Representatives of the workers union said through megaphones that THAI staffs and passengers were not guinea pigs of the new airport.

All operations of domestic flights are scheduled to move to Suvannabhum Airport on September 15.

"We and the passengers are not the guinea pigs to test the new airport. If there is something wrong, THAI airline has to take all responsibilities," they said.

However Apinan Soommanaseranee, board executive member, told the protesting staffs that September 15 schedule will have to be met.

The domestic flights will have to be move to the new airport on the set date before the new airport be officially opened on September 28.