Cheapest return flights from Chicago (ORD) to San Juan (SJU), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
01 Sep 05 Sep Frontier Airlines
Direct Flight
01 Sep 04 Sep Frontier Airlines
Direct Flight
05 Sep 05 Sep Frontier Airlines
Direct Flight
02 Sep 06 Sep Frontier Airlines
Direct Flight
03 Sep 05 Sep Frontier Airlines
Direct Flight
05 Sep 11 Sep Frontier Airlines
04 Sep 06 Sep Frontier Airlines
Direct Flight
03 Sep 06 Sep Frontier Airlines
Direct Flight
05 Sep 08 Sep United
02 Sep 08 Sep United
30 Sep 05 Oct United
Direct Flight
25 Sep 02 Oct United
Direct Flight
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deals for one-way flights from Chicago to San Juan in September.

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Updated Jul 8, 2026.

About these fares

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