Fliegerstaffel 20 was a Swiss Air Force squadron equipped with Hawker Hunter aircraft.

In 1946, the Fliegerkompanie units were split up into pilots and ground crew groups, which resulted in the foundation of Fliegerstaffel 20.

Three DH-112 Venom of the Fliegerstaffel 20 collided in the clouds near the Furka Pass, at the southern and nord Ridge of the Blauberg, when they tried to fly into the Rhone Valley in the course of maneuvers of the No 3 Swiss Mountain Corps.

The flight operations on their war airfield at Mollis were usually carried out from Hardened aircraft shelters.

As it was a militia squadron, the pilots would fly also from most other Swiss air fields during training courses, while Mollis was active only a few weeks each year.