The screwup comes as a rumored ban looms for all electronics, except phones, on flights leaving Europe.
Delta mistakenly informed passengers Friday that most electronics were getting banned from international flights.
As spotted on FlyerTalk and by The Points Guy, a sign at the Cincinnati/Northern Kentucky International Airport told passengers that a ban on carrying on devices apart from phones would come into effect on May 12 (Friday), requiring passengers to check anything from laptops to Nintendo Switch consoles on flights entering the United States.
"Effective May 12 passengers will only be permitted to carry a cell phone onboard flights returning to the United States. All other personal electronic devices will be required to be checked," the sign read.
Delta quickly shot this down, telling CNET that the sign was posted in error and has since been removed. However, this gaffe comes as rumors of such a ban on flights leaving Europe loom.
Delta said that a ban does continue to be in effect on flights entering the US from some Middle East markets.