UA4052United Airlines · IAH → SDF
live · 19m ago
Route confirmed United Airlines

UA4052 HoustonIAH · 18:33 LouisvilleSDF · 21:58

UA4052 by United Airlines flies from Houston (IAH) to Louisville (SDF) for the Sat, Oct 31 departure.

Right nowEn route to Louisville · off blocks 18:53 · 20 min late
En route

en route from IAH to SDF

En routeUA4052 · position estimated
IAHHoustonSDFLouisville
Estimated from the boards

Board estimate · gate and arrival times. Off blocks 18:53.

Typical gate push+8 minmedian posted departure

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
10-31
+20 gate
10-30
+20 gate
10-29
−4 gate
10-28
−4 gate

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
IAHHoustonOn-time likelyIAH delay board →
SDFLouisvilleOn-time likelySDF delay board →
IAH→SDFevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
33%Chance of 15+ min delay
2.2%Chance of cancellation
+5 minTypical airport delay in this weather

Conditions at IAH and SDF are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records 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 →

Tomorrow on this route

Forecast

Houston to Louisville with United Airlines · Sun 1 Nov, local date

Outlook: about usual
Chance a departure is cancelled
0.3%0.9× usual
Chance a departure leaves 60+ min late
5.2%1.2× usual

Forecast weather: 52% chance of fog at Houston

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 3 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

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 Houston to Louisville flights today

same route · United Airlines
UA3990departs 09:47
UA3985departs 16:32
UA4050departs 17:10
UA3235departs 17:45
UA3236departs 18:50
UA3237departs 19:45

If UA4052 is cancelled, these are the other United Airlines nonstop flights from Houston to Louisville on the same day, with scheduled departure times in IAH local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How UA4052 actually runs

Pro Flight Search has tracked every published board update for UA4052 across the IAH and SDF boards: schedule changes, gate pushes and actual clocks. Usually departs ~8 min late. Based on 4 confirmed departures · 2/4 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how UA4052 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
10-31IAH 18:33 18:53 (+20)SDF 21:58
10-30IAH 18:33 18:53 (+20)SDF 21:58
10-29IAH 18:33 18:29 (−4)SDF 21:58
10-28IAH 18:33 18:29 (−4)SDF

Board clocks recorded as IAH and SDF published them.

Planning around UA4052? 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: UA4052 Houston to Louisville on-time performance, measured from the IAH and SDF airport boards.

Canonical URL
https://proflightsearch.com/flight/UA4052
How we measure this →