The airports (71) that I have been through on NW are ams,anc,atl,aus,bdl, bna,bos,bwi,cle,clt,cmh,cvg,dca,dfw,dtw,ewr,fai,fa r,fll,fnt,gmp,gso,hnd,hou, hpn,iah,icn,ict,ind,jfk,las,lax,lex,lga,mbs,mco,md w,mem,mia,mke,mob,msp,msy,myr,nrt,okc,ont,phx,ord, orf,phl,pit,pus,rdu,rno,san,sdf,sea,sfo,sjc,smf,sn a,stl,swf,tol,tpa,tri,tys,yow and yvr. Of these, gmp and hnd are no longer served by NW since they are domestic airports for Korea and Japan, respectively. There are others I've been through, such as cic,lgb,oak,hou,chs,tvl,sjd,zrh, eyw, but I didn't fly NW into them. If I count the partner airlines then I should add sjd, zrh and eyw back in.

HJ