Ryanair has said it faces "mass cancellations" at Dublin Airport from next month, if the airport's operator is forced to cut daily flights to limit noise.
Earlier this week, Fingal County Council issued an enforcement notice to airport operator daa.
This would limit the number of flights that can both take off and land at their airport to 65 a day, between 11pm and 7am.
The conditions were agreed when planning permission was granted for the north runway, which opened last August.
But Fingal County Council said the airport's summer schedule is now in breach of the conditions.
Overnight flights currently operate from the south runway only, with the north runway already closed between 11pm and 7am.
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Speaking to RTÉ News, Ryanair's Group CEO said this order would lead to flight cancellations for the airline.
Michael O'Leary wants to see the restriction period cut to between the hours of midnight and 6am, and said this would allow for most early morning flights to take off without disruption.
He called the enforcement order "stupid" and "idiotic", saying a "tiny number of neighbours" cannot be allowed to restrict Irish air connectivity.
Ryanair also claims the night-time restrictions are no longer necessary when new planes run by it and Aer Lingus are 50% quieter, reducing noise emissions.
Mr O'Leary said both Ryanair and Aer Lingus have invested billions of euro buying new aircraft that are quieter.
He said around 25% of the Ryanair fleet is made up of these new planes. "Over the next two years it will be about 50% of the fleet," he said.
The airline added that imposing these restrictions would mean fewer flights would be operating than before Dublin Airport's second runway was built, something it described as bizarre.
"We have the bizarre situation where we will have now spent €300 million building a second runway, but now have less flights than when we only had one runway - only in Ireland would you get this sort of absurdity," he said.
Mr O'Leary called on Minister for Transport Eamon Ryan to instruct Fingal County Council to withdraw their enforcement notice. He added if the minister fails to intervene he should resign.
However, the Taoiseach has said that Fingal County Council has a duty to enforce the law, in relation to flight restrictions at Dublin Airport.
Speaking this afternoon, Leo Varadkar said that he believed that there are a "number of further steps" still to play out.
Mr Varadkar told reporters that he did not foresee disruption to people's flights, adding that the issue will have to "play out" with An Bord Pleanála and the courts.
Green Party councillor Ian Carey also defended the move by Fingal County Council and said the Government and planning authority must "stick to their guns" on the decision despite criticism of it.
Speaking on RTÉ's Today with Philip Boucher-Hayes, he said: "Everyone knew the airport has been operating in a way that didn't comply with planning. And it is only right that the airport has to get in line with the laws. It would apply to you or me so it should apply to them as well."
He said night time restrictions apply to almost every airport in Europe and this just brings Ireland in line with what is "common practice ".
Speaking on the same programme, former Senator and founder of Aer Lingus Regional Pádraig Ó Céidigh has said he agrees fundamentally with Ryanair's stance on the decision.
He said there are EU directives in relation to noise control at airports and at Dublin Airport there is a 2019 Regulation Act.
He said Fingal County Council are the authorised body to deal with this.
However, Mr Ó Céidigh said, that "on the face of it" and from the information so far, he said he thinks the order is "absolutely crazy".
Additional reporting by Tommy Meskill
