Flights across the United States were returning to normal today after computer glitches caused disruption at both United Airlines and US Airways over the weekend.

On Friday a five-hour outage forced United to ground 16 flights and around 25 on Saturday, with a similar incident striking at US Airways on Sunday.

In total over 100 flights worldwide were delayed.

As of Sunday afternoon, United did not expect additional delays, a spokesperson said.

“While we will be experiencing some residual effect on our flight operations throughout the weekend, United is committed to restoring normal operations as soon as possible,” said Alexandria Marren, senior vice president system operations control at United Airlines.

“We are reaching out through multiple channels to ask customers who were inconvenienced by this event to contact us.”

US Airways

In a similar incident, US Airways officials confirmed computer systems at its hub at Charlotte Douglas International, North Carolina, crashed for than three hours on Sunday.

Flights were delayed into the evening, even though the system is back up and running.

The airline is warning customers that they may encounter longer lines at the ticket counter and delays of up to an hour.

The outage did not cause any flights to be cancelled.