United acknowledged at least 200 delayed flights during its computer glitch that it suffered Tuesday.
Its passenger reservation system and website stopped working for about two-and-a-half hours on Tuesday afternoon, although the precise cause wasn’t known. The outage didn’t affect planes in flight. Passengers in several United hubs reported very long lines at ticket counters. During the outage it stopped sending planes to its hubs in Newark, N.J., and San Francisco. United said it would not charge the usual change fees for passengers on affected flights who chose to cancel or rebook their tickets. It apologized for the disruption.