Airline stocks are trading higher after the Centers for Disease Control and Prevention eased their travel recommendations for 61 countries, including Japan, France, South Africa, Canada, Spain and Italy. United Airlines climbed over 1%, while Delta jumped 2.5%.

Shares of Boeing are higher after Southwest Airlines said they are increasing their orders for the smallest 737 Max model by nearly three dozen planes amid an improvement in travel demand.

U.S. job openings surged by nearly one million to a new record high in April, while more people voluntarily left their employment, strengthening the view that a recent moderation in job growth was due to supply constraints.  Job openings, a measure of labor demand, increased by 998,000 to 9.3 million on the last day of April, the highest level since they began tracking the data in December 2000.

U.S. small-business confidence edged lower last month, the first decline in four months, as a nationwide labor shortage and inflation worries weighed on business owners' economic outlook.