President Donald J. Trump International Airport has completed another major step in its transition from Palm Beach International Airport, officially changing its three-letter airport code from PBI to DJT.

The new International Air Transport Association code took effect Aug. 18 and is now being used for airline reservations, ticketing, check-in, baggage tracking and flight information systems. Travelers booking flights to or from the West Palm Beach, Florida, airport should now search for DJT rather than PBI.

The code change follows the airport’s official renaming on July 9 under legislation signed by Florida Gov. Ron DeSantis on March 30. Formerly Palm Beach International Airport, the facility is now President Donald J. Trump International Airport.

Changing an established airport code is relatively uncommon. IATA location codes are generally treated as permanent because they are embedded across airline, airport and aviation technology systems. The transition from PBI to DJT required coordination among airlines, federal agencies and other airport partners.

Airport officials said the change does not affect flights, services, passenger operations, ownership or governance. The Palm Beach County Board of County Commissioners continues to oversee the airport.

Signage throughout the property has also been updated, including a new gold airport logo featuring an eagle and five stars. The airport website is transitioning to flydjt.org.

Palm Beach County’s Department of Airports has estimated the overall name change will cost approximately $5.5 million. The state is providing $2.75 million toward the project, while airport officials continue seeking additional funding sources.

The renaming has generated both support and opposition locally, including lawsuits and petitions challenging the change. It also makes the West Palm Beach facility the first commercial airport in the United States to be named for a sitting president.

The airport opened for commercial service in 1936 as Morrison Field, named for aviation advocate Grace Morrison. It became Palm Beach International Airport in 1948 and retained that name for nearly eight decades before this year’s change.