Historical on-time performance
Houston to Portland
Flights on IAH–PDX arrive on time 80% of the time over the last 12 months.
based on 1,129 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- United AirlinesOn-time80%Medianon timep9040 minCancel0.8%Flights885
- Alaska AirlinesOn-time80%Medianon timep9035 minCancel1.2%Flights244
Why flights run late
Delay causes
- Airline25%
- Weather14%
- Air traffic (NAS)11%
- Late aircraft50%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline40%
- Weather60%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 10 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IAH → PDX
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 73% to 85% on time.
- Mornings85% on time · p90 25 min · 971 flights
- Middays82% on time · p90 40 min · 125 flights · limited
- Evenings75% on time · p90 50 min · 549 flights
- Afternoons75% on time · p90 60 min · 449 flights
- Overnights73% on time · p90 45 min · 890 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 80% on time.
- Tuesdays80% on time · p90 30 min · 418 flights
- Sundays79% on time · p90 45 min · 431 flights
- Fridays79% on time · p90 40 min · 433 flights
- Wednesdays78% on time · p90 35 min · 424 flights
- Saturdays77% on time · p90 40 min · 421 flights
- Mondays77% on time · p90 50 min · 427 flights
- Thursdays76% on time · p90 45 min · 430 flights
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