If your travel is mostly domestic, TSA PreCheck may be the best solution for you.
TSA Pre✓™ is an expedited screening initiative that is expanding to airports across the country. Implementing a key component of the agency’s intelligence-driven, risk-based approach to security, TSA Pre✓™ enhances aviation security by placing more focus on pre-screening individuals who volunteer to participate to expedite the travel experience.
It's $85.00. You can sign up on-line.