MADRID: Several thousand protesters are inside the largest terminal of Madrid's international airport - blowing whistles and air horns in a deafening demonstration against cuts planned by national carrier Iberia.

Passengers can get to their flights, but riot police are standing by to make sure the airport continues to function.

Iberia Lineas Aereas de Espana SA is planning 3,800 job cuts. Unions for ground staff and cabin crews are holding 15 days of strikes. The protesters from Iberia workers' unions converged on the airport Friday after a similar protest on Monday resulted in clashes between police and demonstrators.

There were no immediate reports of violence at the airport Friday. Iberia recommended travelers use public transport to make sure they could get inside the terminal.