Cheapest return flights from Austin to St. Croix Island in December from $454

AirHint found the following cheapest return flights from Austin (AUS) to St. Croix Island (STX) in December 2025 (see full year).

Return flights

12 Dec - 14 Dec Spirit Airlines
05 Dec - 05 Jan Spirit Airlines

Also check the deals for one-way flights from Austin to St. Croix Island in December.

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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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