Investing.com -- Bank of America reported that third quarter 2026 domestic airline capacity growth remains at 0.3%, with minimal weekly changes as the quarter approaches.

Among network carriers, American Airlines maintains the highest domestic and system growth for the second and third quarters of 2026. The airline's third quarter domestic capacity is expected to increase 5.4%, while system capacity is projected to grow 4.0%.

Frontier Airlines leads domestic growth with a 23.3% increase, followed by JetBlue Airways at 14.0%. JetBlue is reducing Latin America capacity by 4.5%, while Frontier's Latin America capacity is growing 12.8%. This results in system capacity growth of 21.7% for Frontier and 6.5% for JetBlue.

United Airlines reduced its Atlantic capacity growth by 40 basis points to negative 5.6% for the third quarter, matching the second quarter's negative 5.5%. JetBlue also trimmed Latin America capacity this week.

Total third quarter Atlantic capacity growth stands at negative 1.1%, while Pacific capacity is up 3.3%. Latin America growth was reduced by 40 basis points to negative 3.2%.

TSA throughput through June 14 was down 0.2% year-over-year on a trailing seven-day basis. Over the past four weeks, TSA throughput growth has been flat on average. June throughput to date is up 0.2%, ahead of May's negative 0.5%.