Cheapest return ATL–KEF flights, August

AirHint found the following cheapest return flights from Atlanta (ATL) to Keflavik (KEF) in August 2026 (see full year).

Return flights

24 Aug - 31 Aug Frontier Airlines
25 Aug - 01 Sep Frontier Airlines
26 Aug - 02 Sep Frontier Airlines
22 Aug - 29 Aug Frontier Airlines
30 Aug - 06 Sep Frontier Airlines
29 Aug - 05 Sep Icelandair
31 Aug - 07 Sep Frontier Airlines
28 Aug - 04 Sep Frontier Airlines
20 Aug - 27 Aug Icelandair
21 Aug - 28 Aug Frontier Airlines
27 Aug - 03 Sep jetBlue
23 Aug - 30 Aug Frontier Airlines
12 Aug - 19 Aug Frontier Airlines
11 Aug - 23 Aug WestJet
03 Aug - 10 Aug WestJet
14 Aug - 19 Aug WestJet
11 Aug - 18 Aug Frontier Airlines
28 Aug - 07 Sep WestJet

Also check the deals for one-way flights from Atlanta to Keflavik in August.

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