Winter storm Jonas has had a devastating effect on air travel in the northeastern US.
More than 12,000 flights have been canceled since Friday.
According to Flightaware, more than 3,000 flights were canceled Friday, 4,500 on Saturday and another 3,500 on Sunday.
Furthermore, nearly 1,500 flight have already been canceled today.
Normally, the airspace between Washington, DC, and New York City is some of the busiest in the world.
Over the weekend, the historic winter storm transformed the region into a ghost town.
Seven major airports serving D.C., Baltimore, Philadelphia and New York were all but shut down.
In a screenshot from the Flightradar24, the airspace above the region shows virtually no activity.
All major airlines operating in the US temporarily shuttered their operations between D.C and New York during the storm.
The few aircraft that are in the area are inbound flights from other parts of the US and Canada.
However, by Monday morning, things were beginning to return to normal as air travel around the region resumed service. However, it will be well into the week before the airlines are able to get back to business as usual.
Saturday 23 January
Thus far today, according to Flightaware, Newark Liberty International has reported more than 250 flight cancellations while LaGuardia has reported more than 150 cancellations. Reagan National and Washington Dulles have each reported more than 100 cancellations Monday morning.
JFK International and Baltimore-Washington International have reported less than 50 cancellations each. Philadelphia International is reporting around 75 flight cancellations.
Monday 25 January