On 6 April, Luftwaffe dive-bombers and ground-attack fighters destroyed 26 of the Yugoslav Dorniers in the initial assault on their airfields, but the remaining aircraft were able to effectively hit back with numerous multi-ship attacks on German mechanized columns and upon Bulgarian airfields. By the end of the campaign total Yugoslav losses stood at four destroyed in aerial combat and 45 destroyed on the ground. Between 14th and 15th of April, the seven remaining Do 17K flew to Niksic airfield in Montenegro and took part in the evacuation of King Petar II and members of the Yugoslav government to Greece. During this operation, Yugoslav gold reserves were also airlifted to Greece by the seven Do 17s, as well as by Savoia Marchetti SM-79Ks and Aeroput Lockheed L-10 Electras but after completing their mission, five Do 17K were destroyed on the ground when Italian aircraft attacked the Greek-held Paramitia airfield. Only two Do 17Ks escaped destruction in Greece and later joined the British Royal Air Force (RAF) in the Kingdom of Egypt.
At 16:00 on the 15 April the C-in-C of Luftflotte 4, Generaloberst Alexander Löhr received orders from Hermann Göring to wind down the air-offensive and transfer the bulk of the dive-bomber force to support the campaign in Greece.
A total of 18 bomber, transport and maritime patrol aircraft (2 Dornier Do 17K, 4 Savoia Marchetti SM-79K, 3 Aeroput Lockheed L-10 Electra, 8 Dornier Do-22K and 1 Rogozarski SIM-XIV-H) succeeded in escaping to the Allied base in Egypt at the end of the campaign.