Ryanair is legendary for its strict adherence to baggage policies, and in 2026, this remains a cornerstone of its low-cost model. Every passenger is entitled to one small personal item (max 40 x 30 x 20cm) that must fit under the seat. Gate agents frequently use metal sizers to check dimensions, and if your bag does not fit or if you bring an unpurchased second bag to the gate, you will be charged a "Gate Bag Fee" that can exceed £/€60. "Priority & 2 Cabin Bags" is the most popular add-on, allowing a 10kg overhead bag (55 x 40 x 20cm). It is vital to measure your bags including wheels and handles, as even a slight protrusion can trigger a fine. For checked luggage, the 10kg or 20kg weight limits are strictly enforced, with excess weight fees charged per kilogram at the airport desk.