Cheapest return flights from Atlanta to Lisbon in May from $576

AirHint found the following cheapest return flights from Atlanta (ATL) to Lisbon (LIS) in May 2026 (see full year).

Return flights

05 May - 20 May British Airways
06 May - 13 May British Airways
10 May - 20 May Finnair
01 May - 10 May British Airways
07 May - 16 May Frontier Airlines
10 May - 18 May Frontier Airlines
19 May - 27 May Frontier Airlines
06 May - 24 May Frontier Airlines
21 May - 29 May Spirit Airlines
10 May - 16 May British Airways
24 May - 01 Jun Spirit Airlines
29 May - 05 Jun Spirit Airlines
25 May - 02 Jun Spirit Airlines
31 May - 06 Jun Frontier Airlines
30 May - 06 Jun Spirit Airlines
26 May - 02 Jun Frontier Airlines
25 May - 01 Jun Frontier Airlines

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

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