Cheapest return flights from Chicago to San Juan in May from $384
AirHint found the following cheapest return flights from Chicago (MDW) to San Juan (SJU) in May 2025 (see full year).
Return flights
| 07 May - 13 May | Delta | ||
| 03 May - 07 May | Frontier Airlines | ||
| 17 May - 21 May | Frontier Airlines | ||
| 16 May - 21 May | Frontier Airlines | ||
| 31 May - 05 Jun | Southwest Airlines | ||
| 22 May - 26 May | Southwest Airlines |
Also check the deals for one-way flights from Chicago to San Juan in May.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
