A Thai Airways domestic flight landed at Suvarnabhumi international airport hours after anti-government protesters called off a crippling siege.
It was the first passenger flight that has landed in Bangkok in a week.
Officials said that the first international departures were expected to take off later in the day, with normal services back online by Friday.
Thousands of protesters began leaving Suvarnabhumi and the smaller Don Muang domestic airport earlier, a day after Thailand’s constitutional court banned Somchai Wongsawat, the country’s prime minister, and disbanded his People Power Party (PPP) after finding it guilty of election fraud.
Mr Somchai and another 59 members of the ruling coalition leaders were banned from politics for five years.
Yet, on Wednesday PPP members said they planned to regroup under a new name, the “For Thais Party”. They want to meet as early as Monday in order to select a new prime minister, which could possibly set the stage for further confrontation.
After Tuesday’s verdict activists from the People’s Alliance for Democracy (PAD), which has led the protests against Mr Somchai’s government, were seen joining efforts to clean up the airport terminal and return it to business as usual.
“It’s sad to say goodbye, but our job here is done, so we must go home”, said Saisuri Pantupradij, a 45-year-old PAD supporter that had been camped out at the airport.
“We want to clean up the airport before we leave. We want PAD to have a good image”, said Bow Piyapat, another protesters, as she wielded a mop around rows of check-in counters.
Last week, as the PAD occupied Suvarnabhumi and Don Muang, 350 000 passengers were left stranding and losses for the Thai economy have been estimated in hundreds of millions of dollars.
Thousands of jubilant anti-government demonstrators danced and sang in the main hall of the airport, on Tuesday, declaring victory after the court also ordered the dissolution of the three parties making up the ruling coalition.
A submit of the Association of Southeast Asian Nations due to be held in Thailand has been postponed, though the airport siege appears to be easing.
The meeting of the regional grouping, scheduled for December 15-18, had already been moved out of Bangkok because of the political turmoil that has engulfed the capital for several weeks.
“The Cabinet agreed to cancel the Asean meeting until March because of the political turbulence in Thailand”, Nattawut Sai-Kua, a government spokesman, told AFP news agency.
Thailand is the current chair of Asean so it was due to host the group’s annual summit.
The dismissal of Mr Somchai has “at least put a stop to the slide into chaos”, said Surin Pitsuwan, the Asean secretary-general and a former Thai foreign minister, commenting on Tuesday’s court ruling.
However he warned that the situation in the country remained “quite fragile [and] it will take some time to find a balance”.
‘Set an example’
Mr Somchai’s People Power party (PPP), the Chart Thai party and the Machima Thipatai party have been dissolved “to set a political standard and an example”, said Chat Chalavorn, the head of the constitutional court’s nine-judge panel.
Similarly dissolved by a military-appointed constitutional tribunal in May last year, the Thai Rak Thai party regrouped as the PPP soon after.
The verdict by the constitutional court is a victory for the people, Parnthep Pourpangan, a spokesman for the PAD told Al Jazeera.
“We have been trying to protect the constitution, and the PPP have been trying to amend it to put forward their interests”, he said.
But Sunai Phasuk of Human Rights Watch, told Al Jazeera that the PAD had “successfully manipulated Thailand’s democratic process”.
“The main reason they have managed to get away with it is by brainwashing people”, he said.
“They tell everyone they are acting in the name of protecting the constitution, and upholding democracy … but all they have done is put the independence of the judiciary into question.”
Accusing Mr Somchai of being a proxy for Thaksin Shinawatra, the prime minister ousted in a 2006 coup and the original target of the anti-government campaign, the yellow-shirted PAD supporters have been trying for months to force him out.
The PAD supporters also warned that if political change does not occur they would return to the streets.
“The PAD will return if another [Thaksin] proxy government is formed or anyone tries to amend the constitution or the law to whitewash some politicians or to subdue the monarch’s royal authority”, warned Sondhi Limthongkul, one of the protest leaders, on Tuesday night.