What was the first operational jet aircraft?

The Messerschmitt ME-262 is recognized as the first operational jet aircraft, having been introduced during World War II by Germany. It first took to the skies in 1941 and became operational in 1944, serving in various combat roles including fighter and bomber missions. Its design incorporated two jet engines, which were revolutionary for its time and paved the way for future developments in jet propulsion and aircraft design.

The ME-262's significance lies not only in its advanced technology but also in its impact on aerial warfare, as it was one of the first aircraft to offer jet speed, making it faster than its piston-engine contemporaries. Despite facing challenges such as resource shortages and technical issues during the war, the ME-262's advancements influenced the future trajectory of military aviation.

In contrast, the other aircraft listed, while significant in aviation history, were developed later or did not achieve operational status prior to the ME-262.