AirHint found the following cheapest return flights from San Juan (SJU) to Madrid (MAD) in May 2026 (see full year).

Return flights

10 May - 26 May	American Airlines	direct
18 May - 31 May	British Airways
18 May - 31 May	Iberia	direct
14 May - 21 May	Iberia	direct
29 May - 12 Jun	Avianca
21 May - 30 May	Avianca
31 May - 12 Jun	Avianca
21 May - 30 May	British Airways	direct
31 May - 12 Jun	Iberia	direct
24 May - 31 May	Iberia	direct
29 May - 12 Jun	Iberia	direct
28 May - 08 Jun	Avianca
04 May - 11 May	Iberia
22 May - 07 Jun	Avianca
22 May - 07 Jun	Iberia	direct
28 May - 08 Jun	Iberia	direct

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

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 May from $450

Return flights