- Advertisement -If you’re currently packing your bag for a flight tomorrow, you might want to stop what you’re doing. KLM ground staff have announced a six-hour strike on September 24. The strike will last from 6 AM to 12 PM and has already led to the cancellation of 119 flights. This marks the third strike in a row, and if ground staff’s demands aren’t met, another strike will follow next week on October 1, lasting from 6 AM to 2 PM. The strikes were initially organised by workers unions FNV and CNV, along with three other ground staff unions, the NOS writes.