Delta is tracking a weather system moving through the Northeast that may affect operations through the weekend, according to the airline's team of meteorologists.

Heavy rain is expected to begin in the Washington, D.C., area Thursday morning, forecasted to move to the New York City area by 6 p.m. ET. Winds, gusty at times, will be the biggest factor for New York area airports, which is expected to strengthen Thursday evening and overnight.

A winter weather waiver has been issued for cities including Boston; Hartford; New York-JFK; New York-LGA; Newark; Newburgh, N.Y.; Philadelphia; Providence, R.I.; and  White Plains, N.Y., to allow customers to make a one-time change to their travel plans without incurring a fee.

Meanwhile, airports in Western Europe are also expecting a winter weather system, with Dublin expecting 3 to 5 inches of snow, up to 2 to 3 inches in London, and up to 3 inches in Paris. Customers flying to Ireland, the United Kingdom, Italy and Amsterdam can again take advantage of Delta's weather waiver.

Customers are encouraged to check Delta.com or the Fly Delta mobile app for the most up-to-date flight status information.