ukr.vitalinguist — How to say it in authentic Ukrainian

in honor of
B2 noun — in honor of sb/sth

in order to celebrate or show respect for someone or something

Bilingual dictionary attestations (1 dicts, 2 rows)

Українсько-англійський словник
конда́к (-ка́) m church canticle ( in honor of a feast).
Українсько-англійський словник
маї́вка (-ки) f May holidays (play hours) for students; Ent. May bug; Bot. marsh marigold: maize (sown in May); church service in honor of Virgin Mary (in May).

Live source: https://e2u.org.ua/s?w=in%20honor%20of&highlight=on