UA5851 ASE → LAX

United Airlines · Aspen, CO to Los Angeles, CA · 205 flights observed, 2025-07-01 to 2026-04-22 · 737 mi

UA5851 covers more than one route in the data window — the stats below are for ASE → LAX, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
81%
Median delay
-5 min
90th percentile
+52 min
Cancellation rate
2%

How often is UA5851 on time?

Across 205 flights on ASE → LAX from 2025-07-01 to 2026-04-22, UA5851 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +52 min or later. 2% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time16281%
16-30 min116%
31-60 min84%
61-120 min116%
2+ hrs74%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073083%+27 min
2025-083077%+11 min
2025-093087%+3 min
2025-102572%+46 min
2025-121362%+27 min
2026-01540%+43 min
2026-021573%+13 min
2026-0330100%-22 min
2026-042190%-15 min

Performance by day of week

DayFlightsOn-time
Mon2785%
Tue2886%
Wed2983%
Thu2986%
Fri2785%
Sat3070%
Sun2976%

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