It's your trip (literally
) but food for thought
2 segment path:
HEL DFW 313°(NW)303°(NW)5,224 mi DFW ANC 326°(NW)323°(NW)3,043 mi 8,267 mi
2 segment path:HEL LAX 330°(NW)320°(NW)5,614 mi LAX ANC 333°(NW)321°(NW)2,345 mi 7,960 mi
2 segment path:HEL JFK 299°(NW)290°(W)4,117 mi JFK ANC 322°(NW)334°(NW)3,386 mi 7,502 mi
2 segment path:HEL KEF 300°(NW)290°(W)1,524 mi KEF ANC 329°(NW)342°(N)3,383 mi 4,908 mi
http://www.gcmap.com/mapui?P=hel-dfw...A&MS=wls&DU=mi
All options have AY reward first leg and partner reward/cash second legs.