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

Return flights

02 Oct - 16 Oct	United	direct
30 Oct - 13 Nov	United	direct
16 Oct - 30 Oct	United	direct
23 Oct - 06 Nov	United	direct
05 Oct - 16 Oct	Spirit Airlines	direct
13 Oct - 28 Oct	United	direct
03 Oct - 17 Oct	United
04 Oct - 18 Oct	United
16 Oct - 19 Oct	Spirit Airlines
16 Oct - 22 Oct	Spirit Airlines
16 Oct - 20 Oct	Spirit Airlines
05 Oct - 19 Oct	Spirit Airlines
19 Oct - 07 Nov	Spirit Airlines
17 Oct - 07 Nov	Spirit Airlines
19 Oct - 09 Nov	Spirit Airlines
21 Oct - 04 Nov	United
22 Oct - 05 Nov	United
18 Oct - 01 Nov	United
27 Oct - 10 Nov	United	direct
28 Oct - 11 Nov	United	direct

Also check the deals for one-way 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 return flights from Houston to San Juan in October from 133€

Return flights