In 2026, many major airlines have shifted toward a stricter enforcement of the 22" x 14" x 9" (56 x 36 x 23 cm) standard. While the numerical dimensions haven't drastically changed for most carriers, the method of measurement has. Airlines are now strictly including wheels, handles, and bumpers in these measurements, and many have installed automated scanners at gates that flag bags exceeding limits by even a few millimeters. Budget carriers remain more restrictive, often capping free personal items at roughly 18" x 14" x 8". To ensure a high-value experience without surprise gate-check fees (which can now reach $100), travelers should measure their bags "edge-to-edge" before heading to the airport.