Flight UA 4257: Washington Dulles → Knoxville

United Airlines4 October 2026DepartedUpdated 43 min ago, official airport data

All flights Washington Dulles → Knoxville

Departure

Washington Dulles IAD

08:52

Actual09:00 scheduled8 min early

Gate: A4A

Departed

Flight time: 1 h 37 min

Arrival

Knoxville TYS

10:37

Scheduled

Data from the official airport boards. Times are local to each airport.

Follow flight UA 4257, 4 October 2026

We will message you when the status, time, terminal, check-in desk or gate changes on the airport board, exactly as the board shows it. Every message has a Stop button or link.

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Flight time: 1 h 37 min
Distance: ≈ 674 km
Days of the week

Punctuality of flight UA 4257

The last 60 days of boards hold fewer than 5 finished flights with a known departure time: too few to count punctuality.

Flight UA 4257: schedule and upcoming dates

Days it flew in the last 60 days
Usual departure time: 09:00
Usual arrival time: 10:37

Dates already on the boards

Sun 4 OctDeparture 09:00, Arrival 10:37Departed
Mon 5 OctDeparture 09:00Scheduled

Follow flight UA 4257, 5 October 2026

We will message you when the status, time, terminal, check-in desk or gate changes on the airport board, exactly as the board shows it. Every message has a Stop button or link.

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Route of flight UA 4257

Departure airport: Washington Dulles (IAD). Arrival airport: Knoxville (TYS). Scheduled flight time: about 1 h 37 min. Distance between the airports: about 674 km in a straight line.

Questions about flight UA 4257

Is flight UA 4257 on time today?

For 4 October 2026 the airport board shows flight UA 4257 as “Departed”. Departure: Washington Dulles, 08:52. Arrival: Knoxville, 10:37.

Which terminal and gate does flight UA 4257 use?

Washington Dulles (IAD): Gate A4A. Gates are announced shortly before boarding and can change: check the screens at the airport.

How often is flight UA 4257 delayed?

The last 60 days of boards hold fewer than 5 finished flights with a known departure time: too few to count punctuality.

How long does flight UA 4257 take?

About 1 h 37 min by the schedule. The airports are 674 km apart.

On which days does flight UA 4257 operate?

In the last 60 days it was on the boards on: Monday, Sunday.

How can I get notified when flight UA 4257 changes?

Use the notifications block at the top of this page: Telegram or e-mail. We will message you when the status, time, terminal, check-in desk or gate changes on the airport board, exactly as the board shows it. Every message has a Stop button or link.

Flight UA 4257, 4 October 2026