As of 2026, the Ryanair App is effectively mandatory for a seamless travel experience. While you can technically "check in" on the website, Ryanair has transitioned to 100% Digital Boarding Passes that must be displayed via the app on your smartphone. Printed paper boarding passes are no longer accepted at most airports. If you arrive at the airport without having checked in online via the app, you will be charged a steep airport check-in fee (typically €55). For 2026 travelers, the app also handles mandatory "Visa Documentation Verification" for non-EU passengers. If your phone dies or you lose it after you have already checked in, Ryanair staff can assist you at the gate for free since your details are in the system, but the "digital-first" requirement is now the standard for avoiding extra costs on this budget carrier.