The only free and comprehensive online etymological dictionary of the Spanish language
volar (Verb) "to fly;" "to blow up"
13th cent. From Latin volare "to fly." From Proto-Italic *gwela-je/o- 'id.' From Proto-Indo-European *gwelh1-i̯e/o- "to raise an arm."
Indo-European
Romance
Catalan voler, French vouloir, volition, Italian volere, Aromanian voi, Romanian vrea, Sardinian bòliri
Celtic
Old Irish a-t-baill "to die"
Hellenic
Ancient Greek βάλλειν (bállein) "to hit by throwing"
Indo-Iranian
Sanskrit gari "to raise an arm (in order to strike)"