The US weather map TODAY shows a powerful winter in the Great Lakes on Saturday, January 19, 2019. (Photo: USA Today Weather)

Last update: 9:30 a.m. ET. Next update: at 12:30 p.m. ET

The headaches from the flight increased on Saturday when a powerful winter storm moved from the Midwest to the northeast.

Airline cancellations were accumulating, and some flights on Monday were no longer available. In total, more than 2,400 flights were canceled from Friday to Monday. That number would probably increase as the storm moved toward the northeast. All the major US airlines UU They were exempt from paying for changes at many airports in the path of the storm.

By Saturday, more than 1,135 flights were canceled across the country and another 537 were delayed at 9:30 a.m. ET, According to FlightAware flight tracking service.

Even by Sunday, airlines had already pre-emptively canceled more than 785 flights in anticipation of bad weather. Even Monday's flights were affected, with more than three dozen already canceled. Those totals exceeded 520 cancellations mostly related to the storm on Friday.

The storm, called Winter Storm Harper by The Weather Channel, was throwing snow, ice and rain across the Great Lake and the Ohio Valley on Saturday morning. At night, it was predicted that the bad conditions would expand towards the Mid-Atlantic and the Northeast.

The most hit airport on Saturday was Chicago O'Hare, where a total of 450 departures and arrivals were withdrawn at 9:30 a.m. ET. That accounted for about 20 percent of all-day programming there, according to the FlightAware count.

Saturday's flight problems were widespread. Among the dozens of airports in which FlightAware showed significant cancellations are New York JFK, New York Guard, Newark Liberty, Chicago Midway, Boston, Indianapolis, Washington Reagan National, Baltimore / Washington, Buffalo and Cleveland.

Looking to Sunday, Boston had the most preventative cancellations, with more than 400 combined departures and arrivals that were already outside the established schedule. That represented about half of the full Sunday schedule in Boston, according to FlightAware. The New York JFK had approximately 100 combined arrival and departure cancellations for Sunday.

Many of them came to JetBlue, which has Boston and JFK as its two busiest centers. JetBlue had already canceled around 430 for Sunday and another 37 for Monday, FlightAware showed.

Flyers on all airlines must prepare for an increase in cancellations and delays until at least Monday. Using previous storms as a criterion, flight cancellations are likely to continue increasing early next week if current forecasts are maintained.

Flight delays could last even after the storm. The intense cold is expected to affect the Midwest and Northeast as a result of the storm, which provides the possibility of de-icing delays at busy airports that could last at least until Monday.

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