Irish airspace is set to open at 1 p.m. local time after disruption from the volcanic ash cloud.
A dense cloud of ash moved down from Donegal over the country on Monday, but that cloud has cleared, and The Irish Aviation Authority (IAA) made its decision to reopen Irish airspace.
"The situation will be reviewed as the week goes on. Winds are forecast to continue coming from a Northerly direction for the next few days and this could lead to further problems," read a statement from the IAA.
There is a possibility that the ash cloud may reappear on Wednesday and Thursday, but whether the plume exceeds the threshold that may impact on the safety of aircraft and cause further disruption remains to be seen.
The areas affected by the latest volcanic as cloud were Ireland and the west of Scotland.
Normal service has been resumed until at least midnight Irish time, and all passengers are advised to monitor updates from airlines for further updates.