Shannon Airport says it handled 15 flights diverted from other airports because of the storm.
Shannon Airport Group says it remained fully operational throughout Sunday and overnight, running its normal schedule throughout.
It expects a normal flight schedule on Monday, but says it still remains available to facilitate more diversions if needed.
Cork Airport says flights are operating as normal on Monday.
Ten flights were cancelled yesterday while six flights were diverted because of the storm.
This morning's flight to Amsterdam was cancelled because an aircraft could not come in last night, but the airport says there will be no further disruption to flights.
Dublin Airport is fully operational this morning, but still expecting delays due to Storm Isha.
DAA has advised anyone due to fly out of Dublin on Monday to check the status of their flight with the individual airline.