The reservation system and website for United Airlines failed Tuesday afternoon, delaying takeoffs and preventing some passengers from checking in at airport.
[Updated 3:30 p.m., Aug. 28: Shortly after 3 p.m., United issued a statement saying it was "in the process of resuming normal operations following a temporary network outage that affected its airports and website."]
The airline confirmed a problem with its system but did not offer details.
"A network outage is affecting our airport and united.com functions," airline spokeswoman Mary Ryan said in a statement. "We are working to resolve the issue and minimize any impact to our operations."
The system problems, according to the airline tracking site Flightaware.com, has blocked automated check-ins at airports and delayed some flights. United's website is also offline.