LONDON—Central and Eastern European LCC Wizz Air is expecting to grow to a 300-aircraft fleet within the next 10 years, tripling its current size. Wizz currently operates 96 Airbus A320 and A321s, with the 100th slated to arrive in June. “We think we will be at 300 aircraft less than a decade from now,” Wizz Air CEO József Váradi said during a recent media dinner here. Váradi also expects the airline to grow from carrying 30 million annual passengers ...