Originally Posted by kop84

Between HND being partly opened to US carriers, the proliferation of Asian carriers flying to the US, longer range aircraft, no Japanese partner, the population of Japan is also upside down with more old people than young people all were straws that broke NRT's back for DL.
DL might one day return to SIN and some of the other markets it's left, but just look at TPAC fares. This is still summer travel and tickets can be had to Asia for less than $800 from all over the US to a ton of Asian cities with less than 7 days advanced purchase. If there is any margin to be made it's razor thin and DL can likely deploy the wide-body and crew on a more profitable route elsewhere.