Cheapest return DTW–SJU flights, August

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

Return flights

10 Aug - 12 Aug Frontier Airlines
01 Aug - 31 Aug Frontier Airlines
17 Aug - 27 Aug Frontier Airlines
01 Aug - 03 Aug Frontier Airlines
07 Aug - 10 Aug Frontier Airlines
26 Aug - 31 Aug Frontier Airlines
10 Aug - 14 Aug Frontier Airlines
01 Aug - 30 Aug Frontier Airlines
22 Aug - 28 Aug Frontier Airlines
07 Aug - 15 Aug Frontier Airlines

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

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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