UA4043United Airlines · IAH → SAT
live · 29m ago
Route confirmed United Airlines

UA4043 HoustonIAH San AntonioSAT

UA4043 by United Airlines flies from Houston (IAH) to San Antonio (SAT).

Right nowNext departure today Operates daily
19:55

scheduled from IAH

The route today

live boards
IAHHoustonOn-time likelyIAH delay board →
SATSan AntonioHigh riskSAT delay board →
IAH→SATevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
27%Chance of 15+ min delay
3.0%Chance of cancellation
+1 minTypical airport delay in this weather

Conditions at IAH and SAT 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 at Houston

Forecast

Mon 16 Nov, local date

High17°Clikely 15°C to 20°C
Low9°Clikely 7°C to 11°C
  • 87% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at SAT

Forecast

Mon 16 Nov, local date

High15°Clikely 13°C to 18°C
Low9°Clikely 7°C to 11°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · 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 San Antonio flights today

same route · United Airlines
UA2250departs 07:20
UA1371departs 09:35
UA341departs 12:05
UA6287departs 12:05
UA697departs 14:30
UA1186departs 16:55

If UA4043 is cancelled, these are the other United Airlines nonstop flights from Houston to San Antonio 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 UA4043 actually runs

Pro Flight Search has tracked every published board update for UA4043 across the IAH and SAT boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at IAH and SAT.

The verdict above is that record speaking, so it reflects how UA4043 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA4043? 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: UA4043 Houston to San Antonio on-time performance, measured from the IAH and SAT airport boards.

Canonical URL
https://proflightsearch.com/flight/UA4043
How we measure this →