Southwest on-time arrivals drop to 71.14% in September 2026

Southwest Airlines’ on‑time arrival rate fell to 71.14% in September 2026, down from 81.46% in September 2025, a decline of 10.32 percentage points.
The carrier’s completion factor for September 2026 was 99.62%, indicating a 0.38% cancellation rate, while its cancellation rate in August 2026 was 0.17%.