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

Return flights

18 Nov - 25 Nov	British Airways
27 Nov - 04 Dec	Alaska Airlines
26 Nov - 03 Dec	British Airways
19 Nov - 26 Nov	Hawaiian Airlines
28 Nov - 05 Dec	British Airways
29 Nov - 06 Dec	British Airways
25 Nov - 02 Dec	British Airways
24 Nov - 01 Dec	Frontier Airlines

Also check the deals for one-way flights from San Francisco to Keflavik in November.

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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Cheapest return flights from San Francisco to Keflavik in November from $633

Return flights