Skip to content
Sign up

United Airlines

Is UA4423 delayed?

No delay reported — UA4423 is expected in Chicago at 06:57 on Sep 26, 39 min early. Over its last 25 recorded arrivals, 4 landed more than 15 min late.

Estimated arrivalLast reported

39 min early

This update may be out of date. Check with your airline.

Update time unavailable

Departure

St Louis

STL

Actual

Scheduled 11:00

Sep 26

Arrival

Chicago

ORD

Estimated

Scheduled 07:36

Sep 26

Times shown in airport local time

Service date: · Scheduled departure date (UTC)

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual

Arrival · UTC

Scheduled
Estimated
Actual
Not available
View this flight’s market

Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.

Recent arrivals

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

  • STL → ORD

    40 min early

  • STL → ORD

    38 min early

  • ORD → CAE

    9 min early

  • STL → ORD

    29 min early

  • STL → ORD

    49 min late
Flight history and details

Aug 27, 2026 — Sep 26, 2026

Observed arrivals
25
Arrivals over 15 minutes late
4
Observed cancellations
2
Observed occurrences
28

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

UA4423 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 25, 2026ArrivedSt LouisChicago
-40
Sep 24, 2026ArrivedSt LouisChicago
-38
Sep 23, 2026ArrivedChicagoColumbia
-9
Sep 23, 2026ArrivedSt LouisChicago
-29
Sep 21, 2026ArrivedSt LouisChicago
49
Sep 20, 2026ArrivedChicagoColumbia
-29
Sep 20, 2026ArrivedSt LouisChicago
28
Sep 19, 2026ArrivedChicagoColumbia
348
Sep 19, 2026CancelledSt LouisChicagoNot available
Not available
Sep 18, 2026ArrivedSt LouisChicago
-35
Sep 17, 2026CancelledSt LouisChicagoNot available
Not available
Sep 16, 2026ArrivedChicagoColumbia
-14
Sep 16, 2026ArrivedSt LouisChicago
-21
Sep 15, 2026ArrivedChicagoColumbia
-17
Sep 14, 2026ArrivedSt LouisChicago
-20
Sep 13, 2026ArrivedSt LouisChicago
-15
Sep 12, 2026ArrivedChicagoColumbia
-36
Sep 12, 2026ArrivedSt LouisChicago
-11
Sep 11, 2026ArrivedSt LouisChicago
-18
Sep 10, 2026ArrivedSt LouisChicago
-18
Sep 9, 2026ArrivedChicagoColumbia
-63
Sep 9, 2026ArrivedSt LouisChicago
-6
Sep 8, 2026ArrivedCorpus ChristiHouston
8
Sep 7, 2026ArrivedSt LouisChicago
-20
Sep 6, 2026ArrivedSt LouisChicago
-20
Sep 5, 2026ArrivedSt LouisChicago
140
Sep 4, 2026ArrivedSt LouisChicago
-24

Essential cookies keep the site running; Google receives cookie-free usage measurements before analytics consent. Privacy policy