American Airlines grounded flights across the country Tuesday because of an outage of its main reservations system. Thousands of passengers were stranded at airports and on airplanes.
A spokesman for the Federal Aviation Administration said American asked to halt its flights until 5 p.m. EDT.
Flights into American’s five biggest cities — New York, Dallas, Los Angeles, Chicago and Miami — are stopped until 5:30 p.m. EDT.
“Any American plane sitting on the ground anywhere in the U.S.” won’t be taking off, said FAA spokesman Lynn Lunsford.
Flight-tracking service FlightAware estimated that about 900 flights would be delayed if American resumed flying at 5 p.m., and the cascading effect would cause another 800 delays Tuesday evening because planes and crews wouldn’t be where they were needed.