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UAL2644

PHL → DEN · Airbus A321 Neo · United Airlines

Flight

Status
Incomplete (signal lost)
Departure
Philadelphia International Airport (PHL) — Philadelphia, United States
Departed
2026-09-25 20:09 UTC
Arrival
Denver International Airport (DEN) — Denver, United States (predicted)
Distance flown
3268 km
Straight-line distance
2500 km
Approach distance
18 km

Aircraft

Registration
N44501
Type
Airbus A321 Neo
Seats
200 total (20 Business, 180 Economy)

Altitude & speed

Max altitude
34,025 ft
Max ground speed
466 kt
Tracked
4h 16m · 3,257 km
Altitude (ft, max 34,025)
018,37436,7470m1h 0m2h 0m3h 0m4h 0m
Ground speed (kt, max 466)
02525030m1h 0m2h 0m3h 0m4h 0m
Altitude (ft, max 34,025)
018,37436,7470m2h 0m4h 0m
Ground speed (kt, max 466)
02525030m2h 0m4h 0m

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

United Airlines (UAL)

Latest flights

DepartedFlightRouteRegAircraftStatusDistance
2026-10-03 02:19 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N37281 Boeing 737-800 In progress ~1247 km est.
2026-10-02 20:02 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N44522 Airbus A321 Neo Completed 2646 km
2026-10-02 01:56 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N14230 Boeing 737-800 Incomplete (signal lost) 1297 km
2026-10-01 20:11 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N17414 Boeing 737 MAX 9 Completed 2703 km
2026-10-01 02:27 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N27246 Boeing 737-800 Incomplete (signal lost) 1285 km
2026-09-30 20:19 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N37563 Boeing 737 MAX 9 Completed 2673 km
2026-09-30 01:27 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N12221 Boeing 737-800 Incomplete (signal lost) 1240 km
2026-09-29 19:52 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N27463 Boeing 737 MAX 9 Completed 2593 km
2026-09-29 01:41 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N76522 Boeing 737-800 Incomplete (signal lost) 1284 km
2026-09-28 20:07 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N14546 Airbus A321 Neo Completed 2596 km
2026-09-28 16:55 UTC UAL2644 ORD → PHL
Chicago → Philadelphia
 N14546 Airbus A321 Neo Completed 1201 km
2026-09-28 02:48 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N77295 Boeing 737-800 Incomplete (signal lost) 1281 km
2026-09-27 20:06 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N17403 Boeing 737 MAX 9 Completed 2597 km
2026-09-27 01:53 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N17460 Boeing 737 MAX 9 Completed (landing presumed) 1294 km
2026-09-26 20:09 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N69818 Boeing 737-900 Completed 2606 km
2026-09-26 17:10 UTC UAL2644 ORD → PHL
Chicago → Philadelphia
 N69818 Boeing 737-900 Completed 1151 km
2026-09-26 02:30 UTC UAL2644 GCK → DEN
Garden City → Denver
 N44501 Airbus A321 Neo Completed 774 km
2026-09-25 20:09 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N44501 Airbus A321 Neo Incomplete (signal lost) 3268 km
2026-09-25 04:19 UTC UAL2644 DEN → UDD
Denver → Palm Springs
 N76504 Boeing 737-800 Incomplete (signal lost) 1292 km
2026-09-24 20:06 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N17564 Boeing 737 MAX 9 Completed 2655 km
2026-09-24 01:35 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N77539 Boeing 737-800 Incomplete (signal lost) 1277 km
2026-09-23 19:57 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N77426 Boeing 737 MAX 9 Completed 2591 km
2026-09-23 01:59 UTC UAL2644 DEN → UDD
Denver → Palm Springs
 N14235 Boeing 737-800 Incomplete (signal lost) 1295 km
2026-09-22 20:29 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N77580 Boeing 737 MAX 9 Completed 2700 km
2026-09-22 01:40 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N17589 Boeing 737 MAX 9 Completed 2573 km
2026-09-21 01:38 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N73278 Boeing 737-800 Incomplete (signal lost) 1297 km
2026-09-20 20:03 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N17565 Boeing 737 MAX 9 Completed 2624 km
2026-09-19 23:14 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N27439 Boeing 737 MAX 9 Completed 3079 km
2026-09-19 02:03 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N77518 Boeing 737-800 Incomplete (signal lost) 1350 km
2026-09-18 20:14 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N37447 Boeing 737 MAX 9 Completed 3158 km
2026-09-17 22:25 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N27419 Boeing 737 MAX 9 Completed 2794 km
2026-09-17 01:54 UTC UAL2644 DEN → ?
Denver → ?
 N77525 Boeing 737-800 Incomplete (signal lost) 1383 km
2026-09-16 19:45 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N47412 Boeing 737 MAX 9 Completed 2718 km
2026-09-15 21:25 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N17595 Boeing 737 MAX 9 Completed 2729 km
2026-09-14 21:13 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N77584 Boeing 737 MAX 9 Completed 2734 km
2026-09-14 02:12 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N76522 Boeing 737-800 Incomplete (signal lost) 1290 km
2026-09-13 20:11 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N27526 Boeing 737 MAX 9 Completed 2849 km
2026-09-13 01:18 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N37298 Boeing 737-800 Incomplete (signal lost) 1341 km
2026-09-12 19:46 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N37472 Boeing 737 MAX 9 Completed 2782 km
2026-09-12 01:56 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N73259 Boeing 737-800 Incomplete (signal lost) 1383 km
2026-09-11 19:49 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N37551 Boeing 737 MAX 9 Completed 2744 km
2026-09-11 01:12 UTC UAL2644 DEN → PSP
Denver → Palm Springs
 N76533 Boeing 737-800 Completed 1330 km
2026-09-10 19:51 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N17596 Boeing 737 MAX 9 Completed 2823 km
2026-09-10 01:25 UTC UAL2644 DEN → UDD
Denver → Palm Springs
 N73275 Boeing 737-800 Incomplete (signal lost) 1337 km
2026-09-09 19:47 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N77582 Boeing 737 MAX 9 Completed 2701 km
2026-09-08 01:32 UTC UAL2644 DEN → UDD
Denver → Palm Springs
 N77295 Boeing 737-800 Incomplete (signal lost) 1220 km
2026-09-07 20:12 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N37537 Boeing 737 MAX 9 Completed 2753 km
2026-09-07 01:31 UTC UAL2644 DEN → UDD
Denver → Palm Springs
 N37298 Boeing 737-800 Incomplete (signal lost) 1333 km
2026-09-06 19:55 UTC UAL2644 PHL → DEN
Philadelphia → Denver
 N17459 Boeing 737 MAX 9 Completed 2798 km
2026-09-06 01:10 UTC UAL2644 DEN → UDD
Denver → Palm Springs
 N36207 Boeing 737-800 Incomplete (signal lost) 1330 km

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