02 PM | 6:04 PM | 6:09 PM |
| 5:46 PM | 5:54 PM | 6:13 PM | 6:17 PM | 6:22 PM | 6:28 PM | 6:36 PM | 6:37 PM | 6:42 PM |
Plan your trip and pay
- RTD's page for route FF4 (live arrivals)(opens rtd-denver.com)
- RTD trip planner(opens rtd-denver.com)
- Fares and passes(opens rtd-denver.com)
- Accessibility on RTD(opens rtd-denver.com)
- Service alerts(opens rtd-denver.com)
- Denver transit map
Source: RTD GTFS feed Sep26-37243-12-13-20261009-141920. Live arrivals come from RTD's real-time feed on the transit map.