From 1st To 6th: DOT Data Proves Delta Is No Longer America’s Most Reliable Airline

The results are in, and Delta Air Lines has been knocked off the podium as the United States’ most reliable airline. Data in the January 2026 Air Travel Consumer Report (published May 1, 2026) from the United States Department of Transportation reveals that Delta has fallen from first to sixth place in reliability metrics, a concerning reversal for a carrier that held the top spot for five consecutive years, according to aviation analytics company Cirium.