Cheapest return flights from Atlanta to Lisbon in December from $480

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

Return flights

10 Dec - 15 Dec Spirit Airlines
06 Dec - 10 Dec Frontier Airlines
03 Dec - 07 Jan Frontier Airlines
13 Dec - 25 Dec British Airways
03 Dec - 27 Dec United
10 Dec - 13 Dec Frontier Airlines
06 Dec - 27 Dec United
24 Dec - 17 Jan British Airways
14 Dec - 26 Dec Air Canada
29 Dec - 10 Jan Air France
16 Dec - 10 Jan Frontier Airlines
10 Dec - 31 Dec British Airways
17 Dec - 07 Jan Frontier Airlines
13 Dec - 26 Dec British Airways
13 Dec - 27 Dec Spirit Airlines
22 Dec - 17 Jan Frontier Airlines
26 Dec - 17 Jan Frontier Airlines
14 Dec - 05 Jan Frontier Airlines
15 Dec - 05 Jan Frontier Airlines
16 Dec - 05 Jan Frontier Airlines

Also check the deals for one-way flights from Atlanta to Lisbon in December.

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