For passengers who have not purchased "Priority & 2 Cabin Bags" or a specific seat assignment, the Ryanair check-in window is much smaller than for other airlines. As of early 2026, non-priority passengers can check in starting 24 hours before the scheduled departure time and up to 2 hours before the flight. When you check in during this free window, Ryanair's system will randomly allocate a seat to you. It is a common strategy of the airline to separate groups who have not paid for seating, often placing them in different rows. If you fail to check in online during this window and arrive at the airport, Ryanair will charge a significant "Airport Check-in Fee" (typically around £55/€55 per person). Therefore, it is vital to have the Ryanair app downloaded and your notifications turned on so you can check in the moment the 24-hour window opens. If you have purchased a seat, you have the advantage of checking in much earlier, often up to 60 days before your flight.