Since Monday 23rd of November Spanish government started demanding a negative COVID19 PCR test from all passenger arriving at Spanish ports and airports .
Passengers must carry the document that confirms the negative test result, dated within 72 hours, when they travel. This must be an original copy, in paper or electronic format and it must contain the traveller’s name and surname, passport or ID card number, date of the test, identification and contact details of the medical centre where the test was carried out, the technique used and the negative result (Only PCR test guarantee a sure and safe entrance in Spain).
Airlines usually warn the passengers a few days before the flight. You can also check the requirement from AENA website (Spanish Airport Operator) for more details in the following link: http://aena.es/en/informationcovid19coronavirusairportsandflights.html
This info is also available in Spanish, French and German in the same site.
There you can find the info you need to know everything about the mandatory health control process.
Once in Spain there are mobility restrictions that will not affect you as passenger in transit. To avoid problems with local law enforcement we recommend you keep your boarding pass with you at all times while in Spain.
You can also check this video for more information: