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Airport Operational Performance · IAD

Washington On-Time Performance

Historical arrival and departure reliability for Washington, DC (IAD), covering 44 reported months.

Latest data: Jun 2026Source: DOT Air Travel Consumer ReportFlightline Intel Beta
Latest arrival OTP
81.9%
+8.6 points year over year
Latest departure OTP
82.1%
+9.2 points year over year
National arrival rank
#60
of 351 airports · +9.1 pts vs. national avg
12-month average
81.5%
Arrival OTP · departures 82.3%

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 monthOct 2024 · 89.9%
Weakest monthJul 2025 · 68.4%
Longest improvement streak3 month-to-month gains
Longest decline streak3 month-to-month declines
Latest reported operations10,137

Latest 12 Months

Newest month appears first.

MonthArr.Dep.ArrivalsDepartures
Jun 202681.9%82.1%5,0845,053
May 202685.1%86.2%5,4495,474
Apr 202688.5%89.0%4,7794,843
Mar 202677.4%78.4%4,9184,983
Feb 202683.8%84.0%3,9834,037
Jan 202679.5%79.2%4,1944,248
Dec 202579.1%77.9%4,6494,676
Nov 202582.4%83.6%4,5574,589
Oct 202585.0%87.3%4,8504,854
Sep 202587.5%88.5%4,8114,815
Aug 202580.0%82.5%5,2005,201
Jul 202568.4%69.2%5,2445,248
Flightline Intel readout: Washington recorded 81.9 percent on-time arrivals and 82.1 percent on-time departures in Jun 2026. Its trailing 12-month arrival average stands at 81.5 percent. The strongest month in the current record was Oct 2024 at 89.9 percent, while the weakest was Jul 2025 at 68.4 percent.