Girl with tickets and smartphone in airport waiting room

United is investing $34 million into Dulles airport for construction of an extension to concourse C to house a new premium Polaris lounge at Dulles, a presentation to the operator’s board shows … “United’s Polaris lounge will serve an important role in improving the customer experience at United’s Dulles hub,” the airline says. The Dulles investment comes as MWAA invests more than $1 billion…