Flight
DAL639 10 Sep 2026
DAL639, operated by Delta Air Lines, on 10 Sep 2026: Los Angeles International (KLAX) to General Edward Lawrence Logan International (KBOS). Scheduled and actual times are local to each airport (hover for UTC).
Flightestimated
PlaneTrack receiver network| Route | KLAX LOS ANGELES INTERNATIONAL → KBOS GENERAL EDWARD LAWRENCE LOGAN INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 06:55 PDT |
| Last seen | 15:06 EDT |
| Duration | 5h 11m |
| Aircraft | N721TW |
| Max altitude | 37,025 ft |
| Distance tracked | 2,264 nm |
Punctuality, last 30 days
| Flights | 7 |
| On time | 2 (29%) |
| Average delay | +55 min |
| Worst delay | +193 min |
In the last 30 days DAL639 departed on time (within 15 minutes) on 2 of 7 flights (29%), with an average departure delay of +55 min and a worst delay of +193 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.