UA1770 STL → DEN

United Airlines · St. Louis, MO to Denver, CO · 15 flights observed, 2026-04-30 to 2026-05-20 · 770 mi

UA1770 covers more than one route in the data window — the stats below are for STL → DEN, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
53%
Median delay
+10 min
90th percentile
+139 min
Cancellation rate
0%

How often is UA1770 on time?

Across 15 flights on STL → DEN from 2026-04-30 to 2026-05-20, UA1770 arrived within 15 minutes of schedule 53% of the time. The median arrival delay was +10 min, and the worst 10% of flights arrived +139 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time853%
16-30 min17%
31-60 min320%
61-120 min00%
2+ hrs320%

Performance by month

MonthFlightsOn-timeAvg delay
2026-0410%+29 min
2026-051457%+41 min

Performance by day of week

DayFlightsOn-time
Mon333%
TueNo data—
Wed3100%
Thu367%
Fri333%
SatNo data—
Sun333%

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