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

Return flights

10 Dec - 15 Dec	Spirit Airlines
14 Dec - 15 Dec	Spirit Airlines
10 Dec - 12 Dec	Spirit Airlines
12 Dec - 15 Dec	Spirit Airlines
17 Dec - 06 Jan	Spirit Airlines
14 Dec - 25 Dec	Spirit Airlines
14 Dec - 21 Dec	Spirit Airlines
14 Dec - 18 Dec	Spirit Airlines
14 Dec - 31 Dec	Spirit Airlines
16 Dec - 25 Dec	Spirit Airlines
16 Dec - 21 Dec	Spirit Airlines
16 Dec - 06 Jan	Spirit Airlines
18 Dec - 06 Jan	Spirit Airlines
19 Dec - 06 Jan	Spirit Airlines
26 Dec - 06 Jan	Spirit Airlines

Also check the deals for one-way flights from Chicago to Atlanta 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 Chicago to Atlanta in December from 158€

Return flights