You need a visa for Sierra Leone if you have an Icelandic passport
Visa options for Sierra Leone
Electronic visa (eVisa)
Electronic visitor visa
Travelers need a visa to visit Sierra Leone for Business or Tourism. A Sierra Leone eVisa is the fastest and easiest way of obtaining a visa for Sierra Leone because travelers can submit their applications and supporting documents online. Once the application is approved, travelers receive their eVisa confirmation electronically. A valid visa is required to board the flight. If the visa is expired or doesn’t match the traveler’s passport information, travelers will not be able to board their flight.
This is not offered by sherpa°.
Apply on the government site.
