Flight
SWA3521 26 Apr 2026
SWA3521, operated by Southwest Airlines, on 26 Apr 2026: Chicago Midway International (KMDW) to Seattle Tacoma International (KSEA), 3 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 3
PlaneTrack receiver network| Route | KMDW CHICAGO MIDWAY INTERNATIONAL → KSEA SEATTLE TACOMA INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 10:37 CDT |
| Last seen | 12:30 PDT |
| Duration | 3h 52m |
| Aircraft | N8674B |
| Max altitude | 38,000 ft |
| Distance tracked | 1,502 nm |
Leg 2 of 3
PlaneTrack receiver network| Route | KSEA SEATTLE TACOMA INTERNATIONAL → KLAS MC CARRAN INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 13:59 PDT |
| Last seen | 16:02 PDT |
| Duration | 2h 02m |
| Aircraft | N8674B |
| Max altitude | 37,000 ft |
| Distance tracked | 753 nm |
Leg 3 of 3estimated
PlaneTrack receiver network| Route | Route not recorded |
| Status | Completed (receiver network) |
| First seen airborne | 23:29Z |
| Last seen | 23:58Z |
| Duration | 0h 28m |
| Aircraft | N8674B |
Punctuality, last 30 days
| Flights | 6 |
| On time | 4 (67%) |
| Average delay | -203 min |
| Worst delay | +81 min |
In the last 30 days SWA3521 departed on time (within 15 minutes) on 4 of 6 flights (67%), with an average departure delay of -203 min and a worst delay of +81 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.