AirHint found the following cheapest return flights from Chicago (MDW) to San Luis Potosi (SLP) in May 2026 (see full year).
Return flights
| 31 May - 05 Jun | Volaris | ||
| 30 May - 02 Jun | Delta | ||
| 21 May - 25 May | Delta | ||
| 22 May - 26 May | Delta | ||
| 24 May - 31 May | Frontier Airlines |
Also check the deals for one-way flights from Chicago to San Luis Potosi in May.
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