Whether duty-free bags count as part of your "hand luggage" allowance depends entirely on the airline's policy and the region where you are flying. On most major "full-service" carriers like British Airways, Lufthansa, or Delta, duty-free bags are typically allowed in addition to your standard carry-on and personal item. However, low-cost carriers (LCCs) like Ryanair, EasyJet, and Spirit are much stricter; their policy often states that "all items must fit inside your one allowed bag." If you board a Ryanair flight with a carry-on and a separate large bag of duty-free alcohol, they may charge you an "excess baggage" fee at the gate. In 2026, many European airports have lobbied for "Shopping Rights" that force airlines to allow one duty-free bag for free, but this is not a universal law. A common traveler "hack" is to leave space in your carry-on to tuck your duty-free purchases inside before boarding. Always check the "Cabin Bag" section of your specific airline’s app before shopping to avoid a surprise fee that might cost more than the "savings" you found at the duty-free shop.