AirHint found the following cheapest return flights from Detroit (DTW) to San Juan (SJU) in May 2026 (see full year).
Return flights
| 26 May - 02 Jun | Delta | direct | |
| 13 May - 18 May | Southwest Airlines | ||
| 02 May - 12 May | Delta | direct | |
| 05 May - 09 May | Southwest Airlines | ||
| 13 May - 18 May | Delta | direct | |
| 09 May - 24 May | Delta | direct |
Also check the deals for one-way flights from Detroit to San Juan in May.
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