Australia's Border Force has stopped 336 "suspect" travelers since inception last year

Australia's newly-formed border force has been responsible for more than 300 passenger removals at the nation's international airports since beginning operations last year.

Australian Border Force (ABF), formally Australian Customs and Border Protection Service, revealed on Thursday that its counter-terrorism unit (CTU) officers had stopped 336 suspicious travelers from boarding international flights up until June this year.

The ABF's 2014-15 annual report showed that customs officers conducted more than 133,000 "real-time assess" on more than 9,200 patrols.

It said that officers stopped a "number of people of national security concern", which included a high number of "minors from traveling to conflict areas in Syria and Iraq."

Since the conflict involving Islamic State (IS) in the Middle East escalated, CTU officers have been able to carry firearms and select travelers for random screenings, following an Abbott government decision to crack down on those leaving to the conflict zones.

"Upon examination of persons of concern, the CTU teams have found evidence of significant movements or attempted movements of large sums of cash, and images and material of an extremist nature," the report said.

"Some cases have resulted in the imposition of infringement notices, while others are the subject of ongoing investigations."

It was also revealed that the government canceled the passports of 67 suspect travelers - up from 45 in the previous year - in 2014-15.

In the past three months, more than 20 passports have been cancelled by the Immigration Department. endit