UA1356 DEN → BOS

United Airlines · Denver, CO to Boston, MA · 155 flights observed, 2026-01-06 to 2026-06-30 · 1,754 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -6 min, while the worst 10% run +66 min or later.

UA1356 covers more than one route in the data window — the stats below are for DEN → BOS, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
74%
Median delay
-6 min
90th percentile
+66 min
Cancellation rate
3%

How often is UA1356 on time?

Across 155 flights on DEN → BOS from 2026-01-06 to 2026-06-30, UA1356 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +66 min or later. 3% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time11174%
16-30 min107%
31-60 min139%
61-120 min128%
2+ hrs53%

Performance by month

MonthFlightsOn-timeAvg delay
2026-012588%-8 min
2026-022572%+11 min
2026-033177%+17 min
2026-042966%+7 min
2026-051182%-7 min
2026-063063%+21 min

Performance by day of week

DayFlightsOn-time
Mon2167%
Tue2282%
Wed2268%
Thu2273%
Fri2282%
Sat2259%
Sun2085%

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