As of June 2, Korean Air has re-launched its nonstop service to Sao Paolo, Brazil, from Los Angeles, according to Travel Weekly. Shortly after Sept. 11, Korean Air discontinued the service.

Flights to Sao Paolo depart Mondays, Wednesdays and Fridays using Boeing 777 planes that have flat sleeper seats in premium classes as well as on-demand movies and music at all seats.

Also this week, American Airlines launched a daily service to Moscow's Domodedovo Airport from Chicago's O'Hare Airport.

American will also use Boeing 777 planes and will have Russian-speaking staff members onboard to assist passengers.