(UA) United Airlines 4257 Flight Details
On time | Arrived
Departure
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
21-Dec-2025
Scheduled
09:00
EST
Actual
08:53
EST
Total Departure Delay: -
Flight Runway Times
21-Dec-2025
Scheduled
09:21
EST
Actual
09:29
EST
Runway Delay: 8 mins
Terminal
-
Gate
A1
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 56m
Arrival
TYS
Knoxville McGhee Tyson Airport, TN, US
Flight Gate Times
21-Dec-2025
Scheduled
10:56
EST
Actual
11:03
EST
Total Arrival Delay: 7 mins
Flight Runway Times
21-Dec-2025
Scheduled
10:52
EST
Actual
10:55
EST
Runway Delay: 3 mins
Terminal
-
Gate
9
Baggage Claim
-
Tail Number
N13202
Flight Time
Actual
2h 10m
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
21 Dec
16:05
11:05
11:05
Time Adjustment
Estimated Gate Arrival changed from Dec-21-2025 11:01 AM to Dec-21-2025 11:03 AM
Actual Gate Arrival changed to Dec-21-2025 11:03 AM
21 Dec
16:01
11:01
11:01
Time Adjustment
Estimated Gate Arrival changed to Dec-21-2025 11:01 AM
21 Dec
16:01
11:01
11:01
Gate Adjustment
Arrival Gate changed to 9
21 Dec
15:57
10:57
10:57
Status Landed
Estimated Runway Arrival changed from Dec-21-2025 10:42 AM to Dec-21-2025 10:55 AM
Actual Runway Arrival changed to Dec-21-2025 10:55 AM
Estimated Gate Arrival changed from Dec-21-2025 10:46 AM
Status changed from Active to Landed
21 Dec
14:37
09:37
09:37
Time Adjustment
Estimated Runway Departure changed from Dec-21-2025 9:30 AM to Dec-21-2025 9:29 AM
Actual Runway Departure changed from Dec-21-2025 9:30 AM to Dec-21-2025 9:29 AM
Estimated Runway Arrival changed from Dec-21-2025 10:35 AM to Dec-21-2025 10:42 AM
Estimated Gate Arrival changed from Dec-21-2025 10:56 AM to Dec-21-2025 10:46 AM
21 Dec
14:34
09:34
09:34
Time Adjustment
Estimated Runway Departure changed from Dec-21-2025 9:29 AM to Dec-21-2025 9:30 AM
Actual Runway Departure changed from Dec-21-2025 9:29 AM to Dec-21-2025 9:30 AM
21 Dec
14:30
09:30
09:30
Time Adjustment
Estimated Runway Departure changed from Dec-21-2025 9:21 AM to Dec-21-2025 9:29 AM
Actual Runway Departure changed to Dec-21-2025 9:29 AM
Estimated Runway Arrival changed from Dec-21-2025 10:42 AM to Dec-21-2025 10:35 AM
21 Dec
14:17
09:17
09:17
Time Adjustment
Estimated Runway Arrival changed from Dec-21-2025 10:27 AM to Dec-21-2025 10:42 AM
21 Dec
13:55
08:55
08:55
Status Active
Estimated Gate Departure changed from Dec-21-2025 9:00 AM to Dec-21-2025 8:53 AM
Actual Gate Departure changed to Dec-21-2025 8:53 AM
Departure Gate changed from 1 to A1
Status changed from Scheduled to Active
21 Dec
13:54
08:54
08:54
Time Adjustment
Estimated Runway Arrival changed from Dec-21-2025 10:52 AM to Dec-21-2025 10:27 AM
21 Dec
13:54
08:54
08:54
Time Adjustment
Estimated Runway Arrival changed to Dec-21-2025 10:52 AM
21 Dec
12:45
07:45
07:45
Time Adjustment
Estimated Runway Departure changed to Dec-21-2025 9:21 AM
21 Dec
10:31
05:31
05:31
Gate Adjustment
Departure Gate changed from A1 to 1
21 Dec
10:25
05:25
05:25
Gate Adjustment
Departure Gate changed from A6A to A1
21 Dec
10:25
05:25
05:25
Equipment Adjustment
Tail Number changed from N12201 to N13202
21 Dec
09:07
04:07
04:07
Gate Adjustment
Departure Gate changed from A5B to A6A
21 Dec
07:49
02:49
02:49
Gate Adjustment
Departure Gate changed from A5 to A5B
21 Dec
06:49
01:49
01:49
Gate Adjustment
Departure Gate changed from 5 to A5
Tail Number changed from N11193 to N12201
20 Dec
23:15
18:15
18:15
Gate Adjustment
Departure Gate changed from A5 to 5
20 Dec
22:37
17:37
17:37
Gate Adjustment
Departure Gate changed from A4E to A5
20 Dec
22:37
17:37
17:37
Gate Adjustment
Departure Gate changed from A2F to A4E
20 Dec
20:01
15:01
15:01
Gate Adjustment
Departure Gate changed from A4F to A2F
20 Dec
17:49
12:49
12:49
Gate Adjustment
Departure Gate changed from 1 to A4F
20 Dec
16:25
11:25
11:25
Gate Adjustment
Departure Gate changed from A1 to 1
20 Dec
16:07
11:07
11:07
Equipment Adjustment
Tail Number changed from N11189 to N11193
20 Dec
16:07
11:07
11:07
Gate Adjustment
Departure Gate changed from A4F to A1
20 Dec
14:07
09:07
09:07
Time Adjustment
Scheduled Runway Departure changed from Dec-21-2025 9:09 AM to Dec-21-2025 9:21 AM
Scheduled Runway Arrival changed from Dec-21-2025 10:14 AM to Dec-21-2025 10:52 AM
20 Dec
14:01
09:01
09:01
Time Adjustment
Scheduled Runway Departure changed to Dec-21-2025 9:09 AM
Scheduled Runway Arrival changed to Dec-21-2025 10:14 AM
20 Dec
12:25
07:25
07:25
Gate Adjustment
Departure Gate changed to A4F
20 Dec
06:49
01:49
01:49
Equipment Adjustment
Tail Number changed from N14203 to N11189
19 Dec
06:49
01:49
01:49
Time Adjustment
Estimated Gate Departure changed to Dec-21-2025 9:00 AM
Estimated Gate Arrival changed to Dec-21-2025 10:56 AM
Tail Number changed to N14203
Actual Equipment changed to E45
18 Dec
18:48
13:48
13:48
Record Created
18 Dec
18:48
13:48
13:48
Time Adjustment
Scheduled Gate Departure changed to Dec-21-2025 9:00 AM
Scheduled Gate Arrival changed to Dec-21-2025 10:56 AM
Scheduled Equipment changed to ERJ