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

Return flights

03 Nov - 11 Nov	Spirit Airlines
01 Nov - 08 Nov	Spirit Airlines
04 Nov - 11 Nov	Spirit Airlines
08 Nov - 16 Nov	Spirit Airlines
09 Nov - 17 Nov	Spirit Airlines
02 Nov - 10 Nov	Spirit Airlines
02 Nov - 09 Nov	Spirit Airlines
06 Nov - 13 Nov	Spirit Airlines
07 Nov - 15 Nov	Spirit Airlines
20 Nov - 28 Nov	Lufthansa
28 Nov - 06 Dec	jetBlue

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

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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Cheapest return flights from Atlanta to Keflavik in November from $524

Return flights