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United Airlines

Is UA4581 delayed?

No, UA4581 landed in Chicago 13 min early, at 11:06 on Nov 13 (as of Nov 13, 17:06 UTC).

Usually on time: arrived within 15 min of schedule on 12 of the last 13 flights.

Arrived

13 min early

Official source · Updated

Departure

Knoxville

TYS

Scheduled

Nov 13

Arrival

Chicago

ORD

Actual

Scheduled 11:20

Nov 13

Times shown in airport local time

Service date: · Scheduled departure date (America/New_York)

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Not available
Actual

Also sold as NH7191, NZ2950

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • Knoxville → Chicago

    13 min early

  • Knoxville → Chicago

    3 min early

  • Knoxville → Chicago

    21 min early

  • Knoxville → Chicago

    28 min early

  • Knoxville → Chicago

    19 min early

Is UA4581 usually late?

Period: Oct 15, 2026 – Nov 14, 2026

Arrivals tracked
13
On time
92%
of 13 arrivals
Late
8%
of 13 arrivals
Cancelled
0%
of 21 flights
Median arrival delay
13 min early
9 in 10 arrived within
6 min

On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Compares scheduled and actual arrival times. Cancelled and diverted flights are left out. Some flights may be missing.

How flight status works

At the airports today

Chicago (ORD) departures

Left more than 15 min late
66 of 160
Cancelled today
134

Related flights

All United Airlines flights

Flight history and details
UA4581 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Nov 13, 2026ArrivedKnoxvilleChicago-13
Nov 12, 2026ArrivedKnoxvilleChicago-3
Nov 11, 2026ArrivedKnoxvilleChicago-21
Nov 10, 2026ArrivedKnoxvilleChicago-28
Nov 9, 2026ArrivedKnoxvilleChicago-19
Nov 8, 2026ArrivedKnoxvilleChicago-10
Nov 6, 2026ArrivedKnoxvilleChicago-23
Nov 5, 2026ArrivedKnoxvilleChicago-14
Nov 4, 2026ArrivedKnoxvilleChicago-21
Nov 3, 2026ArrivedKnoxvilleChicagoNot available
Oct 30, 2026ArrivedKnoxvilleChicagoNot available
Oct 29, 2026ArrivedKnoxvilleChicagoNot available
Oct 27, 2026ArrivedKnoxvilleChicagoNot available
Oct 25, 2026ArrivedKnoxvilleChicagoNot available
Oct 21, 2026ArrivedHoustonTulsa223
Oct 18, 2026ArrivedHoustonTulsa2
Oct 16, 2026ArrivedHoustonTulsa6
Oct 15, 2026ArrivedHoustonTulsa5
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