KUALA LUMPUR, MALAYSIA - AirAsia and Malaysia Airlines have cancelled all flights to and from Bangkok on Wednesday.

This comes after anti-government protesters in Bangkok swarmed the airport complex Tuesday forcing the closure of the city's main international airport.

An air traffic control official at the Suvarnabhumi Airport on Wednesday told the media that the airport would remain shut Wednesday.

MAS operations director, Datuk Tajuden Abu Bakar, said that all four flights scheduled between KLIA and Bangkok have been cancelled as the airport has been closed by Thai authorities.

'As this closure is indefinite at this point of time, we are unable to advise when our flight operations will resume.'

Tajuden urged customers in Malaysia to call 1-300-88-3000 for further updates and passengers in Bangkok to call +662-2630572 or +662-1343184.

AirAsia on its website said all customers who were affected would automatically receive a refund through credit - to redeem a seat on the next available flight to/from Bangkok within three days from your original date of travel (subject to the reopening of the Bangkok airport and the availability of seats).

It added that arrangements for the next flight to or from Bangkok would have to be done at the AirAsia Sales Counter at the respective airport of departure after the Bangkok airport has reopened.