Cheapest return flights from Chicago to San Juan in March from $143

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

Return flights

02 Mar - 05 Mar Frontier Airlines
04 Mar - 12 Mar Frontier Airlines
04 Mar - 07 Mar Frontier Airlines
17 Mar - 24 Mar jetBlue
01 Mar - 06 Mar jetBlue
09 Mar - 17 Mar jetBlue
11 Mar - 17 Mar jetBlue
12 Mar - 17 Mar Frontier Airlines
05 Mar - 12 Mar jetBlue
18 Mar - 25 Mar jetBlue
17 Mar - 07 Apr Spirit Airlines direct
23 Mar - 08 Apr Spirit Airlines direct
23 Mar - 07 Apr Spirit Airlines direct
23 Mar - 09 Apr Spirit Airlines direct
24 Mar - 08 Apr Spirit Airlines direct
24 Mar - 07 Apr Spirit Airlines direct
24 Mar - 09 Apr Spirit Airlines direct
24 Mar - 14 Apr Spirit Airlines direct
18 Mar - 08 Apr Spirit Airlines direct
18 Mar - 07 Apr Spirit Airlines direct

Also check the deals for one-way flights from Chicago to San Juan in March.

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