A record haul of more than 100 weapons was seized from passengers arriving at Robin Hood Airport near Doncaster in a clampdown, official figures show.
The seizures included throwing stars, CS gas canisters, machetes, stun guns, samurai swords, knives and imitation firearms, the UK Border Agency said.
They were all found during an operation lasting from May to October this year.
The haul was the biggest during any five-month period since the airport opened in 2005, the agency said.
They were all taken from people arriving from Bulgaria, the Czech Republic, Greece, Ibiza, Majorca and other Spanish destinations and Turkey.
The UK Border Agency said it had worked alongside South Yorkshire Police "to prevent these weapons ending up on our streets".
Ignorance of law
All the weapons would be destroyed, the agency said.
Andy Lumb, assistant director for the UK Border Agency in Yorkshire and the Humber, said: "These were no holiday trinkets or souvenirs.
"All of these weapons could have caused serious injury or even death.
"It is an offence to attempt to smuggle weapons of this nature into the UK and ignorance of the law is no excuse.
"The UK Border Agency is responsible for immigration and customs controls at the border and we treat any attempt to smuggle offensive weapons and firearms very seriously.
"Our officers play a crucial role in preventing items like these, as well as people who have no right to be here, from entering the UK."