As of early 2026, there are no Boeing 737-100 aircraft remaining in commercial or active service. The 737-100 was the original, shortest variant of the 737 family, and only 30 units were ever produced between 1967 and 1969. The last 737-100 to fly was a VIP-configured aircraft used by the Mexican Air Force, which was retired and eventually scrapped around 2006. The very first 737 ever built, known as NASA 515 (N73700), was retired in 2003 after a long career as a flight research vehicle. Today, the only way to "see" a 737-100 is to visit a museum; the NASA 515 prototype is on permanent static display at the Museum of Flight in Seattle, Washington. Its successors, the 737-200 and subsequent "Classic" and "NG" generations, continue to fly in large numbers, but the original "-100" is now a piece of aviation history.
As of the most recent information available, there are no Boeing 737-100 aircraft still in active commercial service. The 737-100 was the first variant of the Boeing 737 series, introduced in 1967, and only 30 were ever produced. Over time, these aircraft were phased out due to advancements in technology, more efficient models, and stricter environmental and noise regulations.
The last known commercial operator of the 737-100 was NASA, which used a modified version for research purposes. However, even that aircraft has since been retired. Some 737-100s may still exist in museums or private collections, but they are not flying in regular service.
If you’re interested in seeing a 737-100, you might visit aviation museums where historical aircraft are preserved.