MBTA Route SL3 Chelsea Station - South Station
Bus Boston, MA19 stopsto Chelseato South Station
LIVE SERVICE STATUS
Checking the MBTA alerts feed…
Schedule summary
Computed from the MBTA GTFS feed (version Fall 2026, 2026-10-21T20:52:18+00:00, version D). Each row is the next day of that kind with service.
| Day | Direction | First | Last | Trips | Typical gap |
|---|---|---|---|---|---|
| WeekdayTue, Oct 27 | to Chelsea | 4:21 AM | 12:41 AM | 118 | ~10 min |
| to South Station | 4:50 AM | 12:58 AM | 116 | ~10 min | |
| SaturdaySat, Oct 31 | to Chelsea | 4:58 AM | 1:46 AM | 96 | ~12 min |
| to South Station | 5:27 AM | 1:16 AM | 94 | ~12 min | |
| SundaySun, Nov 1 | to Chelsea | 4:52 AM | 11:47 PM | 88 | ~13 min |
| to South Station | 5:28 AM | 12:19 AM | 89 | ~13 min |
Stops & times — today, Tue, Oct 27
To Chelsea · 9 stops
Departures from South Station today:
4:21 AM4:31 AM4:41 AM4:51 AM5:01 AM5:11 AM5:16 AM5:26 AM5:36 AM5:46 AM5:56 AM6:06 AM6:16 AM6:26 AM6:36 AM6:46 AM6:57 AM7:07 AM7:17 AM7:19 AM7:31 AM7:40 AM7:50 AM8:00 AM8:09 AM8:20 AM8:29 AM8:40 AM8:50 AM9:00 AM9:11 AM9:22 AM9:30 AM9:40 AM9:50 AM10:00 AM10:07 AM10:14 AM10:23 AM10:33 AM10:42 AM10:53 AM11:03 AM11:11 AM11:19 AM11:27 AM11:35 AM11:45 AM11:55 AM12:05 PM12:13 PM12:22 PM12:33 PM12:41 PM12:49 PM12:59 PM1:09 PM1:17 PM1:25 PM1:34 PM1:45 PM1:55 PM2:08 PM2:22 PM2:33 PM2:41 PM2:49 PM2:59 PM3:09 PM3:22 PM3:36 PM3:47 PM+ 46 more
- 1
South Station
First 4:21 AM · Last 12:41 AM (+1 day) · 118 scheduled departures
- 2
Courthouse
First 4:22 AM · Last 12:42 AM (+1 day) · 118 scheduled departures
- 3
World Trade Center
First 4:24 AM · Last 12:44 AM (+1 day) · 118 scheduled departures
- 4
Silver Line Way
First 4:25 AM · Last 12:45 AM (+1 day) · 118 scheduled departures
- 5
Airport
First 4:33 AM · Last 12:53 AM (+1 day) · 118 scheduled departures
- 6
Eastern Avenue
First 4:37 AM · Last 12:57 AM (+1 day) · 118 scheduled departures
- 7
Box District
First 4:38 AM · Last 12:59 AM (+1 day) · 118 scheduled departures
- 8
Bellingham Square
First 4:39 AM · Last 1:00 AM (+1 day) · 118 scheduled departures
- 9
Chelsea
First 4:43 AM · Last 1:05 AM (+1 day) · 118 scheduled departures
To South Station · 10 stops
Departures from Chelsea today:
4:50 AM5:00 AM5:10 AM5:20 AM5:30 AM5:40 AM5:50 AM6:00 AM6:10 AM6:20 AM6:31 AM6:39 AM6:48 AM6:59 AM7:08 AM7:18 AM7:28 AM7:37 AM7:48 AM7:57 AM8:08 AM8:18 AM8:28 AM8:39 AM8:50 AM8:58 AM9:08 AM9:18 AM9:28 AM9:37 AM9:48 AM9:58 AM10:08 AM10:17 AM10:28 AM10:38 AM10:46 AM10:54 AM11:02 AM11:10 AM11:20 AM11:30 AM11:40 AM11:48 AM11:57 AM12:08 PM12:16 PM12:24 PM12:34 PM12:44 PM12:52 PM1:00 PM1:09 PM1:20 PM1:30 PM1:40 PM1:49 PM1:59 PM2:07 PM2:15 PM2:25 PM2:35 PM2:48 PM3:02 PM3:13 PM3:21 PM3:29 PM3:39 PM3:50 PM4:03 PM4:17 PM4:27 PM+ 44 more
- 1
Chelsea
First 4:50 AM · Last 12:58 AM (+1 day) · 116 scheduled departures
- 2
Bellingham Square
First 4:51 AM · Last 12:59 AM (+1 day) · 116 scheduled departures
- 3
Box District
First 4:53 AM · Last 1:00 AM (+1 day) · 116 scheduled departures
- 4
Eastern Avenue
First 4:55 AM · Last 1:01 AM (+1 day) · 116 scheduled departures
- 5
Airport
First 4:59 AM · Last 1:04 AM (+1 day) · 116 scheduled departures
- 6
Congress St @ World Trade Center Sta
First 5:06 AM · Last 1:17 AM (+1 day) · 116 scheduled departures
- 7
Silver Line Way
First 5:08 AM · Last 1:18 AM (+1 day) · 116 scheduled departures
- 8
World Trade Center
First 5:10 AM · Last 12:49 AM (+1 day) · 114 scheduled departures
- 9
Courthouse
First 5:11 AM · Last 12:50 AM (+1 day) · 114 scheduled departures
- 10
South Station
First 5:16 AM · Last 12:56 AM (+1 day) · 114 scheduled departures
MBTA Route SL3 Chelsea Station - South Station — questions
What time does MBTA Route SL3 Chelsea Station - South Station run on weekdays?
On a typical weekday (Tue, Oct 27), the first MBTA Route SL3 Chelsea Station - South Station departure is 4:21 AM and the last is 12:41 AM, running roughly every 10 minutes. Times are the published schedule from the MBTA GTFS feed (version Fall 2026, 2026-10-21T20:52:18+00:00, version D).
Where does MBTA Route SL3 Chelsea Station - South Station go?
MBTA Route SL3 Chelsea Station - South Station serves 19 stops: South Station → Chelsea (to Chelsea); Chelsea → South Station (to South Station). The full ordered stop list with first and last departure times is on this page.
Does MBTA Route SL3 Chelsea Station - South Station run on weekends?
Yes — Saturday service runs 190 trips; Sunday service runs 177 trips. See the schedule summary for first and last times.
Is MBTA Route SL3 Chelsea Station - South Station delayed or on detour right now?
The live service status section at the top of this page reads MBTA's realtime alerts feed — detours, suspensions and delays for this route appear there as the agency posts them. Everything else on this page is the published timetable.
Can I watch MBTA Route SL3 Chelsea Station - South Station live on a map?
Yes — the WorldEye globe carries MBTA's live vehicle positions on its transit layer. Open the live map from this page, and tap any vehicle or stop for its next arrivals. It's free, no signup.
More Bus routes
Times on this page are the published schedule from MBTA's GTFS feed (version Fall 2026, 2026-10-21T20:52:18+00:00, version D); live status comes from the agency's realtime alerts feed and can differ. Data: MBTA. Long name as published: “Chelsea Station - South Station”. WorldEye is a free viewer — for fares, passes and official notices, see MBTA's own site.
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