Most airlines will allow passengers to check two luggage pieces for domestic flights. We recommend that you check with your airline first, but most domestic flights permit a checked luggage piece that does not exceed 27" x 21" x 14" or 62" linear inches (Length + Width + Height) overall. Most airlines also have a maximum weight limit of 50 pounds per checked bag. Airline carriers will allow overweight, oversize or additional baggage for additional fees. Make sure you know the exact details of your airline's checked baggage restrictions and avoid unnecessary fees.