MIA (Miami) to PDX (Portland) flights arrive on time 67% of the time. The most reliable airline on this route is Alaska Airlines at 78%. The average delay is 78 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated October 2026.MIA → PDX
MIA (Miami) to PDX (Portland)
MIA → PDX on-time performance by month
23
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JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is delayed fairly often. About 67% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Alaska Airlines is significantly more reliable on this route at 78% on time vs American Airlines at 61%.
Airline Comparison
Alaska Airlines leads at 78% on time; American Airlines trails at 61%.
Accurate?
Good to know
Departing from MIA
76% on timeExpect ~20 min sitting on the taxiway after your gate pushes back. MIA has long runway queues.
TSA is currently ~25 min. Best time: 4 AM (about 5 min).
Arriving at PDX
83% on timeWhen flights into PDX are late, the average delay is 62 minutes. Build buffer if you have ground plans.
If connecting at PDX: TSA is ~24 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Alaska Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of MIA? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated October 2026. Source: Bureau of Transportation Statistics.