Deputy government spokesperson Traisulee Traisoranakul said the move was in response to chronically crowded conditions at the airports as the number of tourists needing visas on arrival grows steadily.
Manpower will be boosted at both airports and Don Mueang will get more check-in counters, boosting the number to 16, she said.
Suvarnabhumi will have more Immigration staff checking passports and issuing visas.
Prime Minister Prayut Chan-o-cha also ordered that problem-solving guidelines be clearly explained to all airport staff so everyone’s in accord on procedure, Traisulee said.