Old Feb 16, 17, 9:57 pm
  #7  
javabytes
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Join Date: Apr 2009
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Note: Award Tickets and mileage upgrades must be canceled at least 72 hours prior to originating flight departure time to redeposit the miles.
http://www.delta.com/content/www/en_US/skymiles/use-miles/award-travel/award-service-fees.html
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