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(UA) United Airlines 4257 Flight Details

On time | Scheduled

Departure

IAD

Washington Dulles International Airport, VA, US

Flight Gate Times

08-Mar-2026

Scheduled

09:00

 EDT

Estimated

09:00

 EDT

Total Departure Delay: -

Flight Runway Times

08-Mar-2026

Scheduled

09:21

 EDT

Actual

--

Runway Delay: -

Terminal

-

Gate

A6B

Craft Type

Embraer EMB-145XR

E45

Flight Time

Scheduled

1h 49m

Arrival

TYS

Knoxville McGhee Tyson Airport, TN, US

Flight Gate Times

08-Mar-2026

Scheduled

10:49

 EDT

Estimated

10:49

 EDT

Total Arrival Delay: -

Flight Runway Times

08-Mar-2026

Scheduled

10:45

 EDT

Actual

--

Runway Delay: -

Terminal

-

Gate

-

Baggage Claim

-

Tail Number

N14148

Flight Time

Estimated

1h 49m

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

Time

Date

UTC

Event

Data Updated

8 Mar

01:32

Departure Gate changed from A4A to A6B

8 Mar

00:02

Departure Gate changed from A5B to A4A

7 Mar

19:56

Departure Gate changed from A1C to A5B

7 Mar

18:03

Tail Number changed from N11192 to N14148

7 Mar

13:07

Scheduled Runway Departure changed from Mar-08-2026 9:09 AM to Mar-08-2026 9:21 AM

Scheduled Runway Arrival changed from Mar-08-2026 10:11 AM to Mar-08-2026 10:45 AM

7 Mar

13:01

Scheduled Runway Departure changed to Mar-08-2026 9:09 AM

Scheduled Runway Arrival changed to Mar-08-2026 10:11 AM

7 Mar

11:38

Departure Gate changed to A1C

7 Mar

09:33

Tail Number changed from N17169 to N11192

7 Mar

06:50

Tail Number changed from N11164 to N17169

6 Mar

06:50

Estimated Gate Departure changed to Mar-08-2026 9:00 AM

Estimated Gate Arrival changed to Mar-08-2026 10:49 AM

Tail Number changed to N11164

Actual Equipment changed to E45

5 Mar

18:47

5 Mar

18:47

Scheduled Gate Departure changed to Mar-08-2026 9:00 AM

Scheduled Gate Arrival changed to Mar-08-2026 10:49 AM

Scheduled Equipment changed to ERJ