Brad Pitt & Angelina Jolie -- Not Too Fancy for a Subway Ride (PHOTO)

Brad Pitt and Angelina Jolie have money to burn, but the mega superstars still eat fresh on a budget ... hitting up a Subway to take advantage of the $6 menu.

We're told Brad, Angie and a few of their SIX kids cruised into the sandwich shop in Glendale, CA over the weekend. If you're wondering what it takes to feed a crew that size -- 2 Meatball Marinara footlongs, 1 Chicken Teriyaki sandwich, and a few kids' meals.

Total tab ... $44, and Pitt made the sandwich artist's day with a hefty $6 tip! Kinda unheard of at Subway.

First, it was coach flights ... now Subway? Look out for Maddox and Pax on an MTA bus near you.