Hong Kong, Jan. 13 -- Asiana Airlines is making every seat on three return flights between Seoul Incheon and London Heathrow, Prague and Sydney across February and March available for booking with frequent flyer miles. Read More The first of these mileage flights takes off on February 20 on the Incheon-Heathrow route and concludes with a March 25 service from Sydney to Incheon. The three Heathrow and three Prague return services will be operated by an 311-seat A350-900s, while the three Sydney return services will be flown by 495-seat A380s. The Star Alliance member has launched mileage flights on domestic services to Jeju, as well as on international routes to North America, Europe and South East Asia. Sydney is the first destination in As...