Cheapest return flights from San Francisco to Keflavik in October from 463€

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

Return flights

04 Oct - 11 Oct WestJet
29 Oct - 05 Nov Frontier Airlines
23 Oct - 30 Oct Frontier Airlines
14 Oct - 21 Oct Hawaiian Airlines
15 Oct - 22 Oct Hawaiian Airlines
22 Oct - 29 Oct Hawaiian Airlines
27 Oct - 03 Nov Frontier Airlines
30 Oct - 06 Nov Frontier Airlines
01 Oct - 08 Oct Hawaiian Airlines
09 Oct - 16 Oct Hawaiian Airlines
28 Oct - 04 Nov British Airways
18 Oct - 25 Oct Hawaiian Airlines
15 Oct - 23 Oct Hawaiian Airlines
24 Oct - 31 Oct Alaska Airlines
25 Oct - 01 Nov Hawaiian Airlines
31 Oct - 07 Nov jetBlue
26 Oct - 02 Nov Alaska Airlines

Also check the deals for one-way flights from San Francisco 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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