MDT (Harrisburg) to ORD (Chicago) flights arrive on time 80% of the time. The most reliable airline on this route is United Airlines at 87%. The average delay is 71 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated March 2026.MDT → ORD
MDT (Harrisburg) to ORD (Chicago)
MDT → ORD on-time performance by month
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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 airline (crew, maintenance, or boarding).
Accurate?
United Airlines is significantly more reliable on this route at 87% on time vs SkyWest Airlines at 72%.
Airline Comparison
United Airlines leads at 87% on time; SkyWest Airlines trails at 72%.
Accurate?
Good to know
Departing from MDT
81% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. MDT has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at ORD
80% on timeWhen flights into ORD are late, the average delay is 76 minutes. Build buffer if you have ground plans.
If connecting at ORD: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.