UA4425United Airlines · ORD → SDF
live · 20m ago
Route confirmed United Airlines

UA4425 ChicagoORD · 15:00 LouisvilleSDF · 17:40

UA4425 by United Airlines flies from Chicago (ORD) to Louisville (SDF).

Right nowNext departure today Operates daily
15:00

scheduled from ORD

Typical gate push−5 minmedian posted departure
Typical arrival−28 minmedian over 4 operations
Wins back in air~23 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
10-24
−5 gate · −38 arrival
10-23
−7 gate · −39 arrival
10-22
−5 gate · −28 arrival
10-21
−7 gate · −20 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
ORDChicagoOn-time likelyORD delay board →
SDFLouisvilleOn-time likelySDF delay board →
ORD→SDFevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
43%Chance of 15+ min delay
2.6%Chance of cancellation
+22 minAvg hub delay right now

Driven mainly by ORD (Chicago), currently flying LIFR (low instrument). For this route and airline, under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Chicago to Louisville flights today

same route · United Airlines
UA1182departs 06:50
UA3672departs 06:55
UA5473departs 10:35
UA5692departs 10:39
UA5728departs 10:39
UA3605departs 16:30

If UA4425 is cancelled, these are the other United Airlines nonstop flights from Chicago to Louisville on the same day, with scheduled departure times in ORD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How UA4425 actually runs

Pro Flight Search has tracked every published board update for UA4425 across the ORD and SDF boards: schedule changes, gate pushes and actual clocks. Usually lands ~26 min early. Based on 4 confirmed landings · 4/4 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how UA4425 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
10-24ORD 15:00 14:55 (−5)SDF 17:40 17:02 (−38)
10-23ORD 15:00 14:53 (−7)SDF 17:40 17:01 (−39)
10-22ORD 15:00 14:55 (−5)SDF 17:40 17:12 (−28)
10-21ORD 15:00 14:53 (−7)SDF 17:40 17:20 (−20)

Aircraft

Recent tails: N556GJ, N569GJ, N549GJ, N562GJ.

Board clocks recorded as ORD and SDF published them.

Planning around UA4425? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — UA4425 Chicago to Louisville on-time performance, measured from the ORD and SDF airport boards.

Canonical URL
https://proflightsearch.com/flight/UA4425
How we measure this →