Brisbane Airport has opened a new international passport control area as part of a major redevelopment of its International Terminal, with the new facility beginning operations just before Queensland's September school holiday travel period.

The new passport control area is located on Level 4 of the International Terminal inside a newly developed light-filled atrium. The relocation brings passport control together with the airport's check-in and security screening facilities on the same level.

The new facility has 12 passport-control lanes and is designed to create a more streamlined journey for international passengers travelling through the airport.

The change is part of a wider transformation of Brisbane Airport's international facilities. Moving passport control to the upper level also creates additional space for the airport to significantly expand its duty-free retail area.

The timing of the opening is particularly important because Brisbane Airport is preparing for a major increase in passenger numbers during the upcoming school holidays.

More than 1.8 million passengers are expected to travel through Brisbane Airport between Friday, September 18 and Monday, October 12. International travel during the period is forecast to be 6.1 per cent higher than during the corresponding period last year.

Popular international destinations expected to attract Queensland travellers include Japan, China, Europe and North America, along with holiday destinations such as Bali, Fiji and Vanuatu.

The airport is also preparing for several exceptionally busy travel days. Monday, October 5, which falls on a public holiday and the NRL Grand Final long weekend, is forecast to be the second-busiest day in the airport's history, with approximately 84,100 passengers expected across the domestic and international terminals.

Passengers are being advised to allow additional time for their journey because roads around the terminals, parking facilities, check-in areas, baggage drop and security screening are expected to experience increased demand during the holiday period.

The airport continues to recommend that domestic passengers arrive around 90 minutes before their scheduled departure, while international travellers should allow approximately three hours.

Brisbane Airport currently has connections to 35 international destinations and 63 domestic destinations. The airport handled a record 25 million passengers during the past year.

The new passport-control facility is one part of a much larger transformation program. Brisbane Airport is investing approximately $5 billion in its wider precinct over the next five years as part of its Future BNE program.

The redevelopment is intended to improve passenger facilities and prepare the airport for continued growth, including the increased travel demand expected as Brisbane and Queensland prepare for the 2032 Olympic and Paralympic Games.

For travellers using Brisbane Airport during the upcoming school holidays, the new passport-control arrangement means international passengers will now complete check-in, security screening and passport control on the same level of the terminal.