UA1233 DEN → EWR

United Airlines · Denver, CO to Newark, NJ · 365 flights observed, 2025-07-01 to 2026-06-30 · 1,605 mi

UA1233 covers more than one route in the data window — the stats below are for DEN → EWR, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
76%
Median delay
-6 min
90th percentile
+38 min
Cancellation rate
2%

How often is UA1233 on time?

Across 365 flights on DEN → EWR from 2025-07-01 to 2026-06-30, UA1233 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +38 min or later. 2% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time27376%
16-30 min3811%
31-60 min257%
61-120 min134%
2+ hrs82%

Performance by month

MonthFlightsOn-timeAvg delay
2025-072966%+45 min
2025-083057%+12 min
2025-093070%+14 min
2025-103067%+9 min
2025-113087%+10 min
2025-123181%+6 min
2026-012979%-4 min
2026-022789%-8 min
2026-033073%+8 min
2026-043093%-15 min
2026-053190%-10 min
2026-063067%+11 min

Performance by day of week

DayFlightsOn-time
Mon4978%
Tue5288%
Wed5182%
Thu5171%
Fri5176%
Sat5275%
Sun5165%

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