By default, Ryanair uses a random seat allocation system for any passenger who does not pay a fee to select a specific seat. If you choose the "Random Allocation" option during check-in, the system will assign you a seat anywhere on the plane, and in 2026, the algorithm is notoriously efficient at splitting up groups or families who have not paid to sit together. To avoid being seated in a middle seat or away from your companions, you must pay a seat selection fee, which typically starts at €8 to €15 for a standard seat and goes up for extra legroom or front-row options. It is important to note that if you pay for a seat, you can check in up to 60 days in advance, whereas those opting for the free random assignment can only check in between 24 and 2 hours before the flight's scheduled departure.