TSA precheck question

[rich1954]

I just applied for TSA precheck and have my appointment in 3 weeks. I have a few flights booked over the next 6 months and was wondering once approved for precheck how do I prove it at security?

[dfwskier]

After you get your TSA known traveler number, enter it into  my account (for Southwest, and whatever profiles you have with other airlines. Even though you booked flights first, the PRE designation will appear on boarding passes printed after you enter the known traveler number.

[rich1954]

Just looked at my profile and don't see where TSA info would be entered.

[dfwskier · Accepted solution]

Go to my account

click on profile details (immediately above upcoming trips)

edit travel related info to add  known traveler number 

opt in to TSA pre check