I bought a plane ticket from TAP Air, which goes Frankfurt -> Lisbon -> Toronto (one way), and the taxes applied to this ticket are pretty high. Sadly, I can't make this flight due to personal reasons, so I thought I'd ask for a refund of the airport tax.
I'm unsure how to proceed on this. Numerous articles around the internet say that I can ask for the money back, but I never found any EU law that states this.
Are airlines indeed required to refund this money? If so, how do I proceed with asking about it? The flight is tomorrow... Do I even have time?