Cheapest return flights from Atlanta to Keflavik in March from $540

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

Return flights

04 Mar - 11 Mar Frontier Airlines
28 Mar - 03 Apr jetBlue
01 Mar - 08 Mar Frontier Airlines
12 Mar - 16 Mar Frontier Airlines
30 Mar - 05 Apr Lufthansa
02 Mar - 09 Mar Frontier Airlines
05 Mar - 12 Mar jetBlue
19 Mar - 26 Mar jetBlue
15 Mar - 22 Mar Frontier Airlines
09 Mar - 16 Mar Frontier Airlines
13 Mar - 20 Mar Icelandair

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

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