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A potentially historic winter storm hitting the Northeast is causing thousands of flights across the country to be cancelled. To help you navigate through your travel plans, 11Alive's Help Desk is providing major airline information and tips on how to change your reservations.

According to Delta, approximately 740 system cancellations are in place for Friday across many Northeast airports including Delta hubs at LaGuardia Airport andJFK International Airport.

"Delta continues to closely monitor conditions along the storm's projected path," said a representative from Delta Corporate Communications.

Delta Air Lines allows customers to refund a totally unused non-refundable ticket in the event a flight is cancelled due to irregular operations, like weather, when no other alternate flights are acceptable. To change your reservation, call Delta at: (800)-221-1212.

Delta also provides a same-day confirmed option, which allows customers to change their flight time on the same day they're traveling for a fee of $50. To use this option, you must confirm your new flight within 3 hours of the scheduled departure time.

However, if you have a flexible fare like a refundable ticket, you may be able to change your flight without a fee. These rules are subject to change, regardless of the date the ticket is purchased. For more information on this option, contact Delta Reservations.

For those flying on AirTran, customers will be placed on the first available alternate flight in the event of a cancellation due to weather. When flights are cancelled, customers have a few options.

They can either rebook their flight, or request a credit or refund for any unused segment of their flight. No administrative fees will be assessed for these options. To contact AirTran Airways, please call: (800)-247-8726.

If you're traveling through Atlanta, you can always check your flight status on the Hartsfield-Jackson Atlanta International Airport's website.

For more information about major airlines and how to change reservations, please see our resource page.

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