UA4257

IAD → TYS · EMBRAER EMB-145XR · CommutAir

For travellers

Departure · Washington, DC (IAD)

Gate A6B

Scheduled 02 Oct 09:00 · Departed 02 Oct 08:46 · early

Board status: InAir

Airborne since 02 Oct 09:14 (ADS-B)

Board data from mwaa, updated 274 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

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)

Ground speed (kt, max 423)

Altitude (ft, max 24,025)

Ground speed (kt, max 423)

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

Departed	Flight	Route	Reg	Aircraft	Status	Distance
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

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