UA1851 IAH → LAX

United Airlines · Houston, TX to Los Angeles, CA · 42 flights observed, 2025-09-25 to 2025-12-01 · 1,379 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -6 min, while the worst 10% run +59 min or later.

UA1851 covers more than one route in the data window — the stats below are for IAH → LAX, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
79%
Median delay
-6 min
90th percentile
+59 min
Cancellation rate
0%

How often is UA1851 on time?

Across 42 flights on IAH → LAX from 2025-09-25 to 2025-12-01, UA1851 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +59 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3379%
16-30 min37%
31-60 min12%
61-120 min37%
2+ hrs25%

Performance by month

MonthFlightsOn-timeAvg delay
2025-09450%+29 min
2025-102090%+2 min
2025-111771%+11 min
2025-121100%-3 min

Performance by day of week

DayFlightsOn-time
Mon683%
Tue1100%
Wed5100%
Thu978%
Fri967%
Sat250%
Sun1080%

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