Originally Posted by
Ace Cdn
I couldn't see anywhere to put it on your profile or during the booking process so for now I am guessing it's just when you are checking in when you need to enter it.
To clarify for everyone who may be wondering, the option to add your known traveller number is not currently offered during the booking process on westjet.com, in your WestJet profile or in the manage bookings section. Some 3rd party sites do have the option to add it during the booking process.
When you are checking in via a laptop, mobile device or our app, you can enter your known traveller number there and TSA Precheck info will be added to your boarding pass.