(UA) United Airlines 4257 Flight Details
On time | Scheduled
Departure
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
25-Feb-2026
Scheduled
09:00
EST
Estimated
09:00
EST
Total Departure Delay: -
Flight Runway Times
25-Feb-2026
Scheduled
09:21
EST
Estimated
09:21
EST
Runway Delay: -
Terminal
-
Gate
A5B
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 49m
Arrival
TYS
Knoxville McGhee Tyson Airport, TN, US
Flight Gate Times
25-Feb-2026
Scheduled
10:49
EST
Estimated
10:49
EST
Total Arrival Delay: -
Flight Runway Times
25-Feb-2026
Scheduled
10:45
EST
Estimated
10:45
EST
Runway Delay: -
Terminal
-
Gate
-
Baggage Claim
-
Tail Number
N11165
Flight Time
Estimated
1h 49m
Flight Notes
Operated by CommuteAir on behalf of United Airlines
Also marketed as (AC) Air Canada 4741, (AV) Avianca 2346, (CM) Copa Airlines 2237
Event Timeline
Date
Event
Data Updated
25 Feb
10:31
05:31
05:31
Gate Adjustment
Departure Gate changed from A4A to A5B
25 Feb
10:27
05:27
05:27
Time Adjustment
Estimated Runway Departure changed to Feb-25-2026 9:21 AM
Estimated Runway Arrival changed to Feb-25-2026 10:45 AM
24 Feb
19:46
14:46
14:46
Gate Adjustment
Departure Gate changed from A4E to A4A
24 Feb
17:03
12:03
12:03
Equipment Adjustment
Tail Number changed from N31131 to N11165
24 Feb
14:06
09:06
09:06
Time Adjustment
Scheduled Runway Departure changed from Feb-25-2026 9:09 AM to Feb-25-2026 9:21 AM
Scheduled Runway Arrival changed from Feb-25-2026 10:11 AM to Feb-25-2026 10:45 AM
24 Feb
14:01
09:01
09:01
Time Adjustment
Scheduled Runway Departure changed to Feb-25-2026 9:09 AM
Scheduled Runway Arrival changed to Feb-25-2026 10:11 AM
24 Feb
12:22
07:22
07:22
Gate Adjustment
Departure Gate changed to A4E
24 Feb
00:57
19:57
19:57
Time Adjustment
Estimated Gate Departure changed to Feb-25-2026 9:00 AM
Estimated Gate Arrival changed to Feb-25-2026 10:49 AM
Tail Number changed to N31131
Actual Equipment changed to E45
22 Feb
18:46
13:46
13:46
Record Created
22 Feb
18:46
13:46
13:46
Time Adjustment
Scheduled Gate Departure changed to Feb-25-2026 9:00 AM
Scheduled Gate Arrival changed to Feb-25-2026 10:49 AM
Scheduled Equipment changed to ERJ