Flights are returning to normal across the United States Monday after computer outages disrupted both United and US Airways flights over the weekend.

It all started Friday when a computer issue forced United to ground 16 flights. An additional 25 flights were canned by the carrier on Saturday. No additional delays occurred Sunday afternoon according to an airline spokesperson. 

US Airways passengers were also inconvenienced Sunday when a similar computer glitch interrupted flights at Charlotte Douglas International Airport in North Carolina for over three hours. Flights were delayed into late Sunday evening.

US Airways warned passengers to expect longer lines at ticker counters and hour long delays. No flights were cancelled. 

More than 100 flights were delayed over the weekend.