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

Return flights

13 May - 20 May	Avianca
12 May - 19 May	Avianca
20 May - 29 May	Avianca
08 May - 10 May	Avianca
27 May - 12 Jun	Avianca
28 May - 12 Jun	Avianca
30 May - 13 Jun	Avianca
29 May - 13 Jun	Avianca
21 May - 30 May	Avianca
29 May - 05 Jun	Avianca
05 May - 12 May	jetBlue
04 May - 08 May	Avianca
10 May - 22 May	jetBlue
03 May - 29 May	jetBlue
10 May - 26 May	jetBlue
24 May - 10 Jun	Avianca
24 May - 12 Jun	Avianca
24 May - 11 Jun	Avianca
22 May - 10 Jun	Avianca
26 May - 02 Jun	jetBlue

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 $578

Return flights