Suvarnabhumi Airport expects to handle almost 50,000 passengers a day during the New Year festival.
General manager Kittipong Kittikachorn said that over the 12-day period from Dec 25 to Jan 5, some 591,090 passengers in total, or 49,258 passengers a day, are expected, up 72.2% over the same period last year.
The projected tally comprises 188,637 international passengers and 402,453 domestic travellers, he said.
Aircraft take-offs and landings are estimated at 5,961, or a daily average of 497, up by 11.8%.
The top three carriers offering the most special flights in the period are Bangkok Airways with 169 flights, THAI Smile Airways (50) and T-Way Airlines, the South Korean low-cost airline, (17).
The airport says its facilities are ready to cater to the surging number of departure passengers including more staff on duty and cleaning services to mitigate the spread of the Covid-19, Mr Kittipong said.
Mr Kittipong said Suvarnabhumi Airport is following the directive given on Tuesday suspending entry registrations of international arrivals under the Test & Go and Sandbox programmes, except for Phuket, until Jan 4, to curb the spread of the new Covid strain, Omicron.
However, those already registered in the Thailand Pass system under Test & Go and the Sandbox programme before the Tuesday suspension are still allowed to travel to Thailand under their original travel plans.
In the event that hotels are unable to pick up their arrival guests to enter the Thailand Pass system, Suvarnabhumi airport has arranged for taxis that have passed Covid-19 hygiene and safety standards, known as SHA Plus, to take international arrivals to their reserved hotels.
The SHA Plus transport desk is located on the second floor, Gate 10 of the airport's terminal.