Cheap Flights from ONT

San Juan (SJU)

2026-08-24–2026-09-01 • American • $404 — Save $200 (~27%) Book

2026-08-29–2026-09-04 • American • $404 — Save $200 (~27%) Book

2026-08-17–2026-08-24 • American • $404 — Save $200 (~27%) Book