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

Return flights

21 Jan - 29 Jan	Lufthansa
21 Jan - 28 Jan	Lufthansa
21 Jan - 30 Jan	Lufthansa
21 Jan - 31 Jan	Wizz Air
13 Jan - 26 Jan	Ryanair
26 Jan - 10 Feb	Finnair
08 Jan - 22 Jan	Ryanair
04 Jan - 11 Jan	Norwegian Air Sweden AOC

Also check the deals for one-way flights from Oslo 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 Oslo to San Juan in January from 348€

Return flights