Cheapest return flights from Miami to San Juan in December from $136

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

Return flights

11 Dec - 15 Dec Frontier Airlines direct
02 Dec - 08 Dec Spirit Airlines direct
05 Dec - 08 Dec Spirit Airlines direct
29 Dec - 12 Jan Frontier Airlines direct
04 Dec - 08 Dec Spirit Airlines direct
07 Dec - 08 Dec Spirit Airlines direct
30 Dec - 12 Jan Frontier Airlines direct
01 Dec - 09 Dec Frontier Airlines
15 Dec - 19 Dec Frontier Airlines direct
09 Dec - 25 Dec Spirit Airlines
30 Dec - 11 Jan Frontier Airlines direct
28 Dec - 11 Jan Frontier Airlines direct
25 Dec - 30 Dec Frontier Airlines direct
21 Dec - 25 Dec Frontier Airlines direct
31 Dec - 11 Jan Spirit Airlines direct
31 Dec - 07 Jan Spirit Airlines direct
29 Dec - 07 Jan Frontier Airlines direct
30 Dec - 07 Jan Frontier Airlines direct
28 Dec - 01 Jan Frontier Airlines direct
30 Dec - 10 Jan Frontier Airlines direct

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

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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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