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

One-Way flights

16 Oct	Spirit Airlines	direct
05 Oct	Spirit Airlines	direct
19 Oct	Spirit Airlines	direct
04 Oct	Spirit Airlines
03 Oct	Spirit Airlines
17 Oct	Spirit Airlines
09 Oct	Spirit Airlines	direct
29 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 90€

One-Way flights