UA5399 COS → DEN

United Airlines · Colorado Springs, CO to Denver, CO · 49 flights observed, 2025-07-01 to 2025-08-18 · 73 mi

This flight's reliability varies a lot by day of week — 100% on-time on Tuesdays vs. 43% on Thursdays.

UA5399 covers more than one route in the data window — the stats below are for COS → DEN, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
71%
Median delay
-3 min
90th percentile
+80 min
Cancellation rate
0%

How often is UA5399 on time?

Across 49 flights on COS → DEN from 2025-07-01 to 2025-08-18, UA5399 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +80 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3571%
16-30 min48%
31-60 min36%
61-120 min48%
2+ hrs36%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073168%+23 min
2025-081878%+18 min

Performance by day of week

DayFlightsOn-time
Mon786%
Tue7100%
Wed771%
Thu743%
Fri757%
Sat771%
Sun771%

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