Cheapest return flights from Detroit to San Juan in July from 279€

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

Return flights

13 Jul - 15 Jul Frontier Airlines
01 Jul - 04 Jul Frontier Airlines
07 Jul - 11 Jul Southwest Airlines
10 Jul - 22 Aug Frontier Airlines
03 Jul - 06 Jul Southwest Airlines
10 Jul - 22 Aug Delta direct
01 Jul - 04 Jul Delta direct
07 Jul - 11 Jul Delta direct
13 Jul - 01 Aug Spirit Airlines
01 Jul - 11 Jul Spirit Airlines
03 Jul - 06 Jul Delta direct
01 Jul - 15 Jul Spirit Airlines
01 Jul - 10 Jul Spirit Airlines

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

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