Freetown International Airport (IATA: FNA, ICAO: GFLL) (officially), locally known as Lungi International Airport, is an international airport located in the coastal town of Lungi, Sierra Leone. It is the only international airport in Sierra Leone. The Sierra Leone River separates the airport from Freetown, the nation's capital city.

The airport is operated by the Sierra Leone Airports Authority. Prior to its use as a civilian airport, it was a British Royal Air Force base. In 2012 its management was contracted out to the British security and military company Westminster Aviation Security Services Ltd.

A new international airport was planned at Mamamah to replace Lungi International Airport. Mamamah International Airport was expected to be operational by 2022, however the project was cancelled in October 2018 following a change of government. The government Aviation Minister stated that they would refurbish Lungi instead and may build a bridge to better link the airport to Freetown. The Lungi Bridge project was announced by the president during 2019.

Following parliamentary approval in December 2020, a $270 million expansion project started. The project includes a new passenger terminal, VIP terminal, taxiways and widening of the runway. The annual capacity will be 1 million passengers and will be capable of handling 8 wide-body aircraft at any one time. The new terminal is located on the northern side of the runway, towards the eastern end. The new terminal was officially opened on the 4th March 2023. A management agreement has been signed with Summa Airport (SL) Ltd.