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UCA4257

IAD → TYS · EMBRAER EMB-145XR · CommutAir

For travellers

Departure · Washington, DC (IAD)

Gate A6B
Scheduled 09:00 · Departed 08:46 · early
Board status: InAir
Airborne since 09:14 (ADS-B)

Board data from mwaa, updated 36 min ago; times local to each airport.

Flight

Status
Completed
Arrival confirmed via
ADS-B (ground reading)
Departure
Washington Dulles International Airport (IAD) — Washington, DC, United States
Scheduled departure
2026-10-02 13:00 UTC
Departed
2026-10-02 13:14 UTC
Arrival
McGhee Tyson Airport (TYS) — Knoxville, United States
Also flies as
UA4257
Codeshares
AC4741, AV2346, CM2237
Distance flown
692 km
Straight-line distance
674 km
Approach distance
53 km

Aircraft

Registration
N21197
Type
EMBRAER EMB-145XR
Seats
50 total (44 Economy, 6 Economy Plus)

Altitude & speed

Max altitude
24,025 ft
Max ground speed
423 kt
Tracked
1h 4m · 688 km
Altitude (ft, max 24,025)
012,97425,9470m30m1h 0m
Ground speed (kt, max 423)
02284570m30m1h 0m
Altitude (ft, max 24,025)
012,97425,9470m1h 0m
Ground speed (kt, max 423)
02284570m1h 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

CommutAir (UCA)

Latest flights

DepartedFlightRouteRegAircraftStatusDistance
2026-10-02 13:14 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N21197 EMBRAER EMB-145XR Completed 692 km
2026-10-01 13:17 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N17146 EMBRAER EMB-145XR Completed 706 km
2026-09-30 13:11 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N13202 EMBRAER EMB-145XR Completed 693 km
2026-09-29 13:11 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14186 EMBRAER EMB-145XR Completed (landing presumed) 687 km
2026-09-28 13:14 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14186 EMBRAER EMB-145XR Completed (landing presumed) 730 km
2026-09-27 12:52 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14153 EMBRAER EMB-145XR Completed (landing presumed) 733 km
2026-09-26 12:49 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N17196 EMBRAER EMB-145XR Completed (landing presumed) 724 km
2026-09-25 13:19 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N21144 EMBRAER EMB-145XR Completed (landing presumed) 740 km
2026-09-24 13:07 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14198 EMBRAER EMB-145XR Completed (landing presumed) 742 km
2026-09-21 13:10 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14186 EMBRAER EMB-145XR Completed (landing presumed) 694 km
2026-09-20 12:58 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N21144 EMBRAER EMB-145XR Completed 759 km
2026-09-19 13:19 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N21144 EMBRAER EMB-145XR Completed 722 km
2026-09-18 13:13 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N12136 EMBRAER EMB-145XR Completed 746 km
2026-09-17 13:13 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N12167 EMBRAER EMB-145XR Completed (landing presumed) 736 km
2026-09-14 13:26 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N12142 EMBRAER EMB-145XR Completed 735 km
2026-09-13 15:07 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N12167 EMBRAER EMB-145XR Completed (landing presumed) 784 km
2026-09-12 13:14 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14177 EMBRAER EMB-145XR Completed 743 km
2026-09-07 12:57 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N11199 EMBRAER EMB-145XR Completed 780 km
2026-09-06 12:55 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N11165 EMBRAER EMB-145XR Completed (landing presumed) 727 km
2026-09-05 13:04 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14174 EMBRAER EMB-145XR Completed 740 km
2026-09-04 12:54 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14162 EMBRAER EMB-145XR Completed 775 km
2026-09-03 12:56 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N23139 EMBRAER EMB-145XR Completed 719 km
2026-08-31 13:17 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N16178 EMBRAER EMB-145XR Completed 796 km
2026-08-30 15:46 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14162 EMBRAER EMB-145XR Completed 723 km
2026-08-29 13:21 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N21154 EMBRAER EMB-145XR Completed 790 km
2026-08-28 18:24 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N27190 EMBRAER EMB-145XR Completed 792 km
2026-08-27 12:52 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N16170 EMBRAER EMB-145XR Completed (landing presumed) 784 km
2026-08-24 13:15 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N12136 EMBRAER EMB-145XR Completed 725 km
2026-08-23 13:00 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N24128 EMBRAER EMB-145XR Completed 968 km
2026-08-21 12:57 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14162 EMBRAER EMB-145XR Completed 970 km
2026-08-17 13:16 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N16183 EMBRAER EMB-145XR Completed 1995 km
2026-08-16 12:51 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14198 EMBRAER EMB-145XR Completed 1409 km
2026-08-14 13:06 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N14153 EMBRAER EMB-145XR Completed ~1624 km est. (1016 km recorded)
2026-08-13 13:12 UTC UCA4257 IAD → TYS
Washington, DC → Knoxville
 N17146 EMBRAER EMB-145XR Completed 898 km

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