The second-largest airport in the province is the Raja Haji Fisabilillah International Airport in Bintan. It mostly serves flight to Jakarta and destinations within the province such as Batam and Natuna. Other airports in the province are the Dabo Airport in Singkep, Raja Haji Abdullah Airport in Karimun, Letung Airport and Matak Airport in the Anambas Islands and Raden Sadjad Airport in the Natuna Islands. Raden Sadjad Airport is currently being developed as a military airbase due to territory dispute between Indonesia and China on the waters off the coast of the Natuna Islands. Additional facilities, such as aircraft hangars, ILS, refueling hangar are also currently being added.