Originally Posted by
bocastephen
I've started buying refundable tickets on DL to get access to Precheck where DL is the only checkpoint (by terminal) with the feature - works great at FLL when flying Air Canada. Saves time and simplifies screening.
I once did the same to get lounge access w/ my Plat Amex when flying on United. The possibility for a screw up makes me nervous though (accidentally buying a non-refundable ticket or something).