A PPU ballot of Virgin Atlantic members closed at midday on Friday (December 7) with 71.5% of the 72% turnout voting in favour of strike action.
The PPU is now planning a series of one to four-day strikes starting December 22.
Its proposed walkouts run December 22-25, December 30 to January 2 and January 4-7, inclusive.
Spokesperson Steve Johnson said the PPU had been “shut out” of Virgin’s negotiations over proposed changes to pilots’ pension schemes and a wider benefits review.
He also blasted the airline for its failure to recognise the PPU, which is understood to represent around 400 of Virgin’s 965 pilots.