Pilots from Air Berlin have announced they will strike after months of unsuccessful wage discussions.

The date of the strike is yet to be set, but the union for the pilots said passengers would be warned ahead of time so they can adjust their plans.

The German pilots’ trade organisation Vereinigung Cockpit is calling for the “medium-term introduction of industry standard wages”. The union also asks that its pilots be compensated similarly to how they are at other airlines such as Germanwings and Tuifly.

The union said the pilots had been “forced to take this step” following months of unsuccessful negotiations.

They apologised to passengers for the decision over industrial action and said it was a “last resort”.

Air Berlin said it regretted the pilots’ chosen course of action, adding that it would do everything possible to reduce flight disruptions as a result of strikes.

“As things stand now, all flights will be going ahead as planned,” the airline said.