Flight
SWA3877 30 Sep 2026
SWA3877, operated by Southwest Airlines, on 30 Sep 2026: Chicago Midway International (KMDW) to Lambert St Louis International (KSTL), 3 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 3
FAA SWIM schedule| Route | KMDW CHICAGO MIDWAY INTERNATIONAL → KSTL LAMBERT ST LOUIS INTERNATIONAL |
| Status | Completed, departed on time (+8 min) |
| Scheduled departure | 10:10 CDT |
| Actual departure | 10:18 CDT on time |
| Actual arrival | 11:02 CDT |
| Duration | 0h 44m |
| Aircraft | N950WN B737 |
| Max altitude | 28,000 ft |
| Distance tracked | 218 nm |
Leg 2 of 3
FAA SWIM schedule| Route | KSTL LAMBERT ST LOUIS INTERNATIONAL → KPHX PHOENIX SKY HARBOR INTERNATIONAL |
| Status | Completed, departure delayed +18 min |
| Scheduled departure | 11:55 CDT |
| Actual departure | 12:13 CDT delayed +18 min |
| Actual arrival | 12:59 MST |
| Duration | 2h 46m |
| Aircraft | N950WN B737 |
| Max altitude | 36,025 ft |
| Distance tracked | 1,094 nm |
Leg 3 of 3
FAA SWIM schedule| Route | KPHX PHOENIX SKY HARBOR INTERNATIONAL → KSMF SACRAMENTO INTERNATIONAL |
| Status | Completed, departure delayed +20 min |
| Scheduled departure | 13:45 MST |
| Actual departure | 14:05 MST delayed +20 min |
| Actual arrival | 15:40 PDT |
| Duration | 1h 35m |
| Aircraft | N950WN B737 |
| Max altitude | 38,000 ft |
| Distance tracked | 561 nm |
Punctuality, last 30 days
| Flights | 11 |
| On time | 3 (27%) |
| Average delay | +27 min |
| Worst delay | +82 min |
In the last 30 days SWA3877 departed on time (within 15 minutes) on 3 of 11 flights (27%), with an average departure delay of +27 min and a worst delay of +82 min.
Schedule, departure and arrival times from the FAA SWIM feed; aircraft, altitude and distance from the PlaneTrack receiver network. On time means a departure within 15 minutes of schedule.