KLM cancelled dozens of flights on Monday after ground staff at Amsterdam's Schiphol airport staged a two-hour strike in a dispute over pay.
The strike was called after a deadline to reach a new pay agreement between the airline and the trade union expired on Friday.
The union’s demands include an 8 per cent pay rise spread over two years, more full-time contracts and a more regular shift rota.
On Thursday, KLM offered a 6-7 per cent pay rise over three years, which the unions rejected.

Five killed in Nigeria mosque attack, police say
Helicopter crash on Tanzania's Mount Kilimanjaro kills five, aviation authority says
UK, Canada, Germany and others condemn Israel's West Bank settlement plan
Discovery of a million more potential Epstein documents delays further releases
Russia plans nuclear power plant on the moon within a decade
