Earlier today Ryanair boss Michael O'Leary told Sky News: "We sincerely apologise and we are working very hard at the moment to make sure we finalise the list of flight cancellations which will effect less than two per cent of our customers and also look after those customers who have been disrupted".
The company anxious millions of customers by announcing on Friday that it expects to cancel 40 to 50 flights a day for the coming six weeks.
Ryanair Holdings Plc risks reviving its reputation for slack customer service with a move to scrap hundreds of flights through the end of October because of poor planning amid aggressive expansion.
A list of cancelled flights up until Wednesday can be found here.
The carrier's current annual leave year runs from April to March, but it is now transitioning to a January to December schedule from 2018.
Robin Kiely, head of communications at Ryanair, said: "We have operated a record schedule during the peak summer months of July and August but must now allocate annual leave to pilots and cabin crew in September and October".
And the airline lost 140 pilots to Norwegian Air so far in 2017, according to the Irish Independent.
One woman said her flight being cancelled had caused chaos for her as she had to hire a van to drive dozens of guests to a wedding in Italy.
Ryanair boss Michael O'Leary
If Ryanair has informed you of the cancellation with more than two weeks' notice, you will not be entitled to compensation.
It's not quite as bad as it sounds - the number of flights in actually less than 2% of the company's total daily flights - but that's not comforting if it's your flight.
Many customers are furious that the cancellations will also affect existing paid hotel and accommodation bookings.
However, the Irish carrier's decision to only publish a list of flights affected until this Wednesday(20 September) has come under intense criticism by passengers and consumer groups, who claim they needed a longer notice.
"How the hell do you know if you can get back". However, there will likely be an excess which you have to pay to make any claim so it is important to check your insurance policy to see what it covers.
What if my flight home has been cancelled and my replacement flight leaves later?
As in most cases, the best idea is to talk to your travel insurance provider.
If Ryanair books you onto a flight with another airline, you are still entitled to compensation.
Three flights a day to and from Scottish airports have been cancelled since Ryanair admitted it "messed up" the planning of pilot holidays.