Travelers flying out of DFW International Airport will no longer have to make the trek to the airport to find out how long they'll be waiting in a security line.

The DFW Airport app will now show travelers estimated wait times at the airport's 16 security checkpoints.

The app, which is free in both the Apple App Store and the Google Play Store, uses data collected by sensors placed at each security point that track heat and movement. It feeds the information into the app in real time so travelers can get up-to-the-minute estimates on how long they might have to wait to get through security.

Prefer to use TSA PreCheck or Priority lanes over general boarding? The app has estimated waits for those as well. The airport is among the first in the country to display wait times at multiple layers of TSA security checkpoints.

DFW Airport's app features. (Courtesy of DFW Airport)

"TSA Wait Times were well-received when we introduce them in the terminals, and the app helps us get that same information to more customers before they ever arrive at DFW," the airport's executive vice president of revenue management and customer experience Ken Buchanan said in a statement.

In December, the airport introduced digital displays in its terminals showing wait times for checkpoints so travelers could compare. It also plans to roll out TSA checkpoint wait times on its website later this summer.

Travelers can also use the airport app to prepay parking at discounted rates, view flight information, order food from airport vendors as well as find their way around the airport.