The Transportation Security Administration (TSA) intercepted a record 2,653 guns in carry-on luggage during 2015.
The agency says more than 82% of those weapons were loaded at the time of discovery.
The guns were found at security checkpoints in 236 airports around the country.
The five airports with the most confiscated carry-on guns are:
1. Dallas/Fort Worth International Airport: 153
2. Hartsfield-Jackson Atlanta International Airport: 144
3. Houston George Bush Intercontinental Airport: 100
4. Denver International Airport: 90
5. Phoenix Sky Harbor International Airport: 73
In 2014 a record was set with 2,212 discovered firearms. In 2005, only 660 guns were found in carry-on luggage.
“The transport of firearms by commercial air in carry-on bags represents a threat to the safety and security of air travelers,” TSA said in a statement.
“Through increased training in detection methods, our officers are becoming more adept at intercepting these prohibited items,” the agency added.
In 2015, TSA screened over 708 million passengers or more than 1.9 million a day. It also screened roughly 432 million checked bags and 1.6 billion carry-ons.
If you forget to move your carry-on weapon to your checked luggage, and fail to place it inside a lockbox, and alert airline officials, you can face criminal charges and penalties.
Firearms, firearm parts and ammunition are strictly prohibited in all carry-on bags.