Ryanair customers could be waiting for as long as three months for refunds, according to their Chief Marketing Officer.
Kenny Jacobs has said that there is a huge backlog on refunds due to millions of customer's cancellations but refunds will still be given.
Ryanair also hope to have a lot more of their fleet in the air by July and when international travel resumes customers will see "sales like never before".
Mr Jacobs told Independent.ie: "It should be seven days but I think it’s going to be about three months. We’re still dealing with refunds from the first set of cancellations in the middle of February, and look, [this] week we’re going to be cancelling another big number of flights.
"The heap just keeps on getting bigger and bigger."
The vouchers on offer are currently valid for 12 months although this could be changed if restrictions last longer than expected.
Bosses hope to have 40 percent of their fleet in the air by July and that figure to be "even stronger" by September.
Mr Jacobs added: "What I think will happen, and what we’re getting ready for, is that in July, August and September there will be flights, there will be travel, there will be demand that doesn’t exist today."
And a sale "like never before" is likely with flights from as little as €4.99 and €9.99 between big airports.
Irish travel expert Eoghan Corry last week urged customers to look for a receipt if they want one but that it is difficult to get it.
He said: "Ryanair are moving into territory where the refund, in theory, is still there but it's so difficult to get.
"But this is important: Every other airline is doing the exact same thing."
Corry, editor of the site Travel Extra which is "no more" due to the pandemic, also told how laws in seven European countries have changed and that vouchers now replace refunds.
He thinks airlines are expecting the EU to change the laws in their favour - and that Ryanair "have got wind" that changes could be on the way.
