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United Airlines

Is UA3550 delayed?

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

Arrived

26 min early

Official source · Updated

Departure

Chicago

ORD

Scheduled

Sep 10

Arrival

Louisville

SDF

Actual

Scheduled 13:45

Sep 10

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Not available
Actual

Recent arrivals

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

  • ORD → SDF

    9 min late

  • ORD → SDF

    17 min early

  • ORD → SDF

    8 min late

  • ORD → SDF

    21 min late

  • ORD → SDF

    17 min early
Flight history and details

Aug 21, 2026 — Sep 20, 2026

Observed arrivals
15
Arrivals over 15 minutes late
2
Observed cancellations
2
Observed occurrences
17

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

UA3550 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 20, 2026ArrivedChicagoLouisville
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9
Sep 19, 2026CancelledChicagoLouisvilleNot available
Not available
Sep 18, 2026ArrivedChicagoLouisville
-17
Sep 17, 2026CancelledChicagoLouisvilleNot available
Not available
Sep 16, 2026ArrivedChicagoLouisville
8
Sep 15, 2026ArrivedChicagoLouisville
21
Sep 14, 2026ArrivedChicagoLouisville
-17
Sep 13, 2026ArrivedChicagoLouisville
-44
Sep 12, 2026ArrivedChicagoLouisville
-6
Sep 11, 2026ArrivedChicagoLouisville
14
Sep 10, 2026ArrivedChicagoLouisville
-26
Sep 9, 2026ArrivedChicagoLouisville
-21
Sep 8, 2026ArrivedChicagoLouisville
-27
Sep 7, 2026ArrivedPortlandNewark
45
Sep 6, 2026ArrivedPortlandNewark
-17
Sep 5, 2026ArrivedPortlandNewark
-10
Sep 4, 2026ArrivedPortlandNewark
3

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