As tourism has gradually recovered from pandemic travel restrictions, labour disputes have spread around European airports.
Industrial action called for the week December 4-10 but could drag on.
But airport fees are due to rise in 2024.
aAircraft will be converted to either battery - or hydrogen-electric power.
An indication that the number of tourists in October increased.
Spain received more than 13 million British tourists in the first nine months of the year, 14.6% more than in the same period of 2022.
Inquiry has been launched amid ‘alarming’ concerns that it could cause massive disruption.
He pushed and kicked police officers.