The Holiday Shows which were set to take place in January in Dublin, Belfast and Limerick have been rescheduled to March 2022.
Business Exhibitions is the organiser behind the country's biggest travel and tourism consumer fair.
It said it made the "difficult decision" to reschedule the Holiday World Show Dublin along with Holiday World Show Belfast and the Holiday Show in association with Shannon Airport to ensure the safety and comfort of all exhibitors, partners and attendees.
The Holiday World Show Dublin will now take place on March 4-6, while the Holiday World Show Belfast will go ahead on March 11-13.
The Holiday Show in association with Shannon Airport is rescheduled to February 26-17.
Maureen Ledwith, Sales Director of Holiday World Show, said that with the surge in daily cases again of Covid-19 in Ireland and throughout the world, the organisers have a duty of care to all its visitors, exhibitors and staff.
"We understand this will be a huge disappointment to many of our frequent attendees, exhibitors and partners alike, but on balance we consider rescheduling the events by a couple of months to be the best course of action at this time," she adde.
Pat Dawson, CEO of the ITAA, said that the annual Holiday World Shows are highlights of the travel and tourism calendar in Ireland.
"These last 22 months have been incredibly stressful for the Irish travel industry, with many businesses under immense pressure due to travel restrictions brought on by the Covid-19 pandemic. We are looking forward to participating in these events soon so that we can come together as an industry once again," he added.