Cheapest one-way flights from Miami to San Juan in December from $78

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

One-Way flights

07 Dec Frontier Airlines direct
08 Dec Frontier Airlines direct
14 Dec Frontier Airlines direct
04 Dec Frontier Airlines direct
05 Dec Frontier Airlines direct
18 Dec Frontier Airlines direct
11 Dec Frontier Airlines direct
02 Dec Delta
31 Dec Delta
03 Dec Frontier Airlines

Also check the deals for return flights from Miami to San Juan in December.

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.

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