In advance of wintry weather hitting the Southeast, Delta Air Lines is allowing customers who could be affected to change their flight plans.

Delta is waiving certain change fees for travelers scheduled to fly to, from or through Atlanta, Asheville, Birmingham, Chattanooga, Huntsville, Knoxville, Memphis, Nashville or Tri-Cities, Tenn. on Monday or Tuesday.

Those whose flights are cancelled or significantly delayed are entitled to a refund, according to Delta.