Starting early Wednesday, United customers won't be able to book flights and access other services as the airline upgrades its reservation system.

Almost a year ago, the federal government began investigating airline-owned travel Web site Orbitz LLC for alleged anticompetitive activities. Now, an Orbitz-commissioned study seeks to defang the ...

In the past, it would often take an hour for a travel agent and airline representative to reserve a seat on an airplane due to paperwork and manual labor. Thankfully, those days are long gone. Airline ...