Question: are small bottles of liquor allowed on planes?
Answer: Travelers may carry as many 3.4 ounce bottles of liquid (mini bottles of liquor are 1.7 ounces) that fit comfortably in one, quart sized, clear plastic, zip-top bag. ... One bag is permitted per passenger. That's potentially useful if you've got a bagful of tiny airplane-sized bottles, but that's probably unlikely.