UA4030 COS → IAH

United Airlines · Colorado Springs, CO to Houston, TX · 41 flights observed, 2026-05-21 to 2026-06-30 · 809 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -9 min, while the worst 10% run +111 min or later.

UA4030 covers more than one route in the data window — the stats below are for COS → IAH, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
75%
Median delay
-9 min
90th percentile
+111 min
Cancellation rate
0%

How often is UA4030 on time?

Across 41 flights on COS → IAH from 2026-05-21 to 2026-06-30, UA4030 arrived within 15 minutes of schedule 75% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +111 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3075%
16-30 min25%
31-60 min13%
61-120 min38%
2+ hrs410%

Performance by month

MonthFlightsOn-timeAvg delay
2026-051191%-7 min
2026-062969%+34 min

Performance by day of week

DayFlightsOn-time
Mon650%
Tue683%
Wed4100%
Thu667%
Fri667%
Sat683%
Sun683%

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