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

One-Way flights

03 Dec	Spirit Airlines	direct
10 Dec	Spirit Airlines
14 Dec	Frontier Airlines
04 Dec	Spirit Airlines	direct
17 Dec	Spirit Airlines	direct
12 Dec	Spirit Airlines
18 Dec	Spirit Airlines	direct
23 Dec	Spirit Airlines
25 Dec	Spirit Airlines	direct
22 Dec	Spirit Airlines	direct

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

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 December from 90€

One-Way flights