ORD (Chicago) to PWM (Portland) flights arrive on time 80% of the time. The most reliable airline on this route is null at 85%. The average delay is 60 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated May 2026.ORD → PWM
ORD (Chicago) to PWM (Portland)
ORD → PWM on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
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This route is on time most of the time. About 80% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
null is significantly more reliable on this route at 85% on time vs Frontier Airlines at 36%.
Airline Comparison
leads at 85% on time; Frontier Airlines trails at 36%.
Accurate?
Good to know
Departing from ORD
80% on timeExpect ~20 min sitting on the taxiway after your gate pushes back. ORD has long runway queues.
TSA is currently ~34 min. Best time: 4 AM (about 5 min).
Arriving at PWM
81% on timeWhen flights into PWM are late, the average delay is 76 minutes. Build buffer if you have ground plans.
If connecting at PWM: TSA is ~11 min right now. Allow at least 60 minutes for a domestic connection.
PWM has a 2.8% cancellation rate — keep the airline app handy for rebooking.
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Data last updated May 2026. Source: Bureau of Transportation Statistics.