UA4052United Airlines · IAH → SDF
live · 31m ago
Route confirmed United Airlines

UA4052 HoustonIAH · 18:45 LouisvilleSDF · 22:10

UA4052 by United Airlines flies from Houston (IAH) to Louisville (SDF) for the Thu, Oct 15 departure.

Right nowAwaiting arrival in Louisville · off blocks 19:33 · 48 min late
00:14

estimated arrival at SDF · local time · past this estimate · waiting on the board

En routeUA4052 · position estimated
IAHHoustonSDFLouisville
Estimated from the boardsarr 00:14

Board estimate · gate and arrival times. Off blocks 19:33.

Typical gate push+48 minmedian posted departure
Typical arrival+124 minmedian over 1 operations

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
35%Chance of 15+ min delay
2.6%Chance of cancellation
+7 minAvg hub delay right now

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. 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 Houston to Louisville flights today

same route · United Airlines
UA3990departs 09:47
UA3985departs 16:32
UA3234departs 21:00

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 posting a delay still operate — rebooking usually only beats a very large posted delay. 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. Early read — pattern not clear yet. Only 2 completed legs so far: departed +48 min. Not enough to call it.

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
10-15IAH 18:45 19:33 (+48)SDF 22:10 00:14 (+124)
10-14IAH 18:45 18:39 (−6)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 →