AirHint found the following cheapest one-way flights from Chicago (ORD) to San Juan (SJU) in March 2026 (see full year).
One-Way flights
| 04 Mar | United | direct | |
| 01 Mar | United | direct | |
| 31 Mar | Frontier Airlines | ||
| 05 Mar | Frontier Airlines | ||
| 02 Mar | Spirit Airlines | direct | |
| 31 Mar | United | direct | |
| 26 Mar | United | direct | |
| 21 Mar | Frontier Airlines |
Also check the deals for return flights from Chicago to San Juan in March.
Powered by
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.
Find us on social media