US flight delays, month by month
Data through May 2026
One report per month of US DOT data: the national on-time rate, the airlines that led and trailed, and the airports and routes with the worst delays. A new report appears with each monthly data refresh (BTS publishes with a ~2-month lag).
National on-time trend
All monthly reports
- May 2026 flight delays78%
- April 2026 flight delays80%
- March 2026 flight delays75%
- February 2026 flight delays80%
- January 2026 flight delays79%
- December 2025 flight delays73%
- November 2025 flight delays79%
- October 2025 flight delays80%
- September 2025 flight delays83%
- August 2025 flight delays77%
- July 2025 flight delays71%
- June 2025 flight delays71%
- May 2025 flight delays76%
- April 2025 flight delays80%
- March 2025 flight delays80%
- February 2025 flight delays79%
- January 2025 flight delays81%
- December 2024 flight delays79%
- November 2024 flight delays85%
- October 2024 flight delays87%
- September 2024 flight delays84%
- August 2024 flight delays76%
- July 2024 flight delays70%
- June 2024 flight delays75%
Based on 14,111,289 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.