Auburn / Bus
King County Metro 121 schedule and full timetable
121 · America/Los_Angeles
Selected branch: Downtown Seattle Via SR-509 · 14 stops. Service day: Wednesday, November 4, 2026.
Wed, Nov 48 published tripsThu, Nov 58 published tripsFri, Nov 68 published tripsSat, Nov 70 published tripsSun, Nov 80 published tripsMon, Nov 98 published tripsTue, Nov 108 published trips
King County Metro 121 full stop-by-trip timetable
All stops on the selected branch, November 4, 2026. 8 fixed scheduled trips; showing 1–8. Frequency service is listed in the boarding schedule below. A dash means the agency supplies no time.
| Stop / trip | Trip 1 | Trip 2 | Trip 3 | Trip 4 | Trip 5 | Trip 6 | Trip 7 | Trip 8 |
|---|---|---|---|---|---|---|---|---|
| Burien Transit Center - Bay 5 | 6:15 AM | 7:00 AM | 7:45 AM | 8:30 AM | 4:21 PM | 5:06 PM | 5:51 PM | 6:36 PM |
| Sr 509 & S 128th St | 6:19 AMEstimated | 7:05 AMEstimated | 7:50 AMEstimated | 8:35 AMEstimated | 4:26 PMEstimated | 5:11 PMEstimated | 5:56 PMEstimated | 6:40 PMEstimated |
| East Marginal Way S & S Lucile St | 6:30 AMEstimated | 7:18 AMEstimated | 8:03 AMEstimated | 8:48 AMEstimated | 4:38 PMEstimated | 5:23 PMEstimated | 6:08 PMEstimated | 6:52 PMEstimated |
| East Marginal Way S & S Hudson St | 6:30 AMEstimated | 7:19 AMEstimated | 8:04 AMEstimated | 8:49 AMEstimated | 4:39 PMEstimated | 5:23 PMEstimated | 6:08 PMEstimated | 6:53 PMEstimated |
| East Marginal Way S & S Alaska St | 6:31 AMEstimated | 7:19 AMEstimated | 8:04 AMEstimated | 8:49 AMEstimated | 4:39 PMEstimated | 5:24 PMEstimated | 6:09 PMEstimated | 6:53 PMEstimated |
| East Marginal Way S & Diagonal Ave S | 6:31 AMEstimated | 7:20 AMEstimated | 8:05 AMEstimated | 8:50 AMEstimated | 4:40 PMEstimated | 5:24 PMEstimated | 6:09 PMEstimated | 6:54 PMEstimated |
| East Marginal Way S & S Idaho St | 6:32 AMEstimated | 7:20 AMEstimated | 8:05 AMEstimated | 8:50 AMEstimated | 4:40 PMEstimated | 5:25 PMEstimated | 6:10 PMEstimated | 6:54 PMEstimated |
| Alaskan Way S & S Jackson St | 6:37 AMEstimated | 7:27 AMEstimated | 8:12 AMEstimated | 8:57 AMEstimated | 4:47 PMEstimated | 5:31 PMEstimated | 6:16 PMEstimated | 7:00 PMEstimated |
| Alaskan Way & Columbia St | 6:38 AMEstimated | 7:28 AMEstimated | 8:13 AMEstimated | 8:58 AMEstimated | 4:48 PMEstimated | 5:32 PMEstimated | 6:17 PMEstimated | 7:01 PMEstimated |
| 3rd Ave & Madison St | 6:39 AM | 7:29 AM | 8:14 AM | 8:59 AM | 4:49 PM | 5:33 PM | 6:18 PM | 7:02 PM |
| 3rd Ave & Union St | 6:42 AM | 7:32 AM | 8:17 AM | 9:02 AM | 4:52 PM | 5:36 PM | 6:21 PM | 7:05 PM |
| 3rd Ave & Pine St | 6:43 AMEstimated | 7:33 AMEstimated | 8:18 AMEstimated | 9:03 AMEstimated | 4:53 PMEstimated | 5:37 PMEstimated | 6:22 PMEstimated | 7:06 PMEstimated |
| 3rd Ave & Virginia St | 6:45 AMEstimated | 7:35 AMEstimated | 8:20 AMEstimated | 9:05 AMEstimated | 4:55 PMEstimated | 5:39 PMEstimated | 6:24 PMEstimated | 7:08 PMEstimated |
| 3rd Ave & Bell St | 6:47 AM | 7:37 AM | 8:22 AM | 9:07 AM | 4:57 PM | 5:41 PM | 6:26 PM | 7:10 PM |
Every departure from Burien Transit Center - Bay 5
For the selected service day and branch. After-midnight times retain their service-day association; “+1 day” means the following calendar day.
| Departure / window | Destination | Boarding notes |
|---|---|---|
| 6:15 AM | Downtown Seattle Via SR-509 | Scheduled |
| 7:00 AM | Downtown Seattle Via SR-509 | Scheduled |
| 7:45 AM | Downtown Seattle Via SR-509 | Scheduled |
| 8:30 AM | Downtown Seattle Via SR-509 | Scheduled |
| 4:21 PM | Downtown Seattle Via SR-509 | Scheduled |
| 5:06 PM | Downtown Seattle Via SR-509 | Scheduled |
| 5:51 PM | Downtown Seattle Via SR-509 | Scheduled |
| 6:36 PM | Downtown Seattle Via SR-509 | Scheduled |
More King County Metro travel information
Published King County Metro schedule
Imported Oct 24, 2026 · 04:37 UTC · Service dates 2026-08-29 through 2027-12-31. See data status
Schedule data published by King County Metro. Feed discovery and cached source archives from MobilityData. Source details ↗