background

(UA) United Airlines 4257 Flight Details

On time | Scheduled

Departure

IAD

Washington Dulles International Airport, VA, US

Flight Gate Times

07-Mar-2026

Scheduled

09:00

 EST

Estimated

09:00

 EST

Total Departure Delay: -

Flight Runway Times

07-Mar-2026

Scheduled

09:21

 EST

Actual

--

Runway Delay: -

Terminal

-

Gate

A6A

Craft Type

Embraer EMB-145XR

E45

Flight Time

Scheduled

1h 49m

Arrival

TYS

Knoxville McGhee Tyson Airport, TN, US

Flight Gate Times

07-Mar-2026

Scheduled

10:49

 EST

Estimated

10:49

 EST

Total Arrival Delay: -

Flight Runway Times

07-Mar-2026

Scheduled

10:45

 EST

Actual

--

Runway Delay: -

Terminal

-

Gate

-

Baggage Claim

-

Tail Number

N12160

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

7 Mar

07:14

Departure Gate changed from A4E to A6A

7 Mar

06:50

Departure Gate changed from A4B to A4E

7 Mar

06:50

Departure Gate changed from A4A to A4B

7 Mar

06:50

Tail Number changed from N17146 to N12160

6 Mar

15:26

Departure Gate changed from A1C to A4A

6 Mar

14:07

Scheduled Runway Departure changed from Mar-07-2026 9:10 AM to Mar-07-2026 9:21 AM

Scheduled Runway Arrival changed from Mar-07-2026 10:12 AM to Mar-07-2026 10:45 AM

6 Mar

14:01

Scheduled Runway Departure changed to Mar-07-2026 9:10 AM

Scheduled Runway Arrival changed to Mar-07-2026 10:12 AM

6 Mar

12:26

Departure Gate changed from A4C to A1C

6 Mar

06:50

Tail Number changed from N11165 to N17146

6 Mar

03:44

Departure Gate changed from A5B to A4C

5 Mar

19:56

Departure Gate changed from A2F to A5B

5 Mar

19:14

Estimated Gate Departure changed to Mar-07-2026 9:00 AM

Estimated Gate Arrival changed to Mar-07-2026 10:49 AM

Departure Gate changed to A2F

Tail Number changed to N11165

Actual Equipment changed to E45

4 Mar

18:44

4 Mar

18:44

Scheduled Gate Departure changed to Mar-07-2026 9:00 AM

Scheduled Gate Arrival changed to Mar-07-2026 10:49 AM

Scheduled Equipment changed to ERJ