(UA) United Airlines 4257 Flight Details
On time | Scheduled
Departure
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
26-Dec-2025
Scheduled
09:00
EST
Estimated
09:00
EST
Total Departure Delay: -
Flight Runway Times
26-Dec-2025
Scheduled
09:21
EST
Actual
--
Runway Delay: -
Terminal
-
Gate
A2F
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 56m
Arrival
TYS
Knoxville McGhee Tyson Airport, TN, US
Flight Gate Times
26-Dec-2025
Scheduled
10:56
EST
Estimated
10:56
EST
Total Arrival Delay: -
Flight Runway Times
26-Dec-2025
Scheduled
10:52
EST
Actual
--
Runway Delay: -
Terminal
-
Gate
7
Baggage Claim
3
Tail Number
N13124
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
26 Dec
10:12
05:12
05:12
Gate Adjustment
Departure Gate changed from A4A to A2F
26 Dec
09:56
04:56
04:56
Gate Adjustment
Departure Gate changed from A2F to A4A
26 Dec
09:49
04:49
04:49
Gate Adjustment
Departure Gate changed from A4A to A2F
26 Dec
09:43
04:43
04:43
Gate Adjustment
Arrival Gate changed to 7
Baggage changed to 3
26 Dec
09:43
04:43
04:43
Equipment Adjustment
Tail Number changed from N12201 to N13124
26 Dec
08:49
03:49
03:49
Gate Adjustment
Departure Gate changed from A2F to A4A
26 Dec
02:19
21:19
21:19
Gate Adjustment
Departure Gate changed from A4B to A2F
25 Dec
23:55
18:55
18:55
Gate Adjustment
Departure Gate changed from A6A to A4B
25 Dec
23:43
18:43
18:43
Equipment Adjustment
Tail Number changed from N14158 to N12201
25 Dec
14:06
09:06
09:06
Time Adjustment
Scheduled Runway Departure changed from Dec-26-2025 9:11 AM to Dec-26-2025 9:21 AM
Scheduled Runway Arrival changed from Dec-26-2025 10:12 AM to Dec-26-2025 10:52 AM
25 Dec
14:01
09:01
09:01
Time Adjustment
Scheduled Runway Departure changed to Dec-26-2025 9:11 AM
Scheduled Runway Arrival changed to Dec-26-2025 10:12 AM
25 Dec
02:13
21:13
21:13
Gate Adjustment
Departure Gate changed to A6A
24 Dec
23:43
18:43
18:43
Time Adjustment
Estimated Gate Departure changed to Dec-26-2025 9:00 AM
Estimated Gate Arrival changed to Dec-26-2025 10:56 AM
Tail Number changed to N14158
Actual Equipment changed to E45
23 Dec
18:48
13:48
13:48
Record Created
23 Dec
18:48
13:48
13:48
Time Adjustment
Scheduled Gate Departure changed to Dec-26-2025 9:00 AM
Scheduled Gate Arrival changed to Dec-26-2025 10:56 AM
Scheduled Equipment changed to ERJ