Gone are the days when all or most economy airline tickets would automatically include a free checked bag: Nowadays, you'll ...

There are maximum size limits for some flights to Mexico; Central America; the Caribbean; and Madrid, Spain — check with the airline for more details. Checked luggage fee: For domestic flights ...

Similar to checked bag size ... the dimensions of your carry-on bag and personal item, and in some scenarios, even the weight. The carry-on size limit for many airlines is 22 x 14 x 9 inches.