A United Airlines flight from San Francisco to Chicago landed in Denver early Monday morning, after a passenger became aggressive with a flight attendant, the airline said in a statement. United ...

The airline has said it will build a new flight center to supplement its main training facility in northeast Denver, but has remained mum on the entirety of its plans.

With a hub at San Francisco International, United Airlines offers service to scores of cities — but do you know which of its SFO routes are the busiest? Simple Flying decided to find out by ...