A strike by Air Traffic controllers in France has begun to hit services at Shannon Airport.
Ryanair has cancelled a flight to Malaga and management at the airport are describing the situation as fluid and changeable.
The strike by air traffic controllers in France centers on a dispute over changes to european traffic flows.
It's the fourth time in 12 months the workers have downed tools in the row and it's causing a major headache for airlines across the continent.
The 6 day strike is due to finish on Monday June 30th.
Already this morning passengers due to depart Shannon Airport have had their plans postponed.
Director of Operations at Shannon Niall Moloney says it's a difficult situation.
A live departures tracker is available on www.shannonairport.ie.
Elsewhere Aer Lingus is advising customers of lengthy delays – while Ryanair has cancelled more than 2 dozen flights to and from France – while UK airlines have also seen a significant cut to services today.
Passengers are being advised to check their airlines' websites and to travel to the airport unless told otherwise.
With many people across the country expected to be affected by the industrial action consumers are being reminded of their rights.
Grace Duffy of the European Consumer Centre has this advice for anyone affected by delays.
"First and foremost the airlines have to provide information to the passengers on their rights, and then they also have to provide a certain minimum standard of care and assistance" she said.
"So basically they should provide affected passengers with things like refreshment vouchers, meals, that sort of thing".
"And if it came to situation where an overnight stay was necessary then the airline would also have to organise accommodation fore them" she added.
