Under standard 2026 international aviation rules, you cannot take a standard-sized bottle of wine in your carry-on luggage. All liquids in carry-on bags are still restricted by the "100ml rule" (3.4 oz), and since a bottle of wine is typically 750ml, it will be confiscated at the security checkpoint. The only way to take wine in your carry-on is if you purchase it inside the airport duty-free shop after passing through security. In this case, the shop will seal it in a "Security Tamper-Evident Bag" (STEB), which allows you to bring it onto the plane. If you have a connecting flight, however, you must be careful, as some countries' security may not honor STEBs from other regions. For most travelers, the best way to transport wine is in checked luggage, where there is no volume limit (though you must stay within weight limits and ensure the alcohol content is below 70%). Using specialized "wine wings" or bubble-wrap sleeves is essential to prevent a messy breakage in your suitcase.