Old Jun 14, 18, 2:37 pm
  #3  
mnbp
 
Join Date: Nov 2009
Programs: DL PM 1MM
Posts: 2,921
Originally Posted by NHFL9 View Post
You may want to consider opening a FlyingBlue account or something like that and having them add that number to the reservations you don't want to earn DL miles on. As long as your known traveler number stays in the record you should keep PreCheck. I think this is totally fine, you can choose what program you want to earn miles in for a given flight.
A KTN has nothing to do with a FF number.
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