(UA) United Airlines 4257 Flight Details
On time | Departed
Departure
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
16-Jan-2026
Scheduled
09:00
EST
Actual
09:09
EST
Total Departure Delay: 9 mins
Flight Runway Times
16-Jan-2026
Scheduled
09:21
EST
Estimated
09:29
EST
Runway Delay: 8 mins
Terminal
-
Gate
A4B
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 57m
Arrival
TYS
Knoxville McGhee Tyson Airport, TN, US
Flight Gate Times
16-Jan-2026
Scheduled
10:57
EST
Estimated
11:05
EST
Total Arrival Delay: 8 mins
Flight Runway Times
16-Jan-2026
Scheduled
10:53
EST
Estimated
10:53
EST
Runway Delay: -
Terminal
-
Gate
-
Baggage Claim
-
Tail Number
N14125
Flight Time
Estimated
1h 56m
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
16 Jan
14:16
09:16
09:16
Time Adjustment
Estimated Gate Departure changed from Jan-16-2026 9:08 AM to Jan-16-2026 9:09 AM
Actual Gate Departure changed from Jan-16-2026 9:08 AM to Jan-16-2026 9:09 AM
16 Jan
14:03
09:03
09:03
Status Active
Actual Gate Departure changed to Jan-16-2026 9:08 AM
Status changed from Scheduled to Active
16 Jan
13:49
08:49
08:49
Time Adjustment
Estimated Gate Departure changed from Jan-16-2026 9:00 AM to Jan-16-2026 9:08 AM
Estimated Gate Arrival changed from Jan-16-2026 10:57 AM to Jan-16-2026 11:05 AM
16 Jan
13:46
08:46
08:46
Time Adjustment
Estimated Runway Departure changed from Jan-16-2026 9:21 AM to Jan-16-2026 9:29 AM
16 Jan
12:43
07:43
07:43
Time Adjustment
Estimated Gate Departure changed from Jan-16-2026 9:20 AM to Jan-16-2026 9:00 AM
Estimated Gate Arrival changed from Jan-16-2026 11:17 AM to Jan-16-2026 10:57 AM
16 Jan
12:39
07:39
07:39
Time Adjustment
Estimated Runway Departure changed from Jan-16-2026 9:41 AM to Jan-16-2026 9:21 AM
Estimated Runway Arrival changed to Jan-16-2026 10:53 AM
16 Jan
12:39
07:39
07:39
Time Adjustment
Scheduled Runway Departure changed from Jan-16-2026 9:41 AM to Jan-16-2026 9:21 AM
Scheduled Runway Arrival changed from Jan-16-2026 11:13 AM to Jan-16-2026 10:53 AM
16 Jan
11:19
06:19
06:19
Time Adjustment
Estimated Gate Departure changed from Jan-16-2026 9:00 AM to Jan-16-2026 9:20 AM
Estimated Gate Arrival changed from Jan-16-2026 10:57 AM to Jan-16-2026 11:17 AM
16 Jan
11:13
06:13
06:13
Time Adjustment
Scheduled Runway Departure changed from Jan-16-2026 9:21 AM to Jan-16-2026 9:41 AM
Scheduled Runway Arrival changed from Jan-16-2026 10:53 AM to Jan-16-2026 11:13 AM
16 Jan
11:13
06:13
06:13
Time Adjustment
Estimated Runway Departure changed to Jan-16-2026 9:41 AM
16 Jan
11:01
06:01
06:01
Equipment Adjustment
Tail Number changed from N14153 to N14125
16 Jan
09:25
04:25
04:25
Equipment Adjustment
Tail Number changed from N14125 to N14153
16 Jan
07:37
02:37
02:37
Gate Adjustment
Departure Gate changed from A4A to A4B
15 Jan
19:37
14:37
14:37
Equipment Adjustment
Tail Number changed from N14153 to N14125
15 Jan
14:06
09:06
09:06
Time Adjustment
Scheduled Runway Departure changed from Jan-16-2026 9:08 AM to Jan-16-2026 9:21 AM
Scheduled Runway Arrival changed from Jan-16-2026 10:14 AM to Jan-16-2026 10:53 AM
15 Jan
14:01
09:01
09:01
Time Adjustment
Scheduled Runway Departure changed to Jan-16-2026 9:08 AM
Scheduled Runway Arrival changed to Jan-16-2026 10:14 AM
15 Jan
12:43
07:43
07:43
Gate Adjustment
Departure Gate changed from A6A to A4A
15 Jan
12:37
07:37
07:37
Gate Adjustment
Departure Gate changed to A6A
15 Jan
06:49
01:49
01:49
Time Adjustment
Estimated Gate Departure changed to Jan-16-2026 9:00 AM
Estimated Gate Arrival changed to Jan-16-2026 10:57 AM
Tail Number changed to N14153
Actual Equipment changed to E45
13 Jan
18:47
13:47
13:47
Record Created
13 Jan
18:47
13:47
13:47
Time Adjustment
Scheduled Gate Departure changed to Jan-16-2026 9:00 AM
Scheduled Gate Arrival changed to Jan-16-2026 10:57 AM
Scheduled Equipment changed to ERJ