Cheapest return flights from Chicago to San Juan in April from 265€

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

Return flights

10 Apr - 13 Apr Frontier Airlines
30 Apr - 11 May United
29 Apr - 03 May Southwest Airlines
30 Apr - 03 May Southwest Airlines
06 Apr - 12 Apr Southwest Airlines
03 Apr - 10 Apr Southwest Airlines
10 Apr - 14 Apr United direct
04 Apr - 11 Apr United
10 Apr - 13 Apr United direct
29 Apr - 03 May United direct
23 Apr - 26 Apr Delta
06 Apr - 12 Apr United direct
23 Apr - 26 Apr United direct

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

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