Latest arrival OTP
60.4%
-24.5 points year over year
Latest departure OTP
71.7%
-17.0 points year over year
National arrival rank
#342
of 347 airports · -17.2 pts vs. national avg
12-month average
66.6%
Arrival OTP · departures 71.0%

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 monthOct 2023 · 94.3%
Weakest monthDec 2025 · 53.6%
Longest improvement streak4 month-to-month gains
Longest decline streak4 month-to-month declines
Latest reported operations106

Latest 12 Months

Newest month appears first.

MonthArr.Dep.ArrivalsDepartures
May 202660.4%71.7%5353
Apr 202661.5%75.0%5252
Mar 202664.2%66.0%5353
Feb 202675.0%81.3%4848
Jan 202660.4%62.3%5353
Dec 202553.6%54.5%5655
Nov 202570.0%78.0%5050
Oct 202574.1%74.1%5454
Sep 202574.5%80.4%5151
Aug 202567.9%66.0%5353
Jul 202566.0%69.8%5353
Jun 202571.2%73.1%5252
Flightline Intel readout: Mason City recorded 60.4 percent on-time arrivals and 71.7 percent on-time departures in May 2026. Its trailing 12-month arrival average stands at 66.6 percent. The strongest month in the current record was Oct 2023 at 94.3 percent, while the weakest was Dec 2025 at 53.6 percent.