(UA) United Airlines 4257 Flight Details
On time | Departed
Departure
IAD
Washington Dulles International Airport, VA, US
Flight Gate Times
17-Feb-2026
Scheduled
09:00
EST
Actual
08:49
EST
Total Departure Delay: -
Flight Runway Times
17-Feb-2026
Scheduled
09:21
EST
Actual
09:13
EST
Runway Delay: -
Terminal
-
Gate
A4E
Craft Type
Embraer EMB-145XR
E45
Flight Time
Scheduled
1h 49m
Arrival
TYS
Knoxville McGhee Tyson Airport, TN, US
Flight Gate Times
17-Feb-2026
Scheduled
10:49
EST
Estimated
10:42
EST
Total Arrival Delay: -
Flight Runway Times
17-Feb-2026
Scheduled
10:45
EST
Estimated
10:38
EST
Runway Delay: -
Terminal
-
Gate
-
Baggage Claim
-
Tail Number
N33182
Flight Time
Estimated
1h 53m
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
17 Feb
14:15
09:15
09:15
Time Adjustment
Estimated Runway Arrival changed from Feb-17-2026 10:16 AM to Feb-17-2026 10:38 AM
Estimated Gate Arrival changed from Feb-17-2026 10:49 AM to Feb-17-2026 10:42 AM
17 Feb
14:14
09:14
09:14
Time Adjustment
Estimated Runway Departure changed from Feb-17-2026 9:21 AM to Feb-17-2026 9:13 AM
Actual Runway Departure changed to Feb-17-2026 9:13 AM
Estimated Runway Arrival changed from Feb-17-2026 10:38 AM to Feb-17-2026 10:16 AM
17 Feb
14:13
09:13
09:13
Time Adjustment
Estimated Runway Arrival changed from Feb-17-2026 10:23 AM to Feb-17-2026 10:38 AM
17 Feb
13:51
08:51
08:51
Status Active
Estimated Gate Departure changed from Feb-17-2026 9:00 AM to Feb-17-2026 8:49 AM
Actual Gate Departure changed to Feb-17-2026 8:49 AM
Estimated Gate Arrival changed from Feb-17-2026 10:27 AM to Feb-17-2026 10:49 AM
Status changed from Scheduled to Active
17 Feb
13:51
08:51
08:51
Time Adjustment
Estimated Runway Arrival changed from Feb-17-2026 10:45 AM to Feb-17-2026 10:23 AM
Estimated Gate Arrival changed from Feb-17-2026 10:49 AM to Feb-17-2026 10:27 AM
17 Feb
13:51
08:51
08:51
Time Adjustment
Estimated Runway Arrival changed to Feb-17-2026 10:45 AM
17 Feb
13:02
08:02
08:02
Time Adjustment
Estimated Runway Departure changed to Feb-17-2026 9:21 AM
17 Feb
07:14
02:14
02:14
Gate Adjustment
Departure Gate changed from A1C to A4E
17 Feb
07:02
02:02
02:02
Gate Adjustment
Departure Gate changed from A5A to A1C
17 Feb
06:50
01:50
01:50
Equipment Adjustment
Tail Number changed from N23139 to N33182
16 Feb
16:38
11:38
11:38
Gate Adjustment
Departure Gate changed from A5 to A5A
16 Feb
16:38
11:38
11:38
Gate Adjustment
Departure Gate changed from A2E to A5
16 Feb
16:32
11:32
11:32
Time Adjustment
Scheduled Runway Departure changed from Feb-17-2026 9:11 AM to Feb-17-2026 9:21 AM
Scheduled Runway Arrival changed from Feb-17-2026 10:14 AM to Feb-17-2026 10:45 AM
16 Feb
14:01
09:01
09:01
Time Adjustment
Scheduled Runway Departure changed to Feb-17-2026 9:11 AM
Scheduled Runway Arrival changed to Feb-17-2026 10:14 AM
16 Feb
12:32
07:32
07:32
Gate Adjustment
Departure Gate changed to A2E
16 Feb
11:09
06:09
06:09
Equipment Adjustment
Tail Number changed from N24128 to N23139
16 Feb
06:51
01:51
01:51
Time Adjustment
Estimated Gate Departure changed to Feb-17-2026 9:00 AM
Estimated Gate Arrival changed to Feb-17-2026 10:49 AM
Tail Number changed to N24128
Actual Equipment changed to E45
14 Feb
18:45
13:45
13:45
Record Created
14 Feb
18:45
13:45
13:45
Time Adjustment
Scheduled Gate Departure changed to Feb-17-2026 9:00 AM
Scheduled Gate Arrival changed to Feb-17-2026 10:49 AM
Scheduled Equipment changed to ERJ