The Ministry of Foreign and European Affairs recommends Luxembourg nationals and residents who are currently abroad, especially outside of the Schengen space, and depending on their particular situation, to check with their travel agency and/or airline for return flights to Luxembourg. If needed, contact the Luxembourg embassy accredited to the country in question https://maee.gouvernement.lu/fr/missions-diplomatiques/missions-diplomatiques-et-consulaires-luxembourgeoises.html, or the Ministry of Foreign and European Affairs https://maee.gouvernement.lu/fr/directions-du-ministere/affaires-consulaires.html.