AirHint found the following cheapest return flights from Managua (MGA) to San Juan (SJU) in August 2025 (see full year).

Return flights

16 Aug - 22 Aug	Spirit Airlines
12 Aug - 18 Aug	Avianca
11 Aug - 14 Aug	Avianca
17 Aug - 23 Aug	Avianca
16 Aug - 23 Aug	Spirit Airlines
11 Aug - 18 Aug	Avianca
08 Aug - 24 Aug	Avianca
09 Aug - 24 Aug	Spirit Airlines
16 Aug - 17 Aug	Spirit Airlines
11 Aug - 17 Aug	Copa

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

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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Cheapest return flights from Managua to San Juan in August from 337€

Return flights