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Airport Operational Performance · ORD

Chicago On-Time Performance

Historical arrival and departure reliability for Chicago, IL (ORD), covering 44 reported months.

Latest data: Jun 2026Source: DOT Air Travel Consumer ReportFlightline Intel Beta
Latest arrival OTP
71.3%
+1.0 points year over year
Latest departure OTP
70.8%
+0.6 points year over year
National arrival rank
#228
of 351 airports · -1.5 pts vs. national avg
12-month average
70.6%
Arrival OTP · departures 70.9%

Historical On-Time Performance

Monthly arrival and departure performance, with trailing 12-month averages.

Seasonal Arrival Pattern

Average arrival OTP by calendar month across the loaded history.

Historical Records

MeasureResult
Best monthFeb 2024 · 87.6%
Weakest monthJul 2025 · 63.0%
Longest improvement streak4 month-to-month gains
Longest decline streak3 month-to-month declines
Latest reported operations62,743

Latest 12 Months

Newest month appears first.

MonthArr.Dep.ArrivalsDepartures
Jun 202671.3%70.8%31,36931,374
May 202677.5%75.9%33,73733,733
Apr 202670.4%70.9%33,19933,206
Mar 202663.7%65.0%31,37331,373
Feb 202676.7%76.8%25,53525,538
Jan 202667.9%67.9%25,11925,131
Dec 202564.1%63.1%27,77227,790
Nov 202568.3%71.3%28,71728,703
Oct 202573.8%76.6%31,08331,096
Sep 202579.1%78.3%28,85828,867
Aug 202570.9%71.0%30,09830,090
Jul 202563.0%62.9%30,50730,503
Flightline Intel readout: Chicago recorded 71.3 percent on-time arrivals and 70.8 percent on-time departures in Jun 2026. Its trailing 12-month arrival average stands at 70.6 percent. The strongest month in the current record was Feb 2024 at 87.6 percent, while the weakest was Jul 2025 at 63.0 percent.