THIS is the moment a woman manages to crawl under an airport security barrier before sneaking onto a plane unnoticed.

The unnamed woman tried to sneak onto a flight at Nikola Tesla Airport in Belgrade, Serbia but was only caught out when she was already on the plane.

The incredible footage shows the woman doing a military-style crawl on her stomach out in the open on January 8 – and she makes sure to look both ways to check she is getting away with it.

She manages to make it through several checkpoints, as it seems that there is nobody nearby to spot her illegal actions.

An automated passport gate that she snuck under had been installed just three weeks earlier on December 20.

Somehow, the woman made it to the Wizz Air flight to Malta, even being able to get on board without a ticket or boarding pass.

It was only when she entered the aircraft and was unable to show flight attendants her boarding pass that she was caught out.

Security was swiftly alerted, and the mystery woman was removed from the plane.

Police have confirmed that the woman has been charged with trespassing.

It is reported that the woman arrived in Belgrade on a flight from France, after being deported for a reason currently unknown.

It is not currently reported what the woman’s reason was for sneaking onto the plane.

Moreover, it is unclear if she had the intent to cause anyone harm with her stunt.

An investigation has been launched by the relevant organisations, including the Civil Aviation Authority.

Airport representatives said: “Belgrade Airport is cooperating with the relevant authorities regarding this case, and while the investigation is ongoing, we are unable to provide any details.”

A WizzAir spokesperson said: “Wizz Air is aware of an incident involving a woman who attempted to board a flight at Belgrade Nikola Tesla airport without presenting to the airport security the required travel documents or a boarding pass.

“Wizz Air did not let the woman fly and alerted the relevant authorities.

“The safety and security of our passengers and staff are our highest priorities.

“We take this matter very seriously and have requested a thorough investigation by the airport, local authorities, and other relevant parties.

“As the investigation is ongoing, we are unable to provide further details at this time.

“We remain committed to ensuring that appropriate measures are taken at the airport to prevent such incidents in the future.”