Get prescreened. The federal Transportation Security Administration has launched a program called PreCheck for travelers willing to undergo a background check to avoid long waits. This service is currently available at eight airports and only for Delta and American Airlines passengers, but additional airlines and many other airports will be added this year.
Fly very frequently. If you’ve earned premium status on an airline’s frequent-flier plan—usually by logging about 25,000 miles a year—you may be able to avoid lines at airports where your airline has pull.
Grab an airline agent. If you’re about to miss a flight because of a slow line, find an airline agent. “The airlines, not the TSA, actually control the space right up to the checkpoint,” and they’d rather speed your path to the plane than rebook you.