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

Return flights

19 May - 28 May	Iberia	direct
14 May - 18 May	Iberia
14 May - 28 May	Iberia	direct
04 May - 11 May	Iberia
04 May - 18 May	Iberia
05 May - 12 May	Iberia
11 May - 18 May	Iberia
11 May - 19 May	Iberia
11 May - 17 May	Iberia
28 May - 05 Jun	Iberia	direct
03 May - 11 May	Iberia
21 May - 04 Jun	Iberia
23 May - 01 Jun	Iberia
31 May - 09 Jun	Iberia
30 May - 07 Jun	Iberia
24 May - 06 Jun	Iberia
25 May - 01 Jun	Iberia
24 May - 01 Jun	Iberia

Also check the deals for one-way flights from Madrid to San Juan 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 Madrid to San Juan in May from 463€

Return flights