Originally Posted by
Guppydriver95
It’s the 2 letter code for the Denver training center. There’s lots of theories about how “TK” was chosen, but I’ve never heard anything other than speculation. Since the merger, it’s no longer “officially” TK, but at United, it’ll always be TK, just as the 737 will always be the Guppy.
Someone posted on another thread that “TK” stands for “ticketing”, because that’s what the site was used for long ago.
