UA1440 DEN → MIA

United Airlines · Denver, CO to Miami, FL · 31 flights observed, 2025-09-25 to 2025-10-25 · 1,709 mi

This flight runs much more reliably at some times of day than others — 95% on-time departing 3–6pm vs. 56% departing 12–3pm.

UA1440 covers more than one route in the data window — the stats below are for DEN → MIA, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
84%
Median delay
-17 min
90th percentile
+58 min
Cancellation rate
0%

How often is UA1440 on time?

Across 31 flights on DEN → MIA from 2025-09-25 to 2025-10-25, UA1440 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -17 min, and the worst 10% of flights arrived +58 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2684%
16-30 min13%
31-60 min13%
61-120 min26%
2+ hrs13%

Performance by month

MonthFlightsOn-timeAvg delay
2025-09683%-15 min
2025-102584%+0 min

Performance by day of week

DayFlightsOn-time
Mon4100%
Tue425%
Wed4100%
Thu580%
Fri5100%
Sat580%
Sun4100%

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