Around 160 Irish troops, due to return home from a peacekeeping mission in Kosovo, are stranded in the Balkans.
The no-fly zone has grounded a chartered plane sent out to bring back the soldiers, who are mainly from the Eastern Brigade.
The troops will remain at the Irish unit at Camp Clarke - outside the capital Pristina - until restrictions are lifted.
Meanwhile, Irish Rail has advised customers that there will be a change in the schecule of the Rosslare-to-Dublin rail service over the coming days.
The 17.55 train will depart from Rosslare at 18.45 today, tomorrow and on Thursday to accommodate the high numbers of people travelling on ferry services due to the air travel restrictions.