Cheapest return flights from Atlanta to Keflavik in July from $486

Best time to book flights for Atlanta (ATL) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Atlanta (ATL) to Keflavik (KEF) in July 2025 (see full year).

Return flights

09 Jul - 16 Jul Frontier Airlines
30 Jul - 06 Aug Spirit Airlines
10 Jul - 17 Jul Frontier Airlines
14 Jul - 21 Jul Frontier Airlines
23 Jul - 28 Jul Spirit Airlines
07 Jul - 14 Jul jetBlue
23 Jul - 30 Jul Spirit Airlines
15 Jul - 22 Jul Frontier Airlines
02 Jul - 09 Jul Frontier Airlines
16 Jul - 23 Jul Frontier Airlines
17 Jul - 24 Jul Frontier Airlines
26 Jul - 02 Aug Spirit Airlines

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

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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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