Cheapest return flights from San Jose to Keflavik in June from $698

Best time to book flights for San Jose (SJC) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from San Jose (SJC) to Keflavik (KEF) in June 2025 (see full year).

Return flights

25 Jun - 02 Jul Spirit Airlines
14 Jun - 21 Jun Spirit Airlines
28 Jun - 12 Jul Spirit Airlines
15 Jun - 22 Jun Spirit Airlines
30 Jun - 14 Jul Alaska Airlines
28 Jun - 13 Jul Spirit Airlines
29 Jun - 13 Jul Spirit Airlines
05 Jun - 09 Jun Alaska Airlines
16 Jun - 20 Jun Icelandair
28 Jun - 06 Jul Icelandair
27 Jun - 06 Jul Icelandair

Also check the deals for one-way flights from San Jose to Keflavik in June.

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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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