As of mid-2025, there are 79 Boeing 707 aircraft still in service worldwide, though none remain in commercial passenger operations. These planes have been adapted for military and government roles, with the United States Air Force and Navy being among the largest operators. "The last known passenger Boeing 707 flight was operated by Saha Airlines of Iran in 2013," marking the end of its era as a commercial airliner.
The Boeing 707's engineering strength and adaptability have allowed it to serve various military functions. Its airframe is well-suited for conversion into roles such as airborne warning and control systems (AWACS) or aerial refueling tankers. The United States Air Force operates numerous E-3B and E-3C AWACS variants, along with a significant fleet of KC-135 Stratotankers. These aircraft are projected to remain operational until at least 2035.
NATO maintains a fleet of AWACS jets based in Geilenkirchen, Germany, while other countries like France, Saudi Arabia, Israel, Iran, India, Chile, and Congo also operate different versions of the aircraft. Omega Air serves as a private contractor using converted 707s for aerial refueling.