easyJet is extremely strict regarding cabin bag sizes in 2026, as their business model relies heavily on baggage fees and cabin efficiency. Every passenger is allowed one small under-seat cabin bag (max. 45 x 36 x 20 cm) for free. This bag must fit completely under the seat in front of you. If you bring a second bag or a "large" cabin bag (max. 56 x 45 x 25 cm) without having pre-booked a "Large Cabin Bag" slot or an "Up Front/Extra Legroom" seat, you will be stopped at the gate. easyJet agents frequently use metal sizing frames to test bags; if your bag does not fit easily into the frame (including wheels and handles), you will be charged an "oversized bag fee" at the gate, which currently ranges from £37 to £48 ($45–$60), and the bag will be placed in the hold. There is no weight limit for these bags as long as you can lift them into the locker yourself, but the dimensions are non-negotiable. To avoid these high gate fees, travelers are strongly advised to measure their bags accurately and pre-book any additional allowance online, where prices start as low as £6.