UA646 PDX → IAH

United Airlines · Portland, OR to Houston, TX · 37 flights observed, 2025-10-26 to 2025-12-01 · 1,825 mi

This flight's reliability varies a lot by day of week — 100% on-time on Mondays vs. 60% on Thursdays.

UA646 covers more than one route in the data window — the stats below are for PDX → IAH, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
95%
Median delay
-15 min
90th percentile
+10 min
Cancellation rate
0%

How often is UA646 on time?

Across 37 flights on PDX → IAH from 2025-10-26 to 2025-12-01, UA646 arrived within 15 minutes of schedule 95% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived +10 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3595%
16-30 min25%
31-60 min00%
61-120 min00%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2025-106100%-17 min
2025-113093%-12 min
2025-121100%-25 min

Performance by day of week

DayFlightsOn-time
Mon6100%
Tue5100%
Wed5100%
Thu560%
Fri5100%
Sat5100%
Sun6100%

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