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

Return flights

23 Jan - 01 Feb	United	direct
15 Jan - 22 Jan	United	direct
21 Jan - 07 Feb	United	direct
16 Jan - 18 Jan	United
07 Jan - 16 Jan	Southwest Airlines
21 Jan - 08 Feb	United	direct
01 Jan - 08 Jan	United

Also check the deals for one-way flights from Houston 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 Houston to San Juan in January from 353€

Return flights