Guide

No, 55 liters is a volume, not a size—carry-on eligibility depends on the bag’s specific height, width, and depth versus the airline’s size limits.

Yes, you can check in a carry-on bag, but whether you pay for the privilege depends on why it is being checked — gate checking for space is usually.

Yes, the TSA permits fishing rods in carry-on bags, but most 4-piece rod tubes exceed the standard 22-inch carry-on length limit.

Yes, all major U.S. airlines let you check a car seat for free when flying with a child.

Yes, you can gate check a car seat on most major airlines, and it is generally the preferred method over checking it with your luggage at the ticket.

Yes, you can check a box on Southwest Airlines as part of your two free checked bags, provided it stays within the standard 62 linear inch and 50.

Yes, you can carry ointment on a plane in your carry-on bag, but it must follow the TSA 3-1-1 rule for gels and creams.

Yes, most airlines permit cardboard boxes as checked luggage if they meet standard size (62 linear inches) and weight (50 lbs) limits.

Yes, the TSA permits nicotine pouches in both carry-on and checked luggage since they are dry products not subject to liquid or battery restrictions.

No, most airlines open online check-in exactly 24 hours before departure, not 8.