Bhat was born in Bhadravati, an industrial city in the Shimoga district of Indian state of Karnataka on 5 September 1992 to Kannada Brahmin parents Subrahmanya and Shyamala Bhat. Both her parents are medical laboratory technicians and have been serving the Bhadravati city clinical laboratories. She has one elder sister, Dr. Akshatha, who is a paediatrician.

In the year 2014, she participated in Miss Diva pageant organized by The Times Group and was crowned Miss India Supranational 2014, next to Alankrita Sahai who was crowned Miss India Earth 2014 and Noyonita Lodh, the eventual winner of the contest and was crowned Miss India Universe, at the grand finale of the pageant held on 14 October 2014 at Westin Mumbai Garden City in Mumbai. Asha also won three special awards at Miss Diva 2014 including, Miss Congeniality, Miss Beautiful Smile and Miss Fascinating.

She represented India at Miss Supranational 2014 held in Krynica-Zdrój in Poland and was crowned the eventual winner on the grand finale of the pageant held on 5 December 2014. She also won the special award for “Best in Talent” at the pageant. She was crowned Miss Supranational 2014 by the outgoing titleholder Miss Supranational 2013, Mutya Johanna Datul from Philippines.

In the month of May 2015, she travelled to Thailand. She judged the grand finale of Miss Grand Thailand and along with Miss Supranational 2014 first runner up and the winner of Miss Grand Thailand 2014, Parapadsorn Disdamrong she crowned Tharathip Sukdarunpat as Miss Supranational Thailand at the conclusion of the event held on 12 May 2015 at Indoor Stadium Huamark in Bangkok, Thailand