(UA) United Airlines 4257 Flight Details
Delayed by 1h 5m | Arrived
Departure
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
28-Dec-2025
Scheduled
09:00
EST
Actual
10:37
EST
Total Departure Delay: 1 h 37 mins
Flight Runway Times
28-Dec-2025
Scheduled
09:21
EST
Actual
10:51
EST
Runway Delay: 1 h 30 mins
Terminal
-
Gate
A4A
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 56m
Arrival
TYS
Knoxville McGhee Tyson Airport, TN, US
Flight Gate Times
28-Dec-2025
Scheduled
10:56
EST
Actual
12:01
EST
Total Arrival Delay: 1 h 5 mins
Flight Runway Times
28-Dec-2025
Scheduled
10:52
EST
Actual
11:57
EST
Runway Delay: 1 h 5 mins
Terminal
-
Gate
-
Baggage Claim
-
Tail Number
N11192
Flight Time
Actual
1h 24m
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
28 Dec
17:06
12:06
12:06
Time Adjustment
Estimated Gate Arrival changed from Dec-28-2025 12:05 PM to Dec-28-2025 12:01 PM
Actual Gate Arrival changed to Dec-28-2025 12:01 PM
28 Dec
17:01
12:01
12:01
Time Adjustment
Estimated Runway Arrival changed from Dec-28-2025 11:56 AM to Dec-28-2025 11:57 AM
Actual Runway Arrival changed from Dec-28-2025 11:56 AM to Dec-28-2025 11:57 AM
Estimated Gate Arrival changed from Dec-28-2025 12:08 PM to Dec-28-2025 12:05 PM
28 Dec
16:58
11:58
11:58
Status Landed
Estimated Runway Arrival changed from Dec-28-2025 12:04 PM to Dec-28-2025 11:56 AM
Actual Runway Arrival changed to Dec-28-2025 11:56 AM
Status changed from Active to Landed
28 Dec
15:55
10:55
10:55
Time Adjustment
Estimated Runway Arrival changed from Dec-28-2025 12:01 PM to Dec-28-2025 12:04 PM
Estimated Gate Arrival changed from Dec-28-2025 12:37 PM to Dec-28-2025 12:08 PM
28 Dec
15:53
10:53
10:53
Time Adjustment
Estimated Runway Arrival changed from Dec-28-2025 11:55 AM to Dec-28-2025 12:01 PM
28 Dec
15:52
10:52
10:52
Time Adjustment
Estimated Runway Departure changed from Dec-28-2025 11:02 AM to Dec-28-2025 10:51 AM
Actual Runway Departure changed to Dec-28-2025 10:51 AM
Estimated Runway Arrival changed from Dec-28-2025 12:33 PM to Dec-28-2025 11:55 AM
28 Dec
15:43
10:43
10:43
Status Active
Estimated Gate Departure changed from Dec-28-2025 10:41 AM to Dec-28-2025 10:37 AM
Actual Gate Departure changed to Dec-28-2025 10:37 AM
Status changed from Scheduled to Active
28 Dec
15:39
10:39
10:39
Time Adjustment
Estimated Runway Arrival changed to Dec-28-2025 12:33 PM
28 Dec
14:26
09:26
09:26
Time Adjustment
Estimated Runway Departure changed to Dec-28-2025 11:02 AM
28 Dec
05:33
00:33
00:33
Time Adjustment
Estimated Gate Departure changed from Dec-28-2025 9:00 AM to Dec-28-2025 10:41 AM
Estimated Gate Arrival changed from Dec-28-2025 10:56 AM to Dec-28-2025 12:37 PM
27 Dec
22:01
17:01
17:01
Gate Adjustment
Departure Gate changed from A5B to A4A
27 Dec
19:49
14:49
14:49
Gate Adjustment
Departure Gate changed from A1C to A5B
27 Dec
18:43
13:43
13:43
Equipment Adjustment
Tail Number changed from N17169 to N11192
27 Dec
17:37
12:37
12:37
Gate Adjustment
Departure Gate changed from A1 to A1C
27 Dec
17:25
12:25
12:25
Equipment Adjustment
Tail Number changed from N11150 to N17169
27 Dec
16:13
11:13
11:13
Equipment Adjustment
Tail Number changed from N21129 to N11150
27 Dec
15:01
10:01
10:01
Gate Adjustment
Departure Gate changed from 1 to A1
Tail Number changed from N14158 to N21129
27 Dec
14:07
09:07
09:07
Time Adjustment
Scheduled Runway Departure changed from Dec-28-2025 9:12 AM to Dec-28-2025 9:21 AM
Scheduled Runway Arrival changed from Dec-28-2025 10:15 AM to Dec-28-2025 10:52 AM
27 Dec
14:01
09:01
09:01
Time Adjustment
Scheduled Runway Departure changed to Dec-28-2025 9:12 AM
Scheduled Runway Arrival changed to Dec-28-2025 10:15 AM
27 Dec
07:34
02:34
02:34
Gate Adjustment
Departure Gate changed from A1 to 1
27 Dec
06:49
01:49
01:49
Time Adjustment
Estimated Gate Departure changed to Dec-28-2025 9:00 AM
Estimated Gate Arrival changed to Dec-28-2025 10:56 AM
Tail Number changed to N14158
Actual Equipment changed to E45
27 Dec
06:49
01:49
01:49
Gate Adjustment
Departure Gate changed to A1
25 Dec
18:48
13:48
13:48
Record Created
25 Dec
18:48
13:48
13:48
Time Adjustment
Scheduled Gate Departure changed to Dec-28-2025 9:00 AM
Scheduled Gate Arrival changed to Dec-28-2025 10:56 AM
Scheduled Equipment changed to ERJ