Cheapest return flights from Keflavik to Buenos Aires in September from $1573

AirHint found the following cheapest return flights from Keflavik (KEF) to Buenos Aires (AEP) in September 2026 (see full year).

Return flights

18 Sep - 02 Oct easyJet
14 Sep - 28 Sep Icelandair

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

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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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