Suvarnabhumi airport has seen a sharp rise in the number of international arrivals since the requirement for pre-flight Covid-19 tests was lifted.
The airport reported an average 11,623 travellers from overseas destinations from Friday to Monday, a 66% rise from the average in March of 7,003 visitors a day.
The airport manager said the rise was due to the government's decision to scrap pre-travel RT-PCR tests for visitors coming under Test & Go, Sandbox and quarantine schemes from last Friday, April 1.
He expected the numbers would continue to increase as the eased travel restrictions lead to more flights landing at Suvarnabhumi.
The airport serviced 141 inbound flights a day on average this month, compared with 137 landings last month.
The government's decision to end pre-travel tests is aimed at attracting more holidaymakers to Thailand to help the tourism sector recover.