(Reuters) -Wizz Air on Thursday forecast a low-single-digit decline in full-year revenue and said winter capacity was a "short-term challenge", even as its first-half operating profit jumped almost 26% to 439.2 million euros  ($512.20 million).

($1 = 0.8575 euros)

(Reporting by Yamini Kalia and Shashwat Awasthi in Bengaluru; Editing by Sumana Nandy)