A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
IME PDX is the easiest route for BE/D1 award space and instrument supported upgrades.
LAX-HND is also easy, but transferring between HND and NRT is a pain unless you want to spend some hours in Tokyo and can figure out what to do with all of your luggage while you're exploring.