Surprise airline fees

Since 2001 we've gotten used to certain fees being added to the cost of flying. Fees for increased security? Sure, we have to have some way to pay the TSA for keeping us safe. Paying for our meals? Okay, at least they're better quality than what we used to get.

But now some airlines are charging extra for the most basic service of all - checking a suitcase.

Depending on what airline you fly, you may find yourself paying $15 for your first checked bag, $25 for the second, and $100 or more - per bag - for anything over two.

If you're thinking you'll just travel with a carry-on, be warned - those same airlines are starting to crack down on the size of the carry-on bag, so those overloaded bags that take up more space than they should won't be allowed any more.

While some airlines are still checking bags for free, you'll want to do the math when you're comparing ticket prices to see which total package is actually better priced. And it may be time to re-think how many gifts you bring back from vacation - or budget for the extra cost of bringing them home.

Here's a look at some of the top airlines and the fees they're charging.