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

Return flights

16 Jul - 23 Jul	Frontier Airlines
14 Jul - 23 Jul	Frontier Airlines
08 Jul - 15 Jul	Air France
07 Jul - 21 Jul	British Airways
29 Jul - 05 Aug	United
14 Jul - 21 Jul	British Airways
09 Jul - 16 Jul	British Airways
11 Jul - 18 Jul	Spirit Airlines
10 Jul - 17 Jul	jetBlue
31 Jul - 07 Aug	United
14 Jul - 27 Jul	Frontier Airlines
11 Jul - 15 Jul	KLM
27 Jul - 11 Aug	British Airways
27 Jul - 03 Aug	United
22 Jul - 08 Aug	United
22 Jul - 05 Aug	United
16 Jul - 01 Aug	jetBlue
22 Jul - 01 Aug	jetBlue
21 Jul - 04 Aug	jetBlue
18 Jul - 01 Aug	jetBlue

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

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 July from $666

Return flights