Cheapest return flights from San Francisco to Keflavik in October from 486€

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

Return flights

05 Oct - 11 Oct WestJet
15 Oct - 23 Oct Hawaiian Airlines
11 Oct - 16 Oct Hawaiian Airlines
03 Oct - 12 Oct jetBlue

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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