The Keeping Up With The Kardashians star was pictured with the rapper at Los Angeles International Airport on Monday evening (22 June).
Kylie, 17, appeared a little camera shy as she held her hand up to her face while walking through the terminal to catch her flight.
Her 25-year-old beau walked behind her.
While Kylie hasn't spoken publicly about Tyga yet, he has been seen hanging out with the Kardashian-Jenner clan on many occasions, suggesting he's been welcomed into the family with open arms.
He took his young son to Kim Kardashian's daughter North's birthday celebrations at Disneyland last week, and was also seen with the family at a church service over Easter.
Tyga recently spoke out to deny his new song 'Pleazer' was about the teenage reality star, after fans clocked references to 'Kardashian p***y' and 'getting a felony'.
He tweeted: "If I were to make a song about @kyliejenner it would be way more special & classier."
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