Cheapest return flights from Atlanta to Keflavik in September from $872

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 September 2025 (see full year).

Return flights

19 Sep - 24 Sep Icelandair

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

Skyscanner

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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