Business at the State’s airports is returning to normal following disruption caused by the presence of volcanic ash particles in the country's airspace.
The Irish Aviation Authority said Dublin, Shannon and Cork airports are meeting full capacity demand from the airlines.
It said that as airlines rapidly return to full schedules, passengers, (including those still stranded abroad) should remain in contact with their air carrier for further information.
Dublin airport appeared to be operating normally.
While there were some short delays to a few arriving flights, and one or two cancellations, all other flights appeared to be on schedule for the day.
An Aer Lingus/United Airlines flight from Orlando, due at 7.50am, was cancelled, as was a flight due from Derry at 9am.
Arrivals throughout the morning included flights from Chicago, Philadelphia, Bristol, Manchester, Derry, Edinburgh, Birmingham, Newark, London, Glasgow, Edinburgh and New York.
A flight due from Copenhagen at 10.25am was delayed to 11.50am and there were short delays to a few other flights.
Of the 70 or so flight departures due between 10.45am and 4.30pm this afternoon, just one was listed as delayed this morning and one flight, an Aer Lingus flight to London Heathrow at 1.40pm, was cancelled.
Passengers were checking in as normal for departing flights, with no large queues in evidence.
Upstairs in the coffee area, Matthias Mennekes from Frankfurt was early for his afternoon flight to Rome.
The Irish Times met Mr Mennekes and a number of his colleagues in the airport last Friday, when the disruption due to the volcanic ash cloud scuppered their plans to fly home for the weekend to various destinations throughout Europe.
Mr Mennekes, who is working on an audit project in Waterford, didn't manage to make it home this week. But he was glad to report that the lifting of the flight restrictions meant he could travel to a wedding in Rome this weekend.
Dublin airport communications manager Siobhán Moore said there had been a “very smooth, seamless” start-up yesterday morning at the time of the busiest passenger traffic. “It went very well,” she said.
Ryanair said all flights are operating on schedule and it has opened three extra flights from Alicante to Dublin, Las Palmas to Stansted and Alicante to Birmingham tomorrow.
The airline said there were spare seats available on scheduled flights and extra flights today and tomorrow, and the backlog of disrupted passengers will have been cleared by close of business today.
Aer Lingus said today that all flights between Ireland and the UK, Europe and US are scheduled to operate.
An extra 500 extra seats have been deployed on routes to Malaga, Madrid, Lanzarote, Lisbon and Rome.
The Dublin Airport Authority said today almost 1.5 million passengers travelled through the airport in March, a 12 per cent decline over the same period last year.
It said passenger volumes to and from continental Europe fell by 11 per cent with more than 690,000 passengers travelling to European destinations.
UK traffic dropped by 11 per cent with just over 625,000 passengers travelling in March.
On domestic routes, traffic declined by almost 30 per cent, with just over 45,000 passengers last month. Volumes to and from North America were down by 10 per cent with just over 109,000 passengers in March.
The authority said other international passenger traffic to the Middle East grew by 4 per cent with over 21,000 passengers travelling last month. Some 3.9 million passengers have passed through the airport to date this year, a 14 per cent drop on last year.
The Government Taskorce on Emergency Planning met for the ninth time today to discuss the issue of the volcanic ash cloud.
It said the Environmental Protection Agency reported a small amount of ash in the atmosphere but there had been no deterioration in air quality.
The taskforce said its advice was that any ash likely to come to ground in the coming days would be "minimal" and it would have no impact on public health, drinking water or the environment generally.
Just 32 calls were received by the Department of Foreign Affairs crisis response centre yesterday, down from 150 calls on Wednesday, 808 on Tuesday and 1,100 calls on Monday.
The taskforce will monitor the situation over the weekend and will meet again on Monday.
It has published a list of frequently asked questions for members of the public at www.transport.ie
