From LAX Terminal #1 Lower Level FlyAway Stop bus to L. A. Union Station station, train to Riverside-Downtown station, bus to Perris Transit Center, then line 22 bus to Hwy 74 NS Dexter. 5hrs 40min $26. From Los Angeles Airport, CA bus to Walnut-Calle De Las Estrellas, bus to Harbor-East Shuttle Area, line 83 bus to Santa Ana, line 6029 bus to Downtown Terminal Designated Stop, then line 22 bus to Hwy 74 NS Dexter. 6hrs 24min $47. From Los Angeles Airport (LAX) drive to Lake Elsinore. 1hrs 15min $9.