(UA) United Airlines 4257 Flight Details
On time | Scheduled
Departure
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
27-Dec-2025
Scheduled
09:00
EST
Estimated
09:00
EST
Total Departure Delay: -
Flight Runway Times
27-Dec-2025
Scheduled
09:21
EST
Actual
--
Runway Delay: -
Terminal
-
Gate
A6B
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 56m
Arrival
TYS
Knoxville McGhee Tyson Airport, TN, US
Flight Gate Times
27-Dec-2025
Scheduled
10:56
EST
Estimated
10:56
EST
Total Arrival Delay: -
Flight Runway Times
27-Dec-2025
Scheduled
10:52
EST
Actual
--
Runway Delay: -
Terminal
-
Gate
-
Baggage Claim
-
Tail Number
N14158
Flight Time
Estimated
1h 56m
Flight Notes
Operated by CommuteAir on behalf of United Airlines
Also marketed as (AC) Air Canada 4741, (CM) Copa Airlines 2237
Event Timeline
Date
Event
Data Updated
27 Dec
04:55
23:55
23:55
Gate Adjustment
Departure Gate changed from A6C to A6B
27 Dec
04:55
23:55
23:55
Gate Adjustment
Departure Gate changed from A6B to A6C
27 Dec
03:55
22:55
22:55
Gate Adjustment
Departure Gate changed from A6C to A6B
27 Dec
02:37
21:37
21:37
Gate Adjustment
Departure Gate changed from A4E to A6C
26 Dec
23:31
18:31
18:31
Gate Adjustment
Departure Gate changed from A5C to A4E
26 Dec
22:25
17:25
17:25
Gate Adjustment
Departure Gate changed from A4F to A5C
26 Dec
21:55
16:55
16:55
Gate Adjustment
Departure Gate changed from A6B to A4F
26 Dec
14:07
09:07
09:07
Time Adjustment
Scheduled Runway Departure changed from Dec-27-2025 9:11 AM to Dec-27-2025 9:21 AM
Scheduled Runway Arrival changed from Dec-27-2025 10:14 AM to Dec-27-2025 10:52 AM
26 Dec
14:01
09:01
09:01
Time Adjustment
Scheduled Runway Departure changed to Dec-27-2025 9:11 AM
Scheduled Runway Arrival changed to Dec-27-2025 10:14 AM
26 Dec
11:50
06:50
06:50
Gate Adjustment
Departure Gate changed to A6B
26 Dec
06:49
01:49
01:49
Time Adjustment
Estimated Gate Departure changed to Dec-27-2025 9:00 AM
Estimated Gate Arrival changed to Dec-27-2025 10:56 AM
Tail Number changed to N14158
Actual Equipment changed to E45
24 Dec
18:47
13:47
13:47
Record Created
24 Dec
18:47
13:47
13:47
Time Adjustment
Scheduled Gate Departure changed to Dec-27-2025 9:00 AM
Scheduled Gate Arrival changed to Dec-27-2025 10:56 AM
Scheduled Equipment changed to ERJ