Cheapest return flights from St. Louis to Atlanta in December from $75

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

Return flights

23 Dec - 28 Dec Frontier Airlines direct
05 Dec - 07 Dec Frontier Airlines direct
04 Dec - 07 Dec Frontier Airlines direct
04 Dec - 08 Dec Frontier Airlines direct
03 Dec - 05 Dec Frontier Airlines
25 Dec - 28 Dec Frontier Airlines direct
17 Dec - 21 Dec Frontier Airlines
03 Dec - 06 Dec Frontier Airlines
16 Dec - 21 Dec Frontier Airlines
18 Dec - 12 Jan Frontier Airlines
31 Dec - 04 Jan Frontier Airlines
18 Dec - 12 Jan Southwest Airlines direct
12 Dec - 14 Dec Southwest Airlines
26 Dec - 01 Jan American Airlines
27 Dec - 01 Jan Frontier Airlines
30 Dec - 02 Jan Delta direct
26 Dec - 01 Jan Delta direct
27 Dec - 01 Jan Delta direct
31 Dec - 04 Jan Delta direct

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