Cheapest return flights from Detroit to San Juan in January from $116
AirHint found the following cheapest return flights from Detroit (DTW) to San Juan (SJU)
in January 2026 (see full year ).
Return flights
24 Jan
- 29 Jan
Frontier Airlines
$ 116
12 Jan
- 15 Jan
Frontier Airlines
$ 116
19 Jan
- 28 Jan
Frontier Airlines
$ 116
08 Jan
- 12 Jan
Frontier Airlines
$ 143
27 Jan
- 10 Feb
Frontier Airlines
$ 143
12 Jan
- 16 Jan
Frontier Airlines
$ 159
01 Jan
- 29 Jan
Frontier Airlines
$ 160
19 Jan
- 26 Jan
Frontier Airlines
$ 161
19 Jan
- 27 Jan
Frontier Airlines
$ 162
07 Jan
- 15 Jan
Spirit Airlines
$ 167
31 Jan
- 03 Feb
Frontier Airlines
$ 167
26 Jan
- 30 Jan
Frontier Airlines
$ 168
27 Jan
- 02 Feb
Frontier Airlines
$ 170
31 Jan
- 08 Feb
Frontier Airlines
$ 182
28 Jan
- 11 Feb
Spirit Airlines
$ 188
21 Jan
- 11 Feb
Spirit Airlines
$ 189
20 Jan
- 07 Feb
Spirit Airlines
$ 196
28 Jan
- 07 Feb
Spirit Airlines
$ 203
28 Jan
- 13 Feb
Spirit Airlines
$ 204
31 Jan
- 10 Feb
Spirit Airlines
$ 205
Also check the deals for one-way flights from Detroit to San Juan in January .
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