Cheapest one-way flights from Ontario to San Juan in December from $177
AirHint found the following cheapest one-way flights from Ontario (ONT) to San Juan (SJU) in December 2024 (see full year).
One-Way flights
| 31 Dec | Frontier Airlines | ||
| 30 Dec | Frontier Airlines | ||
| 28 Dec | Southwest Airlines | ||
| 29 Dec | Frontier Airlines |
Also check the deals for return flights from Ontario to San Juan in December.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
