Trip To China UAJ CZJ

Introduction: Back in June, I saw some really cheap tickets to China in October on UA website. The roundtrip ticket was around $800 all included. I quickly booked a EWR-NRT-PEK and CTU-SFO-EWR on united.com without even requesting vacation days at work. Given the cheap Y fare, I was willing to use miles+copay to upgrade both…