Originally Posted by ChamplinAl

DL can only do sooo much with the 4 339's they are receiving in 2019, some of the TPAC routes will need to wait until 2020 when more arrive. SEA-NRT gets one of the 339's (which barely is able to do it daily with one A/C). SEA-ICN and SEA-PVG aren't quite so lucky as the longer distance between the city pairs will need the remaining 3 A/C to cover the daily round trips. I'm sure that Delta will place priority on the SEA-PEK in early 2020. The next on the list (speculation) might then be the PDX-NRT pair - which then leaves the remaining Pacific B767-300ER routes staying on one side of the Pacific (which kinda doesn't work either as DL needs the continuation of those A/C moving around DL's system).