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

Return flights

11 Dec - 14 Dec	Spirit Airlines
03 Dec - 07 Dec	Spirit Airlines
30 Dec - 11 Jan	Delta	direct
30 Dec - 06 Jan	Frontier Airlines
29 Dec - 05 Jan	Frontier Airlines
29 Dec - 06 Jan	Frontier Airlines
28 Dec - 06 Jan	Spirit Airlines
10 Dec - 14 Dec	Frontier Airlines
26 Dec - 02 Jan	Frontier Airlines
19 Dec - 29 Dec	Spirit Airlines
30 Dec - 06 Jan	Delta	direct
29 Dec - 06 Jan	Delta	direct
27 Dec - 03 Jan	Frontier Airlines
26 Dec - 29 Dec	Spirit Airlines
19 Dec - 02 Jan	Spirit Airlines

Also check the deals for one-way flights from Atlanta to St. Croix Island 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.

Book a cheap hotel in St. Croix Island

Cheap car rent in St. Croix Island

Cheapest return flights from Atlanta to St. Croix Island in December from 518€

Return flights