[10] Alfian and Ardianto competed on the BWF World Tour, and won titles at the 2018 Malaysia Masters and the Syed Modi International;[11][12] and also the 2019 Swiss and Korea Opens.

[30][31][32] In October, they won their fourth title of the year at the Denmark Open in a tight battle against compatriots Marcus Fernaldi Gideon and Kevin Sanjaya Sukamuljo.

[3] In January, Alfian and Ardianto won their first Super 1000 tournament at the Malaysia Open by defeating Chinese pair Liang Weikeng and Wang Chang.

[35] The week after, they bowed out of India Open at the semifinals against Malaysians Aaron Chia and Soh Wooi Yik, leaving Indonesia without any representatives in any finals.

He and Ardianto lost at the quarterfinals against Korean scratch pair Kim Won-ho and Na Sung-seung[38] With the Indonesian federation skipping the German Open, Alfian resumed competition at the All England in March.

[40] In late April, Alfian competed at the Asian Championships in Dubai, United Arab Emirates, but had to lose in the quarter-finals from 8th seed Malaysian pair Ong Yew Sin and Teo Ee Yi.

[44] In the next tour, they competed at the home tournament, Indonesia Open, but lost in the quarter finals from 7th seed and eventual champions Indian pair Satwiksairaj Rankireddy and Chirag Shetty in straight matches.

[45] In July, Alfian competed at the Korea Open, but lost in the final against 3rd seed Indian pair Satwiksairaj Rankireddy and Chirag Shetty for second times in a row.

[47] In early August, Alfian competed at the Australian Open, but had to lose in the quarter-finals from 8th seed Korean pair Kang Min-hyuk and Seo Seung-jae in rubber games.

[49] Made his second appearance at the Asian Games,[50] Alfian failed to bring home any medals after lost in the quarter-finals in both the men's doubles and team events.

[53] It took months to win their second title, where in November they emerged victorous in the Japan Masters beating host pairing Takuro Hoki and Yugo Kobayashi.

[59][60] They manage to recover well in their home ground Indonesia Masters by advancing to the final before losing to Man Wei Chong and Tee Kai Wun with the score 19–21, 11–21.