I have an upcoming trip to Spain and it didn't occur to me to check entry requirements for flying within Spain. I just saw that Iberia Airlines has the following info regarding entering the Balearic Islands region:
Other fully vaccinated passengers
Foreign nationals who are fully vaccinated must present one of the following options:
OPTION 1: PCR COVID-19 test result taken within 72 hours prior to arrival.
OPTION 2: antigen COVID-19 test result taken within 48 hours prior to arrival.
I am assuming they would accept the test results from an at home antigen test? I'll be purchasing a pack from Abbott BinaxNow and taking those with me.