ORD (Chicago) to MKE (Milwaukee) flights arrive on time 68% of the time. The most reliable airline on this route is PSA Airlines at 88%. The average delay is 87 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated August 2026.ORD → MKE
ORD (Chicago) to MKE (Milwaukee)
ORD → MKE on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
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This route is delayed fairly often. About 68% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
PSA Airlines is significantly more reliable on this route at 88% on time vs null at 65%.
Airline Comparison
PSA Airlines leads at 88% on time; trails at 65%.
Accurate?
Good to know
Departing from ORD
75% on timeExpect ~22 min sitting on the taxiway after your gate pushes back. ORD has long runway queues.
TSA is currently ~33 min. Best time: 4 AM (about 5 min).
Arriving at MKE
79% on timeWhen flights into MKE are late, the average delay is 75 minutes. Build buffer if you have ground plans.
If connecting at MKE: TSA is ~18 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what PSA Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of ORD? 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 August 2026. Source: Bureau of Transportation Statistics.