Cheapest return flights from San Jose (SJC) to Keflavik (KEF), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
29 Sep 06 Oct Alaska Airlines
30 Sep 07 Oct Alaska Airlines
24 Sep 01 Oct Alaska Airlines
25 Sep 02 Oct Alaska Airlines
09 Sep 16 Sep Icelandair
01 Sep 08 Sep Icelandair
02 Sep 09 Sep Alaska Airlines
08 Sep 15 Sep Alaska Airlines
28 Sep 05 Oct Alaska Airlines
15 Sep 27 Sep Icelandair
11 Sep 18 Sep Alaska Airlines
27 Sep 04 Oct Alaska Airlines
18 Sep 25 Sep Alaska Airlines
17 Sep 24 Sep Icelandair
12 Sep 19 Sep Alaska Airlines
05 Sep 12 Sep Icelandair
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Updated Jun 14, 2026.

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