UA1351 SEA → DEN

United Airlines · Seattle, WA to Denver, CO · 94 flights observed, 2026-03-29 to 2026-06-30 · 1,024 mi

This flight has a strong track record — on time 94% of the time, with a low cancellation rate.

UA1351 covers more than one route in the data window — the stats below are for SEA → DEN, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
94%
Median delay
-15 min
90th percentile
-1 min
Cancellation rate
0%

How often is UA1351 on time?

Across 94 flights on SEA → DEN from 2026-03-29 to 2026-06-30, UA1351 arrived within 15 minutes of schedule 94% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived -1 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time8794%
16-30 min11%
31-60 min22%
61-120 min22%
2+ hrs11%

Performance by month

MonthFlightsOn-timeAvg delay
2026-033100%-17 min
2026-043093%-12 min
2026-053194%-11 min
2026-062993%-10 min

Performance by day of week

DayFlightsOn-time
Mon13100%
Tue1479%
Wed1392%
Thu13100%
Fri13100%
Sat1392%
Sun1493%

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