If you intend to use the Cronos web portal for filing a flight plan (V/Z/Y), you need to apply for a user account in the system by filling out the registration form at the link below:
Flight plan
Operators create flight plan in accordance with AIP Iceland ENr 1.10 and submit it to air navigation services before their flight.
Flight plans can be submitted via phone:+354 424 4242
IFR flight plans
Detailed information on flight plans can be found in section ENR 1.10 of the AIP Iceland.