(UA) United Airlines 4308 Flight Details
On time | Scheduled
Departure
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
19-Dec-2025
Scheduled
12:55
EST
Estimated
12:55
EST
Total Departure Delay: -
Flight Runway Times
19-Dec-2025
Scheduled
13:15
EST
Actual
--
Runway Delay: -
Terminal
-
Gate
A4B
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 53m
Arrival
TYS
Knoxville McGhee Tyson Airport, TN, US
Flight Gate Times
19-Dec-2025
Scheduled
14:48
EST
Estimated
14:48
EST
Total Arrival Delay: -
Flight Runway Times
19-Dec-2025
Scheduled
14:45
EST
Actual
--
Runway Delay: -
Terminal
-
Gate
11
Baggage Claim
3
Tail Number
N23139
Flight Time
Estimated
1h 53m
Flight Notes
Operated by CommuteAir on behalf of United Airlines
Also marketed as (AC) Air Canada 4257, (ET) Ethiopian Airlines 1378
Event Timeline
Date
Event
Data Updated
19 Dec
14:19
09:19
09:19
Gate Adjustment
Departure Gate changed from A4B to A2E
19 Dec
14:19
09:19
09:19
Gate Adjustment
Departure Gate changed from A2E to A4B
19 Dec
14:13
09:13
09:13
Gate Adjustment
Departure Gate changed from A6A to A4B
19 Dec
10:25
05:25
05:25
Gate Adjustment
Arrival Gate changed to 11
Baggage changed to 3
19 Dec
06:49
01:49
01:49
Equipment Adjustment
Tail Number changed from N21154 to N23139
18 Dec
22:49
17:49
17:49
Gate Adjustment
Departure Gate changed from A4A to A6A
18 Dec
18:01
13:01
13:01
Time Adjustment
Scheduled Runway Arrival changed from Dec-19-2025 2:20 PM to Dec-19-2025 2:45 PM
18 Dec
17:56
12:56
12:56
Time Adjustment
Scheduled Runway Departure changed to Dec-19-2025 1:15 PM
Scheduled Runway Arrival changed to Dec-19-2025 2:20 PM
18 Dec
17:19
12:19
12:19
Gate Adjustment
Departure Gate changed to A4A
18 Dec
06:51
01:51
01:51
Time Adjustment
Estimated Gate Departure changed to Dec-19-2025 12:55 PM
Estimated Gate Arrival changed to Dec-19-2025 2:48 PM
Tail Number changed to N21154
Actual Equipment changed to E45
16 Dec
18:49
13:49
13:49
Record Created
16 Dec
18:49
13:49
13:49
Time Adjustment
Scheduled Gate Departure changed to Dec-19-2025 12:55 PM
Scheduled Gate Arrival changed to Dec-19-2025 2:48 PM
Scheduled Equipment changed to ERJ