From FVG Airport bus to Trieste then bus to Rijeka. 3 h 15 min 112 kn. From FVG Airport bus to Valentinis Gaslini, walk to Monfalcone, train to Trieste, then bus to Rijeka. 3 h 21 min 117 kn. From Trieste Airport (TRS) drive to Rijeka. 1 h 30 min 124 kn.