Most airlines have been charging for your checked luggage for several years now. The cost is usually $25-30 per bag. This is a huge extra, unnecessary fee. Reduce the amount of "stuff" you travel with, and pack only required items in your carry-on bag. Once you get to your destination, visit a grocery store and buy small or travel sizes of shampoo, conditioner, soap, toothpaste, etc. Don't forget to buy some laundry soap and fabric softener or dryer sheets so you can do your laundry.
When you pack your clothing into a small carry-on, only pack items of clothng that are simple and can be worn together.
Bonus Tip: Wear a layer or two of clothing for your flight instead of packing it in your bag. Just don't tell the airline that you heard this suggestion from me.
