How long is the UA4581 flight?

The timetable allows 2 h 6 min. Knoxville to Chicago is 765 km (475 mi).

What other flight numbers does UA4581 have?

Also listed as UAL4581 (United Airlines' ICAO code) and UA 4581.

UA4581 Flight Status United Airlines: Knoxville to Chicago (UAL4581)

United Airlines UA 4581

Scheduled in 2h05'

TYS Knoxville

Scheduled: 10:33
Estimated: 10:33

Terminal and gate not announced yet

Departure: Mon, Nov 9, 2026 · local time EST

Knoxville McGhee Tyson Airport (TYS)

All TYS Departures >

ORD Chicago

Scheduled: 11:39
Estimated
Delay

Terminal: 2 | Gate: F19

Arrival: Mon, Nov 9, 2026 · local time CST

Chicago O'Hare International Airport (ORD)

All ORD Arrivals >

Departs in 2h 05m 0%

TYS 10:33 ORD 11:39

765 km (475 mi) to fly

Estimated position based on departure and arrival times, not live tracking. Times are local at each airport.

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Distance: 765 km / 475 miles · Scheduled Duration: 02:06

UA 4581 Flight Status & Schedule United Airlines Knoxville to Chicago

Date	From	To	Departure	Arrival	Status	Details
Nov 09	TYS	ORD	10:33	11:39	Scheduled	Track >

United Airlines' Knoxville–Chicago flight covers 765 km (475 mi) and runs once a week, on Mondays. The timetable allows 2 h 6 min; there is not enough recent history yet to say how long it usually takes. Today's flight is scheduled to leave at 10:33 and arrive at 11:39 local time.

< All Knoxville TYS Departures All Chicago ORD Arrivals >

About UA 4581

Route: Knoxville McGhee Tyson Airport TYS to Chicago O'Hare International Airport ORD
Distance: 765 km (475 mi)
Scheduled flight time: 2 h 6 min
Flies: Mon

UA 4581 FAQ

How long is the UA4581 flight?: The timetable allows 2 h 6 min. Knoxville to Chicago is 765 km (475 mi).
Which days does UA4581 fly?: Once a week, on Mondays, based on the schedule of the last 7 days.
What other flight numbers does UA4581 have?: Also listed as UAL4581 (United Airlines' ICAO code) and UA 4581.

UA4581 and Knoxville TYS to Chicago ORD Flights

Other flights departing from Knoxville TYS: G74581, 9E4666, G41020

Other flights arriving at Chicago ORD: AA990, G74581

All flights connecting Knoxville TYS to Chicago ORD.