Danish police arrested two men at Copenhagen's Kastrup Airport on Wednesday after they were overheard discussing a bomb in one of their bags, prompting the evacuation of the terminal, police said.
Terminal 3 was evacuated at around 12:00 pm (1100 GMT) after police were notified of the conversation. The terminal was reopened several hours later.
"They said that they were only joking with each other," police spokesman Steen Hansen told AFP.
"Apparently, they are friends, though one was going to Paris and the other was flying to Frankfurt (Germany)," he said.
The identity and nationality of the men was not disclosed.
The incident came just hours after Danish police raised the country's threat level by one notch to the second-highest level, citing the elevated risk of a terrorist attack after last week's Paris attacks.