As one of the many modalities of personal data processing, the international transfer of personal data has emerged as a crucial element in the modern digital economy. Namely, given the widespread use of various digital services, new opportunities arise for personal data processing and, consequently, for their transfer. Therefore, these transfers must be carried out in such a way as to protect the personal data of the data subjects from any data breach, thus ensuring the rights of natural persons. Following the above, this paper aims to analyze the current system of international transfers of personal data under the General Data Protection Regulation (EU) 2016/679 (hereinafter: the Regulation), together with other related legal sources and other current events in the subject area. For example, the CJEU's decision in the Schrems II judgement had a significant impact on the interpretation of the Regulation and how international transfers must be carried out, creating new requirements in this context to ensure the protection of individuals. In addition, the area of international data transfers was shaped in 2021 by the United Kingdom's withdrawal from the EU, which challenged the regular transfers of data in that country, mainly because the Regulation no longer applies. This paper is divided into two thematic units. The first part analyzes the mechanisms of international personal data transfers to third countries under the provisions of the Regulation. The second part examines the effects of the Schrems II judgment on the further development of the transfer mechanisms established by the Regulation, and a brief overview of personal data flows inside and outside the UK following exit from the EU.