Data · Flight delays

Flight Delays & On-Time Performance

U.S. DOT BTS On-Time Performance — reported through 2026-05.

National delay causes (last 12 months)

  • Air carrier33.1%
  • Extreme weather5.9%
  • National Aviation System21.3%
  • Security0.2%
  • Late-arriving aircraft39.5%

Airlines by on-time performance

Airports by on-time performance

On-time = arrival within 15 minutes of schedule, per U.S. DOT definitions. Source: Bureau of Transportation Statistics (public domain). Delay-cause attribution is reported by carriers since June 2003.

Source: U.S. DOT Bureau of Transportation Statistics, On-Time Performance · United States Government public domain.