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

Return flights

04 May - 08 May	jetBlue
13 May - 21 May	United
12 May - 20 May	United
18 May - 26 May	United
09 May - 17 May	Scandinavian Airlines
11 May - 19 May	Delta
19 May - 27 May	United
15 May - 06 Jun	jetBlue
10 May - 18 May	Scandinavian Airlines
21 May - 29 May	jetBlue
25 May - 02 Jun	jetBlue
26 May - 03 Jun	jetBlue
14 May - 22 May	United
24 May - 01 Jun	jetBlue
27 May - 04 Jun	United
29 May - 06 Jun	jetBlue
30 May - 07 Jun	jetBlue
31 May - 08 Jun	United
28 May - 05 Jun	United

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

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 Atlanta to Keflavik in May from $666

Return flights