Business class Stockholm to Chicgao 777€ with Icelandair, 1 stop in KEF. Even though Icelandair offer not the best business class product, this fare is cheaper as a premium economy class ticket, and you have free stopover in Iceland (177hrs).
Flights available the whole year.
1 STOPOVER PERMITTED IN EACH DIRECTION IN REK. A STOPOVER MAY NOT EXCEED 177 HOURS.