How Many Boeing 707s Are Left?

How many Boeing 707s are left in the world today? While once a symbol of the Jet Age, the Boeing 707 is now an increasingly rare sight. Still, the aircraft has not disappeared entirely. Understanding how many of these jets remain, and in what capacity, gives insight into aviation's past, present, and the long shadows cast by technological icons and symbols of the golden Jet Age.

Developed in the 1950s and first flown in 1957, the Boeing 707 was the aircraft that launched the commercial jet era. It revolutionized long-distance travel, fueled global airline growth, and influenced aircraft design for decades. Although retired from commercial passenger service, its resilient and adaptable airframe found new roles in military service. In this article, we will examine the current status of Boeing 707s, including the number of airworthy planes, their operators, the roles they serve, and how a passenger jet nearly 70 years old continues to fly missions in the 21st century.

How Many Boeing 707s Are Still Airworthy?

As of today, there are 79 active Boeing 707s remaining in service worldwide, according to data from the ch-aviation database. None of them are in commercial passenger service, and all currently serve military or government roles. The last known passenger Boeing 707 flight was operated by Saha Airlines of Iran in 2013, marking the end of commercial passenger service for this iconic aircraft.

Of the 79 airworthy jets, the most significant operators are the United States Air Force and United States Navy, which utilize the aircraft for airborne warning and control (E-3 Sentry), airborne communications relay (E-6B Mercury), and other specialized roles, or as the most common military derivative of a Boeing 707: KC-135 Stratotanker, used for aerial refueling. The NATO E-3A Component, based in Geilenkirchen, Germany, operates 14 aircraft, including training and logistics configurations. Additional operators include the air forces of France, Chile, India, Israel, Iran, and Saudi Arabia, as well as the Congo Presidential Flight and a private refueling contractor from the US, Omega Air.

The continued relevance of the Boeing 707 is mainly due to its engineering strength and adaptability. Its load capacity, combined with generous internal space, made it ideal for conversion to AWACS, tanker, and cargo missions. Several aircraft, particularly those in the US Navy, have been upgraded with new engines (CFM56), digital avionics, and modern mission systems. This transformation from commercial pioneer to strategic military asset is a rare example of long-term aerospace repurposing.

Who Still Flies The Boeing 707?

The United States Air Force operates the largest fleet of Boeing 707 variants, comprising a significant number of E-3B and E-3C AWACS variants, with 18 aircraft still in active service, and an impressive 396 KC-135 Stratotankers, as noted by the USAF. The E-3B and E-3C aircraft were delivered between 1976 and 1983 and are projected to remain in service until 2035, according to ch-aviation. The KC-135 record is much more impressive, as the aircraft may remain in service until 2050, as reported by the Aviationist, meaning that some aircraft will celebrate their 90th birthday in the air. Additionally, the United States Navy uses 16 E-6B Mercury aircraft, delivered between 1989 and 1992, which remain fully operational.

NATO’s E-3A Component, based in Geilenkirchen, Germany, maintains a fleet of 14 AWACS jets powered by PW JT3D engines. Each is slated for retirement in 2031, but NATO is currently exploring replacements. The French Air and Space Force operates three E-3F variants, all of which are powered by the quieter, more efficient CFM56 engines. These aircraft entered service in 1991–1992 and continue to fly regular missions for France and allied operations. France also operated a fleet of 15 C-135FR (a modified KC-135 for the French Air Force) for aerial refueling, but the last aircraft was retired on June 30, 2025, as reported by Simple Flying. The Boeing tanker fleet was replaced with a newer European-built Airbus A330 MRTT platform.

The list of airworthy Boeing 707s (excluding KC-135 Stratotanker):

Elsewhere, the Royal Saudi Air Force flies a mix of E-3 AWACS and KE-3A tanker variants with 13 active aircraft according to ch-aviation. The Israeli Air Force operates at least nine converted 707s for tanker and ELINT missions. The Islamic Republic of Iran Air Force continues to fly five 707-300C variants, many of which date back to deliveries made before the Islamic Revolution in the 1970s. India, Chile, and the Congo Presidential Flight round out the list, with Chile operating two former Royal Air Force aircraft and the Congo maintaining the world’s last active presidential 707.

