On 20 January 2017, Windbichler joined K League Classic side Ulsan Hyundai. He is the first player from Austria to feature in the K League 1. He left the club at the end of 2018, where his contract expired.[1]
On 28 March 2019, Windbichler signed a short contract with Viborg FF in the Danish 1st Division until the summer 2019.[2] On 28 May 2019, his contract was terminated by mutual consent.[3]