Cheapest return flights from Miami to San Juan in September from $249

Best time to book flights for Miami (MIA) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest return flights from Miami (MIA) to San Juan (SJU) in September 2025 (see full year).

Return flights

25 Sep - 28 Sep Spirit Airlines direct
09 Sep - 23 Sep Delta
16 Sep - 23 Sep Delta
11 Sep - 14 Sep Spirit Airlines direct
11 Sep - 15 Sep Spirit Airlines
02 Sep - 07 Sep Spirit Airlines
02 Sep - 07 Sep American Airlines direct
12 Sep - 15 Sep Spirit Airlines
05 Sep - 12 Sep Southwest Airlines
17 Sep - 05 Oct Southwest Airlines
11 Sep - 15 Sep American Airlines direct

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

Skyscanner

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan