Enables the transfer of folic acid (pteroylglutamic acid) from one side of a membrane to the other. Folic acid is widely distributed as a member of the vitamin B complex and is essential for the synthesis of purine and pyrimidines.
Reactome:R-HSA-200652 "SLC19A1 transports 5-methyl-THF from extracellular region to cytosol"; Reactome:R-HSA-200680 "SLC25A32 transports THF from cytosol to mitochondrial matrix"; Reactome:R-HSA-200720 "SLC25A32 transports THF from mitochondrial matrix to cytosol"; Reactome:R-HSA-200729 "SLC46A1 transports FOLA from extracellular region to cytosol"; reactome:R-HSA-200646 "Cytosolic folate export across the plasma membrane"