Flight
SWA4129 8 Sep 2026
SWA4129, operated by Southwest Airlines, on 8 Sep 2026: Ronald Reagan Washington National (KDCA) to Gary/Chicago International Airport (KGYY). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KDCA RONALD REAGAN WASHINGTON NATIONAL → KGYY Gary/Chicago International Airport |
| Status | Completed (receiver network) |
| First seen airborne | 12:22 EDT |
| Last seen | 12:42 CDT |
| Duration | 1h 19m |
| Aircraft | N439WN |
| Max altitude | 36,000 ft |
| Distance tracked | 503 nm |
Punctuality, last 30 days
| Flights | 4 |
| On time | 2 (50%) |
| Average delay | +16 min |
| Worst delay | +27 min |
In the last 30 days SWA4129 departed on time (within 15 minutes) on 2 of 4 flights (50%), with an average departure delay of +16 min and a worst delay of +27 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.