Cheapest one-way flights from Chicago to San Juan in March from $139

AirHint found the following cheapest one-way flights from Chicago (ORD) to San Juan (SJU) in March 2026 (see full year).

One-Way flights

03 Mar Spirit Airlines direct
02 Mar Frontier Airlines
02 Mar United direct
01 Mar Spirit Airlines direct
05 Mar American Airlines direct
20 Mar Avelo Airlines
14 Mar Southwest Airlines
19 Mar jetBlue
14 Mar American Airlines direct
19 Mar American Airlines direct

Also check the deals for return flights from Chicago to San Juan in March.

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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.

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