Hong Kong International Airport resumed normal operations early Wednesday morning.
Airport officials are busy rescheduling the timetable of backlogged flight arrivals and departures.
Most of the protesters who clogged the airport on Tuesday have left, and only a few remain, although it's possible they might come back later in the day.
On Tuesday, small confrontations and scuffles between the protesters and police occurred, with police deploying tear gas to disperse the crowds.
Local police say they detained five demonstrators at the airport on charges of battering police officers and carrying weapons.
Leaders around the world are growing increasingly concerned about the unrest in Hong Kong.
On Tuesday, U.S. President Donald Trump took to Twitter, saying U.S. intelligence agencies had informed him "that the Chinese government is moving troops to the border with Hong Kong."
He went on to say that "everyone should be calm and safe," in a clear reference to concerns that Beijing may attempt to intervene.
The UN also denounced Tuesday's violence and called on the Hong Kong government to talk to its people.
The UN High Commissioner for Human Rights, Michelle Bachelet, called for a "prompt, independent, impartial investigation" into alleged excessive force by police.
The EU expressed a similar stance.
The spokesperson for the European External Action Service, which is the EU's diplomatic arm, urged all sides to refrain from violence and calm down.
The spokesperson highlighted the need for all sides to come together for "talks."
Choi Si-young, Arirang News.