It depends on how big of a flask you have.
I don't know, how many ounces is your flask? Seriously though, flasks can come in different sizes, so your question is not specific enough.
how many ounces in a flask?
8 fluid oz = 1 cup 16 fluid oz = 2 cups
74.39 oz
8 fluid ounces
1 Imperial fluid oz is 28.4131 mL 1 US fluid oz is 29.5735 mL
0.14 fluid oz = 4.14mL (rounded from 4.140294mL).
There are different flasks of many sizes
One.
One.
64
88 oz.
8 fluid oz = 1 cup 16 fluid oz = 2 cups
38.4 oz.
40.57 oz
1 ounce
74.39 oz
16 fluid oz.
8 fluid oz = 1 cup 6.5 fluid oz = 0.8125 cup