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UAL644

DFW → DEN · Boeing 737-800 · United Airlines

For travellers

Departure · Dallas-Fort Worth (DFW)

Terminal E · Gate E8
Scheduled 21 Sep 08:53 · Departed 21 Sep 10:07 · +74 min
Board status: Departed
Airborne since 21 Sep 10:31 (ADS-B)

Board data from dfw, updated 16120 min ago; times local to each airport.

Flight

Status
Completed
Arrival confirmed via
ADS-B (callsign change)
Departure
Dallas Fort Worth International Airport (DFW) — Dallas-Fort Worth, United States
Scheduled departure
2026-09-21 13:53 UTC
Departed
2026-09-21 15:31 UTC
Arrival
Denver International Airport (DEN) — Denver, United States
Also flies as
UA644
Codeshares
AC5307
Distance flown
1129 km
Straight-line distance
1032 km
Approach distance
57 km

Aircraft

Registration
N79521
Type
Boeing 737-800
Seats
166 total (102 Economy, 48 Economy Plus, 16 First)
CO2 (EMEP est., total)
26.9 t (223 kg/pax Business, 156 kg/pax Economy)

Altitude & speed

Max altitude
32,025 ft
Max ground speed
453 kt
Tracked
1h 41m · 1,116 km
Altitude (ft, max 32,025)
017,29434,5870m30m1h 0m1h 30m
Ground speed (kt, max 453)
02454890m30m1h 0m1h 30m
Altitude (ft, max 32,025)
017,29434,5870m1h 0m
Ground speed (kt, max 453)
02454890m1h 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
2026-10-02 17:47 UTC UAL644 DEN → PDX
Denver → Portland
 N24508 Airbus A321 Neo Completed 1670 km
2026-10-02 11:47 UTC UAL644 LGA → DEN
New York → Denver
 N14530 Airbus A321 Neo Completed 2702 km
2026-10-01 17:39 UTC UAL644 DEN → PDX
Denver → Portland
 N14559 Airbus A321 Neo Completed 1669 km
2026-10-01 11:21 UTC UAL644 LGA → DEN
New York → Denver
 N24505 Airbus A321 Neo Completed 2758 km
2026-09-30 17:35 UTC UAL644 DEN → PDX
Denver → Portland
 N64572 Airbus A321 Neo Completed (landing confirmed by airport data) 1624 km
2026-09-30 11:42 UTC UAL644 LGA → DEN
New York → Denver
 N14544 Airbus A321 Neo Completed 2760 km
2026-09-29 17:40 UTC UAL644 DEN → PDX
Denver → Portland
 N14549 Airbus A321 Neo Completed 1691 km
2026-09-29 12:33 UTC UAL644 LGA → DEN
New York → Denver
 N14539 Airbus A321 Neo Completed 2748 km
2026-09-28 17:36 UTC UAL644 DEN → PDX
Denver → Portland
 N14518 Airbus A321 Neo Completed 1680 km
2026-09-28 11:39 UTC UAL644 LGA → DEN
New York → Denver
 N14502 Airbus A321 Neo Completed 2684 km
2026-09-27 17:45 UTC UAL644 DEN → PDX
Denver → Portland
 N14559 Airbus A321 Neo Completed 1624 km
2026-09-27 12:33 UTC UAL644 LGA → DEN
New York → Denver
 N54558 Airbus A321 Neo Completed 2663 km
2026-09-26 18:00 UTC UAL644 DEN → PDX
Denver → Portland
 N34547 Airbus A321 Neo Completed 1615 km
2026-09-26 11:57 UTC UAL644 LGA → DEN
New York → Denver
 N14530 Airbus A321 Neo Completed 2637 km
2026-09-25 17:28 UTC UAL644 DEN → PDX
Denver → Portland
 N74532 Airbus A321 Neo Completed 1625 km
2026-09-25 11:47 UTC UAL644 LGA → DEN
New York → Denver
 N14565 Airbus A321 Neo Completed 2695 km
2026-09-24 17:49 UTC UAL644 DEN → PDX
Denver → Portland
 N14509 Airbus A321 Neo Completed 1668 km
2026-09-24 11:52 UTC UAL644 LGA → DEN
New York → Denver
 N24519 Airbus A321 Neo Completed 2741 km
2026-09-23 17:52 UTC UAL644 DEN → PDX
Denver → Portland
 N14515 Airbus A321 Neo Completed 1626 km
2026-09-23 14:17 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N37252 Boeing 737-800 Completed 1128 km
2026-09-22 17:35 UTC UAL644 DEN → PDX
Denver → Portland
 N14503 Airbus A321 Neo Completed 1675 km
2026-09-22 14:39 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N14235 Boeing 737-800 Completed 1176 km
2026-09-21 17:37 UTC UAL644 DEN → PDX
Denver → Portland
 N24513 Airbus A321 Neo Completed 1634 km
2026-09-21 15:31 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N79521 Boeing 737-800 Completed 1129 km
2026-09-20 17:27 UTC UAL644 DEN → PDX
Denver → Portland
 N74532 Airbus A321 Neo Completed 1699 km
2026-09-20 14:11 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N76269 Boeing 737-800 Completed 1197 km
2026-09-19 17:39 UTC UAL644 DEN → PDX
Denver → Portland
 N14576 Airbus A321 Neo Completed 1750 km
2026-09-19 15:45 UTC UAL644 DEN → DEN
Denver → Denver
 N823UA Airbus A319 Completed ~4 km est. (3 km recorded)
2026-09-19 13:51 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N823UA Airbus A319 Completed 1235 km
2026-09-18 17:52 UTC UAL644 DEN → PDX
Denver → Portland
 N14541 Airbus A321 Neo Completed 1948 km
2026-09-18 14:22 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N87512 Boeing 737-800 Completed 1222 km
2026-09-17 17:31 UTC UAL644 DEN → PDX
Denver → Portland
 N14520 Airbus A321 Neo Completed 1755 km
2026-09-17 14:05 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N33266 Boeing 737-800 Completed 1224 km
2026-09-16 17:31 UTC UAL644 DEN → PDX
Denver → Portland
 N24573 Airbus A321 Neo Completed 1727 km
2026-09-16 14:13 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N35260 Boeing 737-800 Completed 1204 km
2026-09-15 14:57 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N14242 Boeing 737-800 Completed 1638 km
2026-09-14 17:29 UTC UAL644 DEN → PDX
Denver → Portland
 N14527 Airbus A321 Neo Completed 1742 km
2026-09-14 14:11 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N86534 Boeing 737-800 Completed 1629 km
2026-09-13 17:51 UTC UAL644 DEN → PDX
Denver → Portland
 N14565 Airbus A321 Neo Completed 1787 km
2026-09-13 14:23 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N77538 Boeing 737-800 Completed 1272 km
2026-09-12 17:41 UTC UAL644 DEN → PDX
Denver → Portland
 N24537 Airbus A321 Neo Completed 1709 km
2026-09-12 14:04 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N881UA Airbus A319 Completed 1250 km
2026-09-11 17:25 UTC UAL644 DEN → PDX
Denver → Portland
 N14548 Airbus A321 Neo Completed 1758 km
2026-09-11 14:22 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N77537 Boeing 737-800 Completed 1297 km
2026-09-10 19:26 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N17233 Boeing 737-800 Completed 1708 km
2026-09-09 17:26 UTC UAL644 DEN → PDX
Denver → Portland
 N14504 Airbus A321 Neo Completed 1732 km
2026-09-09 14:29 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N76515 Boeing 737-800 Completed 1272 km
2026-09-07 17:25 UTC UAL644 DEN → PDX
Denver → Portland
 N14554 Airbus A321 Neo Completed 1734 km
2026-09-07 14:09 UTC UAL644 DFW → DEN
Dallas-Fort Worth → Denver
 N87513 Boeing 737-800 Completed 1174 km
2026-09-06 17:52 UTC UAL644 DEN → PDX
Denver → Portland
 N14504 Airbus A321 Neo Completed 1725 km

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