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

Return flights

19 Aug - 26 Aug	Iberia	direct
10 Aug - 20 Aug	British Airways	direct
05 Aug - 12 Aug	Air France
18 Aug - 02 Sep	KLM
03 Aug - 12 Aug	Air France
12 Aug - 26 Aug	Finnair	direct
11 Aug - 20 Aug	KLM
14 Aug - 07 Sep	British Airways	direct
27 Aug - 03 Sep	Iberia	direct
04 Aug - 19 Aug	United
17 Aug - 24 Aug	Iberia	direct
04 Aug - 12 Aug	KLM
18 Aug - 25 Aug	British Airways	direct
25 Aug - 01 Sep	Iberia
20 Aug - 01 Sep	United
29 Aug - 08 Sep	KLM
29 Aug - 14 Sep	KLM
18 Aug - 02 Sep	Finnair	direct
19 Aug - 02 Sep	Iberia	direct
28 Aug - 09 Sep	British Airways

Also check the deals for one-way flights from San Juan to Madrid 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 San Juan to Madrid in August from 432€

Return flights