Cheapest return flights from Miami to San Juan in September from 110€
AirHint found the following cheapest return flights from Miami (MIA) to San Juan (SJU)
in September 2025 (see full year ).
Return flights
21 Sep
- 28 Sep
Frontier Airlines
110 €
direct
25 Sep
- 28 Sep
Frontier Airlines
110 €
direct
26 Sep
- 28 Sep
Frontier Airlines
110 €
direct
22 Sep
- 25 Sep
Frontier Airlines
130 €
direct
15 Sep
- 19 Sep
Frontier Airlines
132 €
direct
21 Sep
- 26 Sep
Frontier Airlines
132 €
direct
22 Sep
- 26 Sep
Frontier Airlines
132 €
direct
21 Sep
- 25 Sep
Frontier Airlines
138 €
direct
18 Sep
- 21 Sep
Frontier Airlines
138 €
direct
18 Sep
- 22 Sep
Frontier Airlines
144 €
direct
29 Sep
- 02 Oct
Frontier Airlines
148 €
direct
30 Sep
- 03 Oct
Delta
219 €
27 Sep
- 03 Oct
Spirit Airlines
268 €
Also check the deals for one-way flights from Miami to San Juan in September .
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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