In 2026, you generally cannot access your checked luggage during a standard layover. When you check your bags at the start of your journey, they are "checked through" to your final destination and are transferred between aircraft by ground crews behind the scenes. However, there are three main exceptions. First, if you have a long layover (usually over 12–24 hours) or an overnight stop, some airlines require you to collect your bags and re-check them the next day. Second, when entering the United States or Canada from an international location, you must almost always collect your bags at the first port of entry to clear Customs, even if you have a connecting domestic flight. Third, you can request a "short-check" at the initial check-in counter, but airlines often refuse this unless there is a legitimate medical or logistical need. If you need specific items during a layover, such as medication or a change of clothes, you must pack them in your carry-on bag.