Five Ryanair flights, three Aer Lingus and one British Airways chose to land in Belfast after high winds wreaked havoc.
An Aer Lingus flight from Copenhagen landed in Belfast, re-fuelled and tried to complete the onward journey to Dublin, but had to be diverted a second time back to Belfast, the International airport confirmed.
Alan Whiteside, Belfast International Airport's Operations Director, said they were more than capable of handling the diversions, which were the most the airport has had in any one night so far this year.
"We've been the airport of choice for diversions not just in Northern Ireland but across the entire island.
"We operate a 24-hour a-day airport and have the personnel, space and capacity to accommodate airlines if they have to seek shelter from inclement weather.
"Our scheduled services continued as normal as we found space on our apron for the eleven aircraft," Mr Whiteside added.
"In total, we dealt with well over 1,000 passengers who weren't able to complete their journey to Dublin from GB and mainland European airports."