Travelers who want to make a one-time change to their flight plans can switch to different flights by Dec. 11.
The airline is also advising travelers to check their flight status frequently and sign up for mobile or e-mail flight notifications.
Those who want to cancel their trips due to a flight cancellation or delay of 90 minutes or more can get a refund for the unused portion of their ticket.
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AJC weather page Delta passengers who are scheduled to fly Friday and want to change their flight plans can make a change without paying a change fee, as the threat of snow looms.