A distinct cultivar of Anthurium plant named `Red Flare`, characterized by its upright and outwardly spreading plant habit; freely clumping growth habit; strong roots; large and durable dark green leaves that are elongated cordate in shape; spathes that are positioned upright and beyond the foliage on strong and erect scapes; large, durable, glossy bright red spathes; year-round continuous flowering; good flowering performance under low light condition; resistance to Xanthomonas and Colletotrichum; tolerance to low and high temperatures; and good post-production longevity.