Millions of people in New York City and a large swath of the northeastern U.S. were stuck at home under road travel bans and blizzard warnings Monday as a fierce winter storm barreled into the densely populated region with heavy snowfall and high winds.

Airports in Washington, D.C., and along the Northeastern corridor led the list of flight cancellations today as a major winter storm and blizzard hit the region. There were 5,685 flights within, into or out of the United States today that were canceled, according to tracking website FlightAware.

A state of emergency and a travel ban were declared ahead of the powerful nor'easter storm.

Neighbors, government workers and a powerful railroad snow-clearing machine nicknamed “Darth Vader” are scrambling to dig out the northeastern United States from a brutal snow storm.

The storm in late January was bad enough. This one is bringing true blizzard conditions, and the city has stepped up its response.

It comes as cities and towns across the U.S. east coast brace for a major late-winter storm.

Airlines have canceled more than 3,000 flights ahead of the massive winter storm, reports ABC News' Sam Sweeney.

New York Mayor Zohran Mamdani announced a citywide travel ban for all non‑essential vehicles.

Blizzard warnings extended from Maryland to Maine as New Yorkers received urgent cellphone alerts Sunday night announcing a ban on non-emergency travel on all streets through noon Monday due to “dangerous blizzard conditions.

The NYC area is bracing for a major winter storm that's set to hit the region with heavy snow on top of dangerous, subfreezing weather.

New York City officials have warned the storm could rank among the city's worst in 150 years as several states across the US declared states of emergency. Follow for the latest updates.