Cheapest return flights from Phoenix to Keflavik in October from $617

Best time to book flights for Phoenix (PHX) to Keflavik (KEF) flights at AirHint

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

Return flights

25 Oct - 02 Nov Frontier Airlines
02 Oct - 07 Oct Alaska Airlines
26 Oct - 04 Nov British Airways
24 Oct - 02 Nov Frontier Airlines
12 Oct - 21 Oct Air France
14 Oct - 23 Oct Air France
07 Oct - 16 Oct Air France
29 Oct - 07 Nov British Airways
27 Oct - 05 Nov British Airways
15 Oct - 23 Oct Alaska Airlines
05 Oct - 14 Oct Hawaiian Airlines
10 Oct - 19 Oct Alaska Airlines
15 Oct - 24 Oct Delta
08 Oct - 16 Oct Delta
01 Oct - 09 Oct Hawaiian Airlines

Also check the deals for one-way flights from Phoenix 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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