More than 600 flights are canceled and nearly 2,000 running late as a winter storm sweeps across the Northeast.
Adding to travelers' woes: United Airlines is experiencing problems with its passenger-service computer system.
By midday Tuesday, 350 United flights had been delayed, according to tracking service FlightAware.com. It wasn't clear how many were due to the computer outage. United didn't immediately provide details.
Snow and ice are snarling air traffic in the Northeast. At midday, more than 100 departures have been canceled at Newark Liberty Airport in New Jersey and dozens more at New York's LaGuardia Airport and in Philadelphia.
Several storms have slammed travelers this winter. Airlines have canceled more than 75,000 domestic flights since Dec. 1, the most since the government started keeping records in winter 1987-1988.
- Why Utahns are some of the biggest spenders,...
- Rubber chickens, afros and clowns: A look at...
- 10 Things to See: A week of top AP photos
- 35 arrested in Oakland after protest march
- These two things are helping California's...
- Ferguson protesters across US peaceful,...
- Steven Powell ordered to serve more jail time...
- In Britain, US turkey dinner is big for business
- As Ferguson verdict is read, protesters... 70
- Grand jury won't indict Ferguson cop in... 30
- Obama: Americans want 'new car smell'... 29
- Ferguson businesses torched in... 17
- Under pressure, Hagel steps down as... 15
- Obama immigration plan good, not great... 13
- Obama heads to Chicago to pitch... 13
- Why Utahns are some of the biggest... 12