Here is the
earlier thread.
Here is my post from that thread, updated with current offerings:
Current snack services:
Short Haul - Peanuts/Pretzels
Medium Haul AM - Belvita (transition to Brown Sugar Belvita this month)
Medium Haul PM - Regular Wheat Thins (transition to Ritz snack mix this month)
Long Haul - Lorna Doones / Fritos / Ritz with Cream Cheese (transition to Cinnamon Airplane Cookies / Fritos / Wheat Ritz with White Cheddar this month)
On medium haul flights, standard service is peanuts plus the AM/PM snack. If you'd like pretzels, you just need to request them.
Service levels (miles):
Short > 0-750
Medium > 751-1500
Long > 1500+
Snack services are all distance based, not time based.