Thinking about switching cell phone providers? American Airlines and AT&T are teaming up to offer a sweet deal: 15,000 AAdvantage miles just for signing up for AT&T wireless. That's a nice chunk of miles that could get you closer to your next award flight!

Here's the catch: You'll need to complete a redemption form within 14 days of activating your new line, and stick with AT&T for at least 60 days. There's also a $35 activation fee, so factor that into your decision. It takes 8-10 weeks to get your miles after the 60-day period.

But, it gets better! This deal should stack with shopping portals (sites that give you rewards for clicking through them before making a purchase), and it definitely stacks with Amex or Chase Offers you might have on your credit cards for AT&T. This is where the savings can really add up! Imagine getting $50-$75 back on top of those miles – not bad at all for something you might have been considering anyway.