For Ryanair flights in 2026, the cost to add a 10kg checked bag typically ranges from €12.99 to €23.99 if purchased during the initial booking. If you wait until after the booking is finalized to add the bag via the app or website, the price increases to between €23.99 and €35.99. If you arrive at the airport and need to check the bag at the desk, you will likely pay a significantly higher "last-minute" fee, often around €40 to €50. Ryanair also offers a "Priority & 2 Cabin Bags" option, which allows you to bring your 10kg bag into the cabin rather than checking it, usually priced between €6 and €20. Because Ryanair’s pricing is "dynamic," fees are higher during peak travel periods like Christmas or summer holidays and on longer routes. To get the best rate in 2026, it is essential to include all baggage needs at the very first step of the digital booking process.