Ryanair have issued a warning to customers who are planning to fly in November.
Those who fly with the budget airline need to check-in online or face a hefty fine. If they don't check-in online within 24 hours before their flight, they will be charged £55 for checking in at the airport - unless the airport does not provide online check-ins.
However, Ryanair have warned customers that the website and app will be down for 11 hours next month - meaning passengers won't be able to check in during this time.