The remaining planes will be delivered gradually over the next two years.
Slovak President Peter Pellegrini welcomed the F-16 arrival at the Kuchyna Air Base in the country's west, highlighting that the F-16s "make a significant contribution to enhancing our nation's defense capabilities."
Pellegrini was the Prime Minister in 2018 when the government signed a $1.8 billion deal to purchase 14 American F-16 Block 70/72 fighters, intended to replace the aging Soviet-era MiG-29 jets.
Slovakia stopped utilizing its MiG-29s in the summer of 2022 due to a lack of spare parts and expertise to carry out their maintainance after Russian technicians returned home.
The Slovak government approved a plan to send 13 MiG-29s to Ukraine last year, becoming the second NATO member to respond to Ukraine's request for military aircraft to defend against Russia's invasion.
NATO member countries Poland, Czechia, and Hungary have taken on the responsibility of patrolling Slovakia's airspace in the absence of its own aircraft.