pf2e.fyi
From Pathfinder Lost Omens Cheliax, Infernal Inheritance, which isn't enabled.

Fully Flighted

FEAT 9
STRIX
Prerequisites Juvenile Flight

You can take to the skies at any time. You have a fly Speed of 25 feet at all times.

Special You can take this feat a second time. If you do, your fly Speed increases to 35 feet.
Pathfinder Lost Omens Cheliax, Infernal InheritanceORC