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(UA) United Airlines 4257 Flight Tracker

Flight Status

UA 4257
United Airlines
IAD
Dulles
TYS
Knoxville
Operated by CommuteAir on behalf of United Airlines
Scheduled
Delayed by 1h
IAD
Dulles, VA, US
Washington Dulles International Airport
Flight Departure Times
01-Feb-2026
Scheduled
09:00 EST
Estimated
10:00 EST
Terminal
N/A
Gate
A5A
TYS
Knoxville, TN, US
Knoxville McGhee Tyson Airport
Flight Arrival Times
01-Feb-2026
Scheduled
10:57 EST
Estimated
11:57 EST
Terminal
N/A
Gate
11
Baggage
3
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Additional Details

This Flight Also Marketed As

Codeshare Airline

Air Canada
Avianca
Copa Airlines

Flight Number

(AC) 4741(AV) 2346(CM) 2237

Aircraft Equipment

Code

E45

Description

Embraer EMB-145XR

Past and Upcoming Flights

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01-Feb
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Flights for Wednesday, 28-Jan-2026
Departure Time
Origin
 
Destination
Arrival Time
09:00 EST
IAD
Dulles
TYS
Knoxville
10:57 EST
Flights for Thursday, 29-Jan-2026
Departure Time
Origin
 
Destination
Arrival Time
09:00 EST
IAD
Dulles
TYS
Knoxville
10:57 EST
Flights for Friday, 30-Jan-2026
Departure Time
Origin
 
Destination
Arrival Time
09:00 EST
IAD
Dulles
TYS
Knoxville
10:57 EST
Flights for Saturday, 31-Jan-2026
Departure Time
Origin
 
Destination
Arrival Time
09:00 EST
IAD
Dulles
TYS
Knoxville
10:57 EST
Flights for Sunday, 01-Feb-2026
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Flights for Monday, 02-Feb-2026
Departure Time
Origin
 
Destination
Arrival Time
09:00 EST
IAD
Dulles
TYS
Knoxville
10:57 EST
Flights for Tuesday, 03-Feb-2026
Departure Time
Origin
 
Destination
Arrival Time
09:00 EST
IAD
Dulles
TYS
Knoxville
10:57 EST

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