UA1729 DEN → SEA

United Airlines · Denver, CO to Seattle, WA · 86 flights observed, 2025-09-25 to 2026-01-05 · 1,024 mi

This flight's reliability varies a lot by day of week — 92% on-time on Sundays vs. 54% on Saturdays.

UA1729 covers more than one route in the data window — the stats below are for DEN → SEA, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
83%
Median delay
-6 min
90th percentile
+27 min
Cancellation rate
0%

How often is UA1729 on time?

Across 86 flights on DEN → SEA from 2025-09-25 to 2026-01-05, UA1729 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +27 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time7183%
16-30 min78%
31-60 min56%
61-120 min22%
2+ hrs11%

Performance by month

MonthFlightsOn-timeAvg delay
2025-09683%-8 min
2025-103187%-1 min
2025-112983%+7 min
2025-121573%+5 min
2026-01580%+3 min

Performance by day of week

DayFlightsOn-time
Mon1385%
Tue1182%
Wed1191%
Thu1292%
Fri1385%
Sat1354%
Sun1392%

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