The other agency that previously formed part of the old department is the Civil Aviation Authority of Thailand.

[4] Only 17 DOA airports turned a profit between 2009 and 2016 while the total number of passengers jumped 25 percent.

[5] Udon Thani is also in the black, with profits reaching 100 million baht a year.

[6] In a change of plans in August 2019, AOT proposed instead to take control of the Udon Thani, Tak, Buriram, and Krabi airports, leaving Sakon Nakhon and Chumphon airports to the DOA.

The 20 billion baht airport, to occupy 3,500 rai straddling the Bang Len and Nakhon Chai Si districts, 50 kilometres west of Bangkok.