AirHint found the following cheapest one-way flights from Houston (HOU) to San Juan (SJU) in October 2025 (see full year).

One-Way flights

17 Oct	United	direct
21 Oct	United	direct
16 Oct	United
31 Oct	United
16 Oct	Spirit Airlines	direct
26 Oct	Spirit Airlines	direct
31 Oct	United	direct
09 Oct	Spirit Airlines	direct
13 Oct	Spirit Airlines

Also check the deals for return flights from Houston to San Juan in October.

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 one-way flights from Houston to San Juan in October from 66€

One-Way flights