PDX (Portland) to IAH (Houston) flights arrive on time 87% of the time. The most reliable airline on this route is United Airlines at 89%. The average delay is 85 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated August 2026.PDX → IAH
PDX (Portland) to IAH (Houston)
PDX → IAH on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
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This route is usually on time. About 87% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
United Airlines edges out Alaska Airlines on this route — 89% vs 82% on time.
Airline Comparison
United Airlines leads at 89% on time; Alaska Airlines trails at 82%.
Accurate?
Good to know
Departing from PDX
83% on timeExpect ~17 min sitting on the taxiway after your gate pushes back. PDX has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at IAH
79% on timeWhen flights into IAH are late, the average delay is 77 minutes. Build buffer if you have ground plans.
If connecting at IAH: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what United Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of PDX? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
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Data last updated August 2026. Source: Bureau of Transportation Statistics.