It's ON! Kylie Jenner and Travis Scott are on their way to Italy to tie the knot!

Apparently Travis finally figured out a "fire way" to propose and apparently his baby mama said yes! Of course this is no surprise, as it was just a matter of time before these two finally made it official and it seems like they're kinda in a rush to do it so they can have their second baby as a married couple!

Kylie and Travis boarded a private jet Tuesday from Van Nuys airport with friends and family -- daughter Stormi, her mom Kris Jenner, Scott Disick Sofia Richie, and some pals ... en route to Italy where the makeup mogul billionaire has a yacht waiting for her on which she'll not only celebrate her 22nd birthday Aug. 10 but where she'll marry the Astroworld rapper and become a wife!


Check out the the $1.2M/week yacht Tranquility that will carry Kylie and her crew (it has a capacity of 22 guests and an actual crew of 29!). This is gonna be the most INSANE birthday she's had yet and it started with Trav flooding the couple's Calabasas mansion foyer with red rose petals the other day. Check out Ky's Instagram (and baby Stormi in the background!) of his crazy surprise.

BTW, all the EXCLUSIVE pix of Kylie, Travis and friends at the airport -- and Kylie's wedding dress -- coming soon!