Cheapest one-way flights from San Jose to Keflavik in December from $445

AirHint found the following cheapest one-way flights from San Jose (SJC) to Keflavik (KEF) in December 2025 (see full year).

One-Way flights

03 Dec Hawaiian Airlines
30 Dec Icelandair

Also check the deals for return flights from San Jose to Keflavik in December.

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Feel free to contact us with any feedback or request another flight research.