(UA) United Airlines 4257 Flight Details
On time | Scheduled
Departure
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
07-Jan-2026
Scheduled
09:00
EST
Estimated
09:00
EST
Total Departure Delay: -
Flight Runway Times
07-Jan-2026
Scheduled
09:21
EST
Actual
--
Runway Delay: -
Terminal
-
Gate
A3C
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 57m
Arrival
TYS
Knoxville McGhee Tyson Airport, TN, US
Flight Gate Times
07-Jan-2026
Scheduled
10:57
EST
Estimated
10:57
EST
Total Arrival Delay: -
Flight Runway Times
07-Jan-2026
Scheduled
10:53
EST
Actual
--
Runway Delay: -
Terminal
-
Gate
-
Baggage Claim
-
Tail Number
N14198
Flight Time
Estimated
1h 57m
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
7 Jan
08:13
03:13
03:13
Gate Adjustment
Departure Gate changed from A6B to A3C
7 Jan
07:01
02:01
02:01
Gate Adjustment
Departure Gate changed from A6A to A6B
7 Jan
06:49
01:49
01:49
Equipment Adjustment
Tail Number changed from N12201 to N14198
6 Jan
14:06
09:06
09:06
Time Adjustment
Scheduled Runway Departure changed from Jan-07-2026 9:12 AM to Jan-07-2026 9:21 AM
Scheduled Runway Arrival changed from Jan-07-2026 10:17 AM to Jan-07-2026 10:53 AM
6 Jan
14:01
09:01
09:01
Time Adjustment
Scheduled Runway Departure changed to Jan-07-2026 9:12 AM
Scheduled Runway Arrival changed to Jan-07-2026 10:17 AM
6 Jan
06:55
01:55
01:55
Gate Adjustment
Departure Gate changed from A2E to A6A
6 Jan
06:49
01:49
01:49
Gate Adjustment
Departure Gate changed to A2E
6 Jan
06:49
01:49
01:49
Equipment Adjustment
Tail Number changed from N11191 to N12201
5 Jan
06:49
01:49
01:49
Time Adjustment
Estimated Gate Departure changed to Jan-07-2026 9:00 AM
Estimated Gate Arrival changed to Jan-07-2026 10:57 AM
Tail Number changed to N11191
Actual Equipment changed to E45
4 Jan
18:44
13:44
13:44
Record Created
4 Jan
18:44
13:44
13:44
Time Adjustment
Scheduled Gate Departure changed to Jan-07-2026 9:00 AM
Scheduled Gate Arrival changed to Jan-07-2026 10:57 AM
Scheduled Equipment changed to ERJ