Cheapest return flights from Atlanta to Keflavik in October from $355

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 October 2025 (see full year).

Return flights

21 Oct - 29 Oct Spirit Airlines
30 Oct - 06 Nov Spirit Airlines
23 Oct - 30 Oct Spirit Airlines
10 Oct - 18 Oct Spirit Airlines
05 Oct - 13 Oct Spirit Airlines
13 Oct - 21 Oct Spirit Airlines
11 Oct - 19 Oct Spirit Airlines
04 Oct - 12 Oct Spirit Airlines
03 Oct - 11 Oct Spirit Airlines
09 Oct - 12 Oct Spirit Airlines
02 Oct - 10 Oct jetBlue

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

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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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