Yes, you can add Priority & 2 Cabin Bags to your Ryanair booking at any time up until two hours before your flight via the Ryanair app or website. In 2026, this remains the "Gold Standard" for Ryanair passengers who want to avoid the "hard-fail" of gate-checking their bags. "Priority" allows you to board the plane via the Priority queue and, most importantly, permits you to bring one small personal item plus a 10kg wheelie bag into the cabin. A grounded reality check: the price of adding Priority increases as the flight fills up. While it might cost €12 at the time of booking, adding it on the day of travel could cost €30 or more. If the flight's overhead bin capacity is reached, Ryanair will "grey out" the Priority option, meaning you can only add a 10kg Check-in Bag, which must be dropped at the desk before security. For a supportive and cost-effective trip, it is highly recommended to add Priority as soon as you know you need it, as "buying at the airport" is always the most expensive and least supportive option for your wallet.