Cheapest return flights from Atlanta to Keflavik in October from $363

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

Return flights

11 Oct - 18 Oct Spirit Airlines
15 Oct - 21 Oct Frontier Airlines
18 Oct - 25 Oct Spirit Airlines
19 Oct - 26 Oct Frontier Airlines
08 Oct - 13 Oct Spirit Airlines
30 Oct - 05 Nov Spirit Airlines
03 Oct - 12 Oct Spirit Airlines
11 Oct - 17 Oct Delta

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

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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