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(UA) United Airlines 4257 Flight Details

On time | Scheduled

Departure

IAD

Washington Dulles International Airport, VA, US

Flight Gate Times

28-Feb-2026

Scheduled

09:00

 EST

Estimated

09:00

 EST

Total Departure Delay: -

Flight Runway Times

28-Feb-2026

Scheduled

09:21

 EST

Actual

--

Runway Delay: -

Terminal

-

Gate

A1C

Craft Type

Embraer EMB-145XR

E45

Flight Time

Scheduled

1h 49m

Arrival

TYS

Knoxville McGhee Tyson Airport, TN, US

Flight Gate Times

28-Feb-2026

Scheduled

10:49

 EST

Estimated

10:49

 EST

Total Arrival Delay: -

Flight Runway Times

28-Feb-2026

Scheduled

10:45

 EST

Actual

--

Runway Delay: -

Terminal

-

Gate

11

Baggage Claim

3

Tail Number

N16151

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

28 Feb

09:26

Arrival Gate changed to 11

Baggage changed to 3

28 Feb

06:50

Tail Number changed from N14186 to N16151

28 Feb

03:21

Departure Gate changed from 1 to A1C

27 Feb

14:07

Scheduled Runway Departure changed from Feb-28-2026 9:09 AM to Feb-28-2026 9:21 AM

Scheduled Runway Arrival changed from Feb-28-2026 10:14 AM to Feb-28-2026 10:45 AM

27 Feb

14:01

Scheduled Runway Departure changed to Feb-28-2026 9:09 AM

Scheduled Runway Arrival changed to Feb-28-2026 10:14 AM

27 Feb

12:58

Departure Gate changed from A1C to 1

27 Feb

12:42

Departure Gate changed from A1 to A1C

27 Feb

12:38

Departure Gate changed from A1C to A1

27 Feb

12:32

Departure Gate changed from A4F to A1C

27 Feb

06:50

Estimated Gate Departure changed to Feb-28-2026 9:00 AM

Estimated Gate Arrival changed to Feb-28-2026 10:49 AM

Tail Number changed to N14186

Actual Equipment changed to E45

27 Feb

06:50

Departure Gate changed to A4F

25 Feb

18:45

25 Feb

18:45

Scheduled Gate Departure changed to Feb-28-2026 9:00 AM

Scheduled Gate Arrival changed to Feb-28-2026 10:49 AM

Scheduled Equipment changed to ERJ