Cheapest return flights from Houston to St. Thomas in September from $280

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

Return flights

25 Sep - 27 Sep Spirit Airlines
25 Sep - 28 Sep Spirit Airlines
20 Sep - 27 Sep Spirit Airlines
08 Sep - 12 Sep Spirit Airlines
20 Sep - 28 Sep Spirit Airlines
27 Sep - 28 Sep Spirit Airlines
08 Sep - 27 Sep Spirit Airlines
08 Sep - 28 Sep Spirit Airlines
27 Sep - 04 Oct Spirit Airlines
25 Sep - 04 Oct Spirit Airlines
20 Sep - 04 Oct Spirit Airlines
27 Sep - 04 Oct United direct

Also check the deals for one-way flights from Houston to St. Thomas in September.

Skyscanner

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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