Cheapest return flights from Detroit to San Juan in December from 120€

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

Return flights

05 Dec - 08 Dec Frontier Airlines
07 Dec - 14 Dec Frontier Airlines
12 Dec - 14 Dec Frontier Airlines
04 Dec - 09 Dec Spirit Airlines
03 Dec - 06 Dec Spirit Airlines
04 Dec - 06 Dec Spirit Airlines
01 Dec - 06 Dec Spirit Airlines
13 Dec - 14 Dec Spirit Airlines
06 Dec - 14 Dec Spirit Airlines
03 Dec - 14 Dec Spirit Airlines
31 Dec - 12 Jan Spirit Airlines
31 Dec - 14 Jan Spirit Airlines
31 Dec - 09 Jan Spirit Airlines
31 Dec - 11 Jan Spirit Airlines
31 Dec - 13 Jan Spirit Airlines
31 Dec - 10 Jan Spirit Airlines
31 Dec - 08 Jan Spirit Airlines
13 Dec - 10 Jan Spirit Airlines
31 Dec - 17 Jan Spirit Airlines
31 Dec - 16 Jan Spirit Airlines

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

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