Before booking a trip abroad, it is important to check that all travellers comply with entry or transit formalities of the destinantion. You can consult the website of the Ministry of Foreign Affairs according to your nationality.

Here are the links as an example for :

– French residents: https://diplomatie.gouv.fr

– Belgian residents: https://diplomatie.belgium.be/fr

– Swiss residents: https://www.dfae.admin.ch/eda/fr/dfae.html