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United Airlines

Is UA4577 delayed?

Service date: · Scheduled departure date (UTC)

Arrived

47 min early

Official source · Updated

Departure

Harrisburg

MDT

Actual

Scheduled 18:17

Sep 8

Arrival

Chicago

ORD

Actual

Scheduled 15:30

Sep 8

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual

Arrival · UTC

Scheduled
Estimated
Actual

Recent arrivals

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

  • MDT → ORD

    144 min late

  • MDT → ORD

    9 min late

  • MDT → ORD

    129 min late

  • MDT → ORD

    220 min late

  • MDT → ORD

    33 min late
Flight history and details

Aug 19, 2026 — Sep 18, 2026

Observed arrivals
13
Arrivals over 15 minutes late
4
Observed cancellations
0
Observed occurrences
21

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

UA4577 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 17, 2026ArrivedHarrisburgChicago
View this flight’s market
144
Sep 16, 2026ArrivedHarrisburgChicago
9
Sep 15, 2026ArrivedHarrisburgChicago
129
Sep 14, 2026ArrivedHarrisburgChicago
220
Sep 13, 2026ArrivedHarrisburgChicago
33
Sep 12, 2026ArrivedHarrisburgChicago
-10
Sep 11, 2026ArrivedHarrisburgChicago
-17
Sep 10, 2026ArrivedHarrisburgChicago
-33
Sep 9, 2026ArrivedHarrisburgChicago
-22
Sep 8, 2026ArrivedHarrisburgChicago
-47
Sep 7, 2026ArrivedDullesRoanoke
-7
Sep 4, 2026ArrivedDullesRoanoke
-12
Aug 29, 2026ArrivedDullesRoanoke
-10

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