Travel bubbles are likely to be delayed after several countries eyed for the scheme have seen a resurgence of Covid-19 cases, according to the Civil Aviation Authority of Thailand (CAAT).

CAAT director-general Chula Sukmanop said even though talks about travel bubble arrangements continue with a number of countries including China, Japan and South Korea, the scheme will be put on hold due to a resurgence in infections. He said Thailand will be closely monitoring the Covid-19 situation this month.

The government has come up with a plan to launch travel bubbles with several countries with low coronavirus risk, originally starting in August.

Mr Chula said that local tourism is vital to rebuilding the country's aviation industry and noted that demand for domestic travel is picking up after airlines resume operations and business operators launch promotional campaigns to boost travel.

Transport Minister Saksayam Chidchob said on Tuesday that public safety is the top priority for the government as it considers reopening the country to international travellers.

Mr Saksayam called on airlines to wait for a clear policy from the government and the CAAT when asked about reports about airlines preparing to resume international flights in September.

Earlier an epidemiologist at Chulalongkorn University urged the government to use extreme caution when considering travel bubble arrangements because the Covid-19 pandemic is still ravaging many parts of the world.