As instructed by the Luxembourgish government, passengers returning to Luxembourg must meet the following conditions: • be in possession of a negative PCR test dating back to less than 48 hours; • be in possession of a negative PCR test dating between 48 and 72 hours. These people must undergo a new PCR test at Luxembourg airport and self-quarantine until the test result is obtained; 
 
Antigenic tests are also accepted under the same conditions. These include tests that achieve a sensitivity of ?80% and a specificity of ?97% compared to PCR tests in alignment with the criteria established by the WHO (Antigen detection in the diagnosis of SARS-CoV-2 infection using rapid immunoassays. Interim guidance, September 11, 2020.) 
 
Luxair flights can be consulted on the website www.luxair.lu or by contacting the Luxair Call Center.