Cheapest return flights from Austin to Keflavik in October from 358€

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

Return flights

11 Oct - 22 Oct Spirit Airlines
14 Oct - 21 Oct Spirit Airlines
15 Oct - 22 Oct Spirit Airlines
04 Oct - 11 Oct Spirit Airlines
17 Oct - 24 Oct Frontier Airlines
02 Oct - 09 Oct Frontier Airlines
08 Oct - 15 Oct Spirit Airlines
11 Oct - 18 Oct Spirit Airlines
07 Oct - 14 Oct Spirit Airlines
16 Oct - 23 Oct Frontier Airlines
25 Oct - 01 Nov Spirit Airlines

Also check the deals for one-way flights from Austin 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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