Cheapest return flights from Louisville to San Juan in May from $196

AirHint found the following cheapest return flights from Louisville (SDF) to San Juan (SJU) in May 2026 (see full year).

Return flights

01 May - 02 May Southwest Airlines
01 May - 07 May Delta
02 May - 07 May Delta
01 May - 03 May Delta
02 May - 06 May Southwest Airlines
29 May - 05 Jun Allegiant Air
07 May - 10 May Southwest Airlines
27 May - 31 May Breeze Airways
04 May - 09 May Allegiant Air
23 May - 30 May Spirit Airlines

Also check the deals for one-way flights from Louisville to San Juan in May.

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