UA1281 DEN → SAN

United Airlines · Denver, CO to San Diego, CA · 309 flights observed, 2025-07-01 to 2026-06-30 · 853 mi

UA1281 covers more than one route in the data window — the stats below are for DEN → SAN, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
85%
Median delay
-6 min
90th percentile
+42 min
Cancellation rate
1%

How often is UA1281 on time?

Across 309 flights on DEN → SAN from 2025-07-01 to 2026-06-30, UA1281 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +42 min or later. 1% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time25985%
16-30 min114%
31-60 min176%
61-120 min134%
2+ hrs62%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073060%+32 min
2025-083171%+16 min
2025-093080%+8 min
2025-102592%-2 min
2025-121694%-14 min
2026-012592%-12 min
2026-022886%-1 min
2026-033093%-12 min
2026-043097%-5 min
2026-053190%-1 min
2026-063083%+10 min

Performance by day of week

DayFlightsOn-time
Mon4384%
Tue4680%
Wed4484%
Thu4281%
Fri4482%
Sat4491%
Sun4391%

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