Cheapest return MCI–SJU flights, May

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

Return flights

19 May - 23 May Frontier Airlines
09 May - 16 May Delta
20 May - 27 May Frontier Airlines
16 May - 24 May Delta
07 May - 10 May Delta
23 May - 26 May Frontier Airlines
28 May - 31 May Allegiant Air
13 May - 17 May Delta
10 May - 17 May Southwest Airlines
21 May - 25 May Frontier Airlines

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

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