Cheap Flights from ONT

San Juan (SJU)

2026-08-23–2026-08-29 • American • $458 — Save $133 (~18%) Book

2026-08-10–2026-08-17 • American • $458 — Save $133 (~18%) Book

2026-08-15–2026-08-21 • American • $458 — Save $133 (~18%) Book