I think they had a hard time competing for F and C class passengers plus they didn't have enough feeding traffic in PDX or LAX. I also think that a lot of passengers, particualary in Asia, don't like M11s. I don't see DL going back to those cities unless they get more 777s and decide to have more flights to the US west coast. They have around fifty flights to LAX and PDX could also use a better feed.Maybe they should have more flights to/from either PDX or SLC so they would have a real west coast hub?
Boeing 777s flown: UA, TG, KE, BA, CX, NH, JD, JL, CZ, SQ, EK, NG, CO, AF, SV, KU, DL, AA, MH, OZ, CA, MS, SU, LY, RG, PE, AZ, KL, VN, PK, EY, NZ, AM, BR, AC, DT, UU, OS, AI, 9W, KQ, QR, VA, JJ, ET, TK, PR, BG, T5, CI, MU and LX.. Further to fly.. LH 777