Descriptive statistical data of the review, acceptance and publication dates of a sample of 21890 articles from 326 Ibero-American scientific journals from all subject areas and countries included in the Latindex Catalogue 2.0 and published between 2018 and 2020. Number of cases, average, median, mode, maximum and standard deviation of the evaluation, publication and total days, disaggregated by document type, periodicity, subject area and country are included in the dataset. Also data about the number of journals by subject area and country used to build the analysed sample database are included.