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Airport Operational Performance · HLN

Helena On-Time Performance

Historical arrival and departure reliability for Helena, MT (HLN), covering 43 reported months.

Latest data: May 2026Source: DOT Air Travel Consumer ReportFlightline Intel Beta
Latest arrival OTP
92.7%
+8.9 points year over year
Latest departure OTP
97.6%
+11.8 points year over year
National arrival rank
#15
of 347 airports · +15.1 pts vs. national avg
12-month average
86.0%
Arrival OTP · departures 87.2%

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 monthMay 2023 · 96.4%
Weakest monthJan 2025 · 73.2%
Longest improvement streak3 month-to-month gains
Longest decline streak4 month-to-month declines
Latest reported operations248

Latest 12 Months

Newest month appears first.

MonthArr.Dep.ArrivalsDepartures
May 202692.7%97.6%124124
Apr 202695.8%95.8%120120
Mar 202684.7%90.3%124124
Feb 202689.3%92.0%112112
Jan 202689.4%95.9%123123
Dec 202587.7%87.7%122122
Nov 202588.2%85.8%127127
Oct 202591.9%89.3%149149
Sep 202588.7%86.7%150150
Aug 202574.8%76.8%155155
Jul 202574.5%77.8%153153
Jun 202574.7%70.7%150150
Flightline Intel readout: Helena recorded 92.7 percent on-time arrivals and 97.6 percent on-time departures in May 2026. Its trailing 12-month arrival average stands at 86.0 percent. The strongest month in the current record was May 2023 at 96.4 percent, while the weakest was Jan 2025 at 73.2 percent.