Cheapest return flights from Miami to San Juan in September from $139

AirHint found the following cheapest return flights from Miami (MIA) to San Juan (SJU) in September 2026 (see full year).

Return flights

02 Sep - 03 Sep Spirit Airlines direct
01 Sep - 06 Sep Frontier Airlines direct
24 Sep - 29 Sep American Airlines direct
02 Sep - 06 Sep Spirit Airlines direct
04 Sep - 07 Sep Frontier Airlines direct
02 Sep - 07 Sep Spirit Airlines direct
01 Sep - 07 Sep Spirit Airlines direct
08 Sep - 14 Sep Frontier Airlines
04 Sep - 06 Sep Spirit Airlines direct

Also check the deals for one-way flights from Miami to San Juan in September.

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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.

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