The Boeing B-17G was the main serial production variant of the famous "Flying Fortress" first produced in 1943. Using lessons learned from operating the previous B-17E/F models, several changes were made on the G model, with some carried from the troublesome F model. This included a pressurised cabin, the addition of a chin remote-controlled turret and improved cheek turret mount to counter frontal engagements, moving the right waist gunner position towards to front to increase the overall coverage, improved superchargers for high-altitude operation, and receiving the "Cheyenne" tail turret which increased protection and the field of fire for the tail gunner. Around 8,680 B-17Gs were built, with several airframes being converted as a testbed for various projects.

In the game since the start of the Open Beta Test prior to Update 1.27, the B-17G Flying Fortress, as the name suggests, is intended to be used as a high-altitude level bomber, designed to target enemy airfields and military bases. Compared to the early B-17E models, the B-17G is noticeably faster thanks to improved superchargers, allowing it to climb better and further at higher altitudes. The B-17G's defensive capabilities is also improved, with an addition of chin turret and revised gunner positions that effectively eliminating every blind spots around the plane. In addition, the B-17G also has access to extra wing hardpoints that allow it to carry an extra pair of 1,000 lb and 2,000 lb bombs. All of this allows the B-17G to perform the same job that the B-17E excels at even better than before; destroying ground targets while evading most enemy using altitude advantage, and giving a tough fight to anyone who manages to reach it. However, the B-17G still retains the critical weakness of the "Flying Fortress" family, namely its relatively weak tail, excessive wing loading that restrict its manoeuvrability, and its tendency to catch fire.