The pilots union said that with major global restrictions on air travel still in place "now is not the time to remove the furlough lifeline".
According to analysis of HMRC, CJRS and PAYE figures carried out by Balpa, air transport tops the list of industry groups with the highest rates of jobs being put on furlough.
As of 31 July, 51% of air transport workers were reportedly on furlough.
BALPA acting general secretary, Martin Chalk, said the statistics show that air transport is still "right in the grip" of the Covid crisis.
