AirHint found the following cheapest return flights from Houston (IAH) to St. Thomas (STT) in December 2025 (see full year).

Return flights

11 Dec - 20 Dec	Spirit Airlines
11 Dec - 25 Dec	Spirit Airlines
12 Dec - 25 Dec	Spirit Airlines
12 Dec - 20 Dec	Spirit Airlines
11 Dec - 21 Dec	Spirit Airlines
11 Dec - 26 Dec	Spirit Airlines
11 Dec - 30 Dec	Spirit Airlines
21 Dec - 25 Dec	Spirit Airlines
22 Dec - 25 Dec	Spirit Airlines
12 Dec - 21 Dec	Spirit Airlines
21 Dec - 07 Jan	Spirit Airlines
22 Dec - 07 Jan	Spirit Airlines
27 Dec - 07 Jan	Spirit Airlines

Also check the deals for one-way flights from Houston to St. Thomas 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 return flights from Houston to St. Thomas in December from $284

Return flights