FlyerTalk Forums - View Single Post - Why does Delta have a specific fare class showing as available but I can't book it?
Old Sep 26, 2011 | 10:23 pm
  #2  
3Cforme
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Join Date: Jun 2001
Programs: DL 1 million, AA 1 mil, HH lapsed Diamond, Marriott Plat
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It's possible your itinerary doesn't meet the rules for I or S fares even though the segments may show available inventory.
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