In 2026, the term "First Bag" at an airport baggage claim refers to the moment the first piece of luggage from a specific flight arrives on the carousel conveyor belt. Most airlines and airports now track this as a Key Performance Indicator (KPI) to measure efficiency. Some major carriers, such as Delta and Alaska Airlines, even offer a "20-Minute Bag Guarantee"—if the "First Bag" does not hit the belt within 20 minutes of the aircraft door opening, you can claim bonus frequent flyer miles or travel vouchers as compensation. In a broader sense, "First Bag" can also refer to the airline's baggage fee structure. When you see "First Bag: $40" on your booking, it means the price you must pay to check a single suitcase. For most "Main Cabin" or "Basic Economy" tickets, this first bag is the standard unit of measurement for travel costs. Understanding the "First Bag" timing is crucial for business travelers who need to coordinate tight ground transportation pickups, as the delay between the "First Bag" and the "Last Bag" can sometimes be as long as 30 to 45 minutes on a fully loaded wide-body jet.