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

AirHint found the following cheapest return flights from Detroit (DTW) to San Juan (SJU) in January 2026 (see full year).

Return flights

24 Jan - 30 Jan Frontier Airlines
25 Jan - 30 Jan Frontier Airlines
26 Jan - 30 Jan Frontier Airlines
09 Jan - 14 Jan Frontier Airlines
09 Jan - 12 Jan Frontier Airlines
09 Jan - 15 Jan Frontier Airlines
22 Jan - 31 Jan Spirit Airlines
14 Jan - 31 Jan Spirit Airlines
29 Jan - 31 Jan Spirit Airlines
10 Jan - 31 Jan Spirit Airlines
22 Jan - 06 Feb Spirit Airlines
22 Jan - 09 Feb Spirit Airlines
25 Jan - 06 Feb Spirit Airlines
25 Jan - 09 Feb Spirit Airlines
29 Jan - 09 Feb Spirit Airlines
31 Jan - 06 Feb Spirit Airlines
31 Jan - 09 Feb Spirit Airlines
26 Jan - 06 Feb Spirit Airlines
26 Jan - 09 Feb Spirit Airlines
23 Jan - 06 Feb Spirit Airlines

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

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