Cheapest one-way flights from San Juan to Keflavik in January from 267€

AirHint found the following cheapest one-way flights from San Juan (SJU) to Keflavik (KEF) in January 2026 (see full year).

One-Way flights

19 Jan Frontier Airlines
28 Jan Frontier Airlines
27 Jan Frontier Airlines
24 Jan jetBlue
26 Jan Frontier Airlines
23 Jan Frontier Airlines
22 Jan Spirit Airlines
12 Jan Frontier Airlines
13 Jan Frontier Airlines
18 Jan Frontier Airlines

Also check the deals for return flights from San Juan to Keflavik in January.

Powered by

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.