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

Return flights

21 Jan - 28 Jan	Finnair	direct
19 Jan - 29 Jan	Iberia	direct
22 Jan - 29 Jan	Iberia
23 Jan - 28 Jan	Finnair	direct
29 Jan - 08 Feb	Iberia
29 Jan - 07 Feb	Iberia
15 Jan - 22 Jan	Iberia
17 Jan - 24 Jan	Iberia
30 Jan - 08 Feb	Iberia
30 Jan - 07 Feb	Iberia
24 Jan - 13 Feb	Finnair	direct
15 Jan - 25 Jan	British Airways
29 Jan - 08 Feb	Iberia	direct
12 Jan - 21 Jan	British Airways
19 Jan - 24 Jan	Iberia
30 Jan - 07 Feb	Iberia	direct
12 Jan - 07 Feb	British Airways
10 Jan - 17 Jan	Iberia

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 508€

Return flights