As of June 7, 2021 U.S. and Canada are designated as risk countries by the Spanish government however travelers are allowed to enter Spain with the documentation below https://www.spth.gob.es/info-pcr.
In addition, ALL guests (including children under the age of 12) must complete a Public Health Control Form (FCS) available from the website (https://www.spth.gob.es/more) or the app. ALL guests must complete and send this form to the Spanish health authorities 48 HOURS before the flight to receive an email with a QR Code (QR FAST CONTROL). You must have it printed or have it ready to display on your mobile phone in order to enter Spain.
Adults 18 years and older:
Fully vaccinated: 2 weeks after 2nd injection of Pfizer, Moderna, AstraZeneca or 4 weeks after injection of Johnson & Johnson – no further tests required .
Unvaccinated: Unvaccinated passengers must undergo a diagnostic test to enter Spain. The admitted tests will be: Nucleic acid amplification tests (NAAT, eg RT-PCR, TMA, RT-LAMP) or Rapid antigen detection tests (RAT). The admitted tests are those authorized by the European Commission, which you can consult at the following link.
Passengers recovered from COVID19: may present a certificate of recovery ( see https://www.spth.gob.es/info-pcr for details).
Children - between 12-18 years of age require a negative RT-PCR or antigen test within 48 hours prior to arrival.