United Airlines flights on major routes were grounded Wednesday because of a technology issue, and additional flight delays were expected into the evening, the airline said.

United Airlines has grounded flights nationwide on Wednesday night due to an issue with its weight and balance computer system.

United Airlines was forced to issue a ground stop for all flights nationwide due to a technical issue with its weight and balance computer system Wednesday evening. "Due to a technology issue, we are holding United mainline flights at their departure airports,