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

One-Way flights

21 Oct	United	direct
26 Oct	Spirit Airlines	direct
03 Oct	Spirit Airlines
08 Oct	Spirit Airlines
25 Oct	Spirit Airlines
13 Oct	Spirit Airlines
10 Oct	Spirit Airlines
14 Oct	Spirit Airlines
09 Oct	Spirit Airlines	direct
11 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 $78

One-Way flights