FF4
Flatiron Flyer
Bus
Timetable valid Sep 27, 2026 to Jan 2, 2027, from RTD's published schedule.
Departures from 18th St & Glenarm Pl
All weekdays departures (8 trips)
- 7:15 AM
- 7:51 AM
- 8:36 AM
- 9:06 AM
- 3:22 PM
- 4:23 PM
- 5:13 PM
- 5:50 PM
This stop sits between RTD's timepoints, so these times are estimated from the timetable and may be a minute or two off.
Live arrivals on the mapOther routes at this stop
When it runs · Weekdays
- First trip
- 7:15 AM
- Last trip
- 5:50 PM
| Time of day | How often |
|---|---|
| Early morning12:00 AM–6:00 AM | No service |
| Morning rush6:00 AM–9:00 AM | Every 36 min |
| Midday9:00 AM–3:00 PM | One trip |
| 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(Selected stop)
- 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)
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.