The Boeing 737-800 is widely considered one of the most successful and reliable commercial aircraft ever built, serving as the backbone of global short-to-medium haul aviation in 2026. Part of the Next Generation (NG) series, it boasts a staggering reliability rate and has been delivered to nearly every major airline, including Ryanair, Southwest, and American Airlines. It is "good" because of its exceptional fuel efficiency for its class and its "robust" mechanical systems that use traditional hydro-mechanical flight controls rather than the complex fly-by-wire systems found on newer jets. While it lacks the ultra-modern software of the 737 MAX, it also avoids many of that model's initial software-related controversies. However, as the fleet ages in 2026, the 737-800 has faced scrutiny for structural issues like "pickle fork" cracks, requiring rigorous maintenance overhauls. Despite these aging pains, pilots generally praise it for its predictable handling and "classic" feel, and passengers appreciate the modern "Sky Interior" retrofits that provide larger overhead bins and customizable LED lighting.