Kevin Costner -- Bringing Baggage to Whitney Houston's Funeral

Kevin Costner had his hands full at LAX moments ago, where he's set to board a plane bound for Whitney Houston's "Home Going" ceremony in Jersey -- grabbing his wife with one hand, and a trolley bag with the other.

As TMZ previously reported, Whitney's funeral is expected to be star-studded -- with invites like Oprah, Stevie Wonder, and Aretha Franklin.

Mel Gibson was invited, but is unable to attend.