UA4004 AUS → IAH

United Airlines · Austin, TX to Houston, TX · 41 flights observed, 2026-05-21 to 2026-06-30 · 140 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is +3 min, while the worst 10% run +114 min or later.

UA4004 covers more than one route in the data window — the stats below are for AUS → IAH, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
71%
Median delay
+3 min
90th percentile
+114 min
Cancellation rate
0%

How often is UA4004 on time?

Across 41 flights on AUS → IAH from 2026-05-21 to 2026-06-30, UA4004 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +114 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time2971%
16-30 min25%
31-60 min25%
61-120 min512%
2+ hrs37%

Performance by month

MonthFlightsOn-timeAvg delay
2026-051182%+21 min
2026-063067%+30 min

Performance by day of week

DayFlightsOn-time
Mon667%
Tue667%
Wed580%
Thu683%
Fri650%
Sat683%
Sun667%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…