Do I need a visa to enter Turkey?
Most European visitors to Turkey will need to purchase a Tourist Visa to enter the country. The cost of this varies according nationality.
A good way to have a look and see what the entry requirements are, depending on passport issuing country and where you are travelling from and to, is to put in the information on the link below and then double check with the countries foreign office.
https://www.turkishairlines.com/en-gb/announcements/coronavirus-outbreak/travel-restrictions/
or the Turkish Governments site
https://www.mfa.gov.tr/visa-information-for-foreigners.en.mfa