UA1023 SFO → DEN

United Airlines · San Francisco, CA to Denver, CO · 24 flights observed, 2026-03-05 to 2026-03-28 · 967 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -5 min, while the worst 10% run +60 min or later.

UA1023 covers more than one route in the data window — the stats below are for SFO → DEN, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
83%
Median delay
-5 min
90th percentile
+60 min
Cancellation rate
0%

How often is UA1023 on time?

Across 24 flights on SFO → DEN from 2026-03-05 to 2026-03-28, UA1023 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +60 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2083%
16-30 min00%
31-60 min14%
61-120 min313%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-032483%+7 min

Performance by day of week

DayFlightsOn-time
Mon3100%
Tue3100%
Wed333%
Thu475%
Fri475%
Sat4100%
Sun3100%

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