Baggage rules are set by each airline and depend on your fare, route and sometimes your status. Check your fare's allowance before you pay, and confirm again before you pack.
Personal item, carry-on and checked bag
Most airlines allow one personal item that fits under the seat. A larger carry-on is usually allowed in standard fares but may be restricted or charged on the lowest fares. Checked bags are charged by the bag on most domestic routes and are often included on long international fares.
Size and weight limits
Dimensions and weight limits differ between carriers and sometimes between aircraft types. Regional jets often have smaller overhead bins, so a bag may be gate-checked even if it fits on a larger jet.
Prohibited items
The TSA publishes the list of items that are not allowed in carry-on or checked luggage. Lithium batteries must stay in the cabin, and liquids in carry-on bags must follow the TSA's size rules.
Tips to avoid fees
- Weigh your bag at home.
- Compare fares with and without bags included.
- Pay for bags online ahead of time, since airport prices are often higher.
- Check the rules for each airline on mixed-airline tickets.
Delayed or damaged bags
Report a problem at the baggage service office before you leave the airport, and keep your claim tag and receipts. U.S. rules require airlines to refund checked-bag fees when a bag is significantly delayed.
Frequently asked questions
Are checked bags free on international flights?
Many international fares include one or two bags, but not all. Check the fare details for your route.
Can I bring a power bank on a plane?
Yes, in carry-on baggage only. Lithium power banks must not be placed in checked luggage.
Keep reading
Last reviewed October 22, 2026. FlighTicketHub provides general information; confirm details with the airline before you travel.