NASHVILLE, Tenn. (WKRN) — As winter weather ramps up across the country, a handful of airports are feeling the effects.

Rain in Seattle, snow in the Midwest, and a wintery mix has canceled more than 3,700 flights within, into or out of the United States Thursday.

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However, as snow moves through Tennessee, the Nashville International Airport (BNA) reported two dozen flights had been canceled before 4 a.m. Thursday. By 8 a.m., over 50 departures had been canceled — 42 of those were Southwest Airlines flights.

When it comes to arrivals at BNA, more than 50 arrivals were canceled before 8 a.m., which had continuously increased throughout Thursday morning.

Passengers are urged to check in with their airline ahead of their scheduled flight.