The term "1st checked bag" refers to the first piece of luggage that a passenger hands over to the airline at the check-in counter to be stored in the aircraft's cargo hold. This is distinct from "carry-on" or "personal" items that you keep with you in the cabin. In 2026, airline baggage policies are highly segmented; for most Basic Economy or "Light" fares, the 1st checked bag is not included in the ticket price and requires an additional fee, often ranging from $35 to $40 for domestic U.S. flights. For Standard Economy or premium fares, the first bag is frequently included for free. This bag is subject to specific weight limits—typically 50 lbs (23 kg) for economy—and size restrictions (usually a maximum of 62 linear inches). Understanding this term is crucial for budgeting, as "2nd checked bag" fees are almost always significantly higher than the first.