United will become the only U.S. airline to offer flights to Bangkok, Thailand and Ho Chi Minh City, Vietnam; daily service launches this October from Hong Kong with one-stop connections from Los Angeles and San FranciscoUnited will offer the first nonstop service to Adelaide, Australia from the U.S.; the three-times weekly flights begin in December from San FranciscoThe airline also adds a second daily flight between San Francisco and Manila starting in October, giving customers daytime and evening travel ...