Icelandair starting in summer 2015 will expand starting with REF - PDX route, from 5/19/15 2x weekly utlizing a 757-200.
#665 KEF 5:15pm – 6:15pm PDX
#664 PDX 3:40pm – 6:15am +1KEF

Also increases..
REF– EWR 6/5/15 – 9/15/15 Increase from 4 to 6x weekly
REF– YYZ 5/14/15 – 9/28/15 Increase from 7 to 11x weekly
REF– IAD 5/17/15 – 9/27/15 Increase from 7 to 10x weekly