Singapore's flag carrier will fly to Melbourne four times a day instead of three, and to Adelaide 12 times a week instead of 10, the company said in an emailed statement. This will raise its weekly flights to Australia to 121.Qantas Airways Ltd. previously said it will increase its number of Australia-Singapore flights, after announcing its intention to use Dubai instead of Singapore as its hub for the "Kangaroo" route connecting Australia and Europe.Singapore Airlines will increase the frequency of flights to the Japanese cities of Fukuoka and Osaka, and fly the Singapore-Moscow-Houston route daily from May 20 to Aug. 11, the carrier said, announcing its northern summer schedule.It also said its non-stop service to Los Angeles will end Oct. 20, and a similar service to Newark will end Nov. 23. It had earlier announced it would cease operating what currently are the longest flights in the world due to soaring fuel costs.Singapore Airlines is returning the four-engine Airbus A340 jets that it uses for all business class flights to Los Angeles and Newark in a deal with the manufacturer to buy newer planes. The plane burns huge amounts of fuel to carry the weight of the fuel needed for the 18.5 hour flight to Newark and 16 hours to Los Angeles.Typically, non-stop flights above 15 hours become uneconomical because of the sheer weight of the fuel needed. Airlines refer to it as carrying fuel to carry fuel.
