Ryanair has stated that they will only be able to meet on the 20th, the same day as the planned strike and have remained firm, saying that they cannot meet before the 20th.
The comments came despite Ryanair chief executive Michael O'Leary's pledge that the company would enter talks with pilots on union recognition.
However, the airline had said that management would not be able to meet with IMPACT representatives until Wednesday.
One day of industrial action had been planned for Wednesday December 20 and would have mostly involved captains.
The European Transport Workers' Federation (ETF) and International Transport Workers' Federation (ITF), which represent pilots and cabin crew in all of Europe's major airlines, also wrote to Mr O'Leary to say they are open to talks on union recognition.
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Mr O'Leary spoke to the airline's chief captains across its nearly 90 bases.
Statements from Ryanair and IMPACT this morning indicate that the strike by some pilots at the airline next week will go ahead, as Ryanair have said the position it set out yesterday had not changed, while IMPACT have said action will go ahead unless management arrange to meet beforehand.
"Once we have that we're ready to lift the industrial action but we need to do that first". "Given the seriousness of the situation I think it would be good if they could move their diaries around and find availability". Many industry observers said the cancellations resulted from a basic lack of pilots.
"We hope and expect that these structures can and will be agreed with our pilots early in the New Year".
A spokesman said it had not yet received any correspondence from Ryanair with the offer.
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Ms Blackshaw said unions wanted to tackle issues such as direct employment and discuss pay, rosters and other conditions.
The low-priced airline's refusal to recognise unions was at the heart of the model that transformed the small Irish regional airline into Europe's largest carrier by passenger numbers.
"Obviously, when we do we will be giving it full consideration", he said.
"The sensible course of action is for IALPA to meet with Ryanair next Wednesday, but call off the unnecessary threats of disruption to the Christmas flights of thousands of customers".
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