Here are the carry-on baggage allowances for Ireland's major airlines — including Ryanair's new size

Baggage allowance varies between airlines. Here's what you need to know
Ryanair has increased the size of its underseat bag by 5cm for travellers this summer.
From Thursday, September 4, the new dimensions will measure 40 x 30 x 20cm. Previously, this was 40 x 20 x 25cm.