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TSA Precheck provides known travelers a way to zoom through the screening process -- without budging in line.
The lure of free perks while traveling often leaves consumers feeling their upgrades weren't worthwhile.
Airlines do still offer a few free things at 30,000 feet.
Size really matters when it comes to airplane seats. And for travelers who have a few —- or many —- extra pounds, the in-flight experience can be daunting.