Flight
DAL637 21 May 2026
DAL637, operated by Delta Air Lines, on 21 May 2026: Chicago Ohare International (KORD) 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 | KORD CHICAGO OHARE INTERNATIONAL → KSEA SEATTLE TACOMA INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 19:00 CDT 20 May |
| Last seen | 20:58 PDT 20 May |
| Duration | 3h 57m |
| Aircraft | N916DU |
| Max altitude | 34,000 ft |
| Distance tracked | 1,491 nm |
Leg 2 of 3
PlaneTrack receiver network| Route | KSEA SEATTLE TACOMA INTERNATIONAL → KORD CHICAGO OHARE INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 11:01 PDT |
| Last seen | 16:24 CDT |
| Duration | 3h 23m |
| Aircraft | N922DZ |
| Max altitude | 35,000 ft |
| Distance tracked | 1,491 nm |
Leg 3 of 3estimated
PlaneTrack receiver network| Route | KORD CHICAGO OHARE INTERNATIONAL → KDPA DU PAGE |
| Status | Completed (receiver network) |
| First seen airborne | 18:34 CDT |
| Last seen | 18:58 CDT |
| Duration | 0h 23m |
| Aircraft | N922DZ |
| Max altitude | 32,000 ft |
| Distance tracked | 15 nm |
Punctuality, last 30 days
| Flights | 8 |
| On time | 0 (0%) |
| Average delay | +62 min |
| Worst delay | +152 min |
In the last 30 days DAL637 departed on time (within 15 minutes) on 0 of 8 flights (0%), with an average departure delay of +62 min and a worst delay of +152 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.