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

Return flights

25 Jan - 03 Feb	TAP
20 Jan - 27 Jan	Iberia	direct
21 Jan - 28 Jan	Iberia	direct
26 Jan - 02 Feb	British Airways
28 Jan - 04 Feb	Iberia
26 Jan - 05 Feb	British Airways
26 Jan - 10 Feb	British Airways
28 Jan - 03 Feb	British Airways
29 Jan - 12 Feb	British Airways
15 Jan - 21 Jan	British Airways
22 Jan - 29 Jan	Iberia
13 Jan - 20 Jan	Iberia
19 Jan - 26 Jan	Iberia
13 Jan - 27 Jan	Iberia
22 Jan - 28 Jan	Iberia
22 Jan - 26 Jan	British Airways
19 Jan - 27 Jan	Iberia
14 Jan - 05 Feb	Iberia
21 Jan - 06 Feb	Iberia	direct
27 Jan - 01 Feb	British Airways

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

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 January from 526€

Return flights