Cheapest return flights from Milwaukee to San Juan in December from $308

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

Return flights

01 Dec - 06 Dec American Airlines
31 Dec - 09 Jan Spirit Airlines
03 Dec - 10 Dec American Airlines
31 Dec - 07 Jan Spirit Airlines
31 Dec - 05 Jan Spirit Airlines
31 Dec - 19 Jan Spirit Airlines
29 Dec - 09 Jan Spirit Airlines
23 Dec - 09 Jan Spirit Airlines
24 Dec - 28 Dec Sun Country Airlines
29 Dec - 07 Jan Spirit Airlines
25 Dec - 09 Jan Spirit Airlines
23 Dec - 07 Jan Spirit Airlines
24 Dec - 09 Jan Spirit Airlines
25 Dec - 28 Dec Spirit Airlines
24 Dec - 29 Dec Sun Country Airlines
25 Dec - 30 Dec American Airlines
23 Dec - 30 Dec American Airlines
25 Dec - 29 Dec Sun Country Airlines
23 Dec - 26 Dec Spirit Airlines
23 Dec - 25 Dec Spirit Airlines

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

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