Cheapest return flights from Atlanta to Keflavik in July from $564

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

08 Jul - 15 Jul Frontier Airlines
01 Jul - 08 Jul Frontier Airlines
04 Jul - 11 Jul Frontier Airlines
22 Jul - 27 Jul Frontier Airlines
05 Jul - 12 Jul Frontier Airlines
12 Jul - 19 Jul Frontier Airlines
02 Jul - 09 Jul Frontier Airlines
09 Jul - 16 Jul Frontier Airlines
14 Jul - 21 Jul Frontier Airlines
07 Jul - 14 Jul Frontier Airlines
31 Jul - 07 Aug jetBlue

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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