UFC 331 takes place on Saturday, September 19, 2026, at the Crypto.com Arena in Los Angeles, California. The main event features a flyweight title rematch where champion Joshua Van defends his belt against former titleholder Alexandre Pantoja, following their abbreviated first meeting. The co-main event showcases a pivotal five-round lightweight bout between Arman Tsarukyan and Mauricio Ruffy with potential title implications. The main card also highlights notable matchups like Patricio Pitbull versus Doo Ho Choi and a featherweight clash between Brian Ortega and Renato Moicano.

RUN TIME: 180 min