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

One-Way flights

24 Aug	Southwest Airlines
12 Aug	Spirit Airlines
09 Aug	Spirit Airlines	direct
05 Aug	Spirit Airlines	direct
02 Aug	Spirit Airlines	direct
12 Aug	Spirit Airlines	direct
03 Aug	Spirit Airlines	direct
31 Aug	Spirit Airlines	direct
23 Aug	Southwest Airlines
11 Aug	Spirit Airlines

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

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 August from 70€

One-Way flights