Cheapest return flights from Chicago to San Juan in March from $287

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

Return flights

30 Mar - 06 Apr Frontier Airlines
12 Mar - 18 Mar Frontier Airlines
06 Mar - 10 Mar Frontier Airlines
04 Mar - 25 Apr Delta
31 Mar - 23 Apr Frontier Airlines
02 Mar - 10 Mar Frontier Airlines
13 Mar - 18 Mar Frontier Airlines
17 Mar - 19 Mar Frontier Airlines
08 Mar - 11 Mar Frontier Airlines
31 Mar - 07 Apr Frontier Airlines
31 Mar - 06 Apr Frontier Airlines
07 Mar - 13 Mar Frontier Airlines
06 Mar - 14 Mar Frontier Airlines
09 Mar - 17 Mar Frontier Airlines
15 Mar - 17 Mar Frontier Airlines
28 Mar - 07 Apr Frontier Airlines
18 Mar - 01 Apr Frontier Airlines
31 Mar - 03 Apr Frontier Airlines
25 Mar - 02 Apr Frontier Airlines
31 Mar - 04 Apr Frontier Airlines

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

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