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Airport Operational Performance · SEA

Seattle On-Time Performance

Historical arrival and departure reliability for Seattle, WA (SEA), covering 44 reported months.

Latest data: Jun 2026Source: DOT Air Travel Consumer ReportFlightline Intel Beta
Latest arrival OTP
76.9%
+5.4 points year over year
Latest departure OTP
74.0%
+2.3 points year over year
National arrival rank
#106
of 351 airports · +4.1 pts vs. national avg
12-month average
78.7%
Arrival OTP · departures 78.3%

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 · 87.0%
Weakest monthDec 2022 · 62.2%
Longest improvement streak4 month-to-month gains
Longest decline streak3 month-to-month declines
Latest reported operations30,796

Latest 12 Months

Newest month appears first.

MonthArr.Dep.ArrivalsDepartures
Jun 202676.9%74.0%15,39415,402
May 202681.9%79.8%14,56914,564
Apr 202685.1%84.4%12,86712,864
Mar 202675.1%75.1%12,83212,830
Feb 202684.1%83.3%10,99711,000
Jan 202679.6%78.5%11,93311,927
Dec 202568.7%72.0%13,01613,023
Nov 202580.4%82.1%12,61012,616
Oct 202580.5%81.4%13,85713,859
Sep 202583.8%83.2%14,56314,552
Aug 202575.2%74.7%15,97615,970
Jul 202573.1%71.2%16,57616,577
Flightline Intel readout: Seattle recorded 76.9 percent on-time arrivals and 74.0 percent on-time departures in Jun 2026. Its trailing 12-month arrival average stands at 78.7 percent. The strongest month in the current record was Feb 2024 at 87.0 percent, while the weakest was Dec 2022 at 62.2 percent.