Omega Air, a US-based defense contractor, continues to operate at least two 707-300C aircraft, both of which are converted passenger airliners. These aircraft serve as aerial refueling tankers for hire and are frequently used by NATO and US forces during training exercises. The presence of these aircraft in the private sector underlines the enduring utility of the Boeing 707 platform, even outside traditional military channels.

Why Is The Boeing 707 Still In Use?

The Boeing 707 remains in use today primarily because it offers a proven, cost-effective airframe that supports complex mission payloads. The structural robustness of the aircraft enables it to carry large radomes, refueling booms, and advanced communication or surveillance gear. Its long range and high endurance make it ideal for long-duration missions, such as airborne warning or relay.

Economically, the 707 remains competitive in specialized roles. For many countries, converting or maintaining existing 707s is significantly less expensive than procuring modern replacements, such as the Airbus A330 MRTT or Boeing 737 AEW&C. Additionally, maintenance and training pipelines are already well-established, particularly among large and rich operators like the USAF and NATO. These economic realities often outweigh the aircraft's age and the fact that is has four engines instead of two.

Technical upgrades have also helped extend the 707’s service life. In the case of the US Navy, Saudi Arabia, and France, CFM56 engines offer noise and fuel efficiency improvements over the original PW JT3D turbofans. New digital avionics, mission systems, and satellite communications packages allow 707 variants to interoperate with modern fleets. Without these enhancements, most of the current fleet would have been grounded decades ago.

The Final Commercial Flight And Civil Retirement

The Boeing 707's final commercial passenger flight was flown by Saha Airlines, an Iranian carrier owned by the military. In 2013, the last 707 flight marked the end of its scheduled civil operations. These aircraft were employed mainly in both civil and military service in Iran and continued to serve on domestic routes long after being phased out elsewhere.

These final civil aircraft were dated in every sense: equipped with noisy engines, basic interiors, and lacking modern amenities. Yet they held a nostalgic appeal and were a testament to Iran’s ability to maintain aging fleets under sanctions. Aviation blogger Sam Chui’s flight review of a Saha 707 captured the mix of fascination and anachronism that these aircraft represented in their final years. You can watch his trip report in the video below:

Though the passenger chapter ended in 2013, Iran continued to operate some 707s as cargo aircraft. In 2019, a tragic crash involving a military-operated 707 highlighted the risks of flying aging equipment. The aircraft mistakenly landed at the wrong airport and overran the runway. That accident served as a sobering reminder of the need for modern safety and navigation systems, effectively marking the end of the civilian era for the 707.

Challenges, Risks, And The Future

The Boeing 707 continues to play a vital role in military aviation, but it faces increasing operational and regulatory challenges. Spare parts are difficult to source, and many systems are no longer in production. Aircraft maintenance is labor-intensive, requiring specialized knowledge that is slowly disappearing as newer aircraft dominate global fleets.

Environmental regulations are also a growing concern. Most 707s still use legacy JT3D engines, which are loud and inefficient by modern standards. Aircraft with CFM56 upgrades fare better but still struggle to meet the noise and emissions standards required in many airspaces. Restrictions on older aircraft are likely to increase, further limiting where and how these jets can fly.

Looking forward, most military forces are evaluating replacements for their 707-based fleets. NATO is currently assessing its future AWACS capability, while the US Air Force is developing the Advanced Battle Management System (ABMS) to eventually replace the E-3 and E-8 fleets. As these newer platforms are fielded, the era of the 707 will finally draw to a close, but not before marking nearly 80 years of combined commercial and military service.

The Bottom Line

So, how many Boeing 707s are left? As of mid-2025, there are 79 active aircraft, excluding the KC-135 variant, all of which serve in military, government, or contracted roles. The aircraft’s transformation from commercial mainstay to global defense asset is a rare and remarkable legacy.

The continued use of the Boeing 707 reflects the enduring value of good engineering. While its age and inefficiencies are increasingly difficult to justify, for many operators it remains indispensable, at least for now. With the right upgrades and careful maintenance, it continues to fly essential missions that no other aircraft in their fleets can perform so far.

Eventually, the Boeing 707 will fade from active skies, but its influence will remain. As the jetliner that ushered in the modern age of air travel and reshaped military strategy, its story is far from forgotten. It will likely be remembered as one of the most versatile and important aircraft ever built.