Wine is allowed in checked baggage but not in carry-on bags. Alaska Airlines will accept a case of up to 12 bottles of wine per passenger as checked baggage at no extra charge from customers on flights departing Sonoma County. Many local wineries sell packaging materials for checking or shipping wine.
There is no restriction on the amount of alcohol you may pack in your checked luggage, provided it contains under 24% alcohol by volume (e.g. beer and wine). Alcohol greater than 24% up to and including 70% (140 proof) is allowed with the following restrictions:
Alcohol over 70% (140 proof) is prohibited.
Wine Skins, leakproof packaging for single bottles of wine in checked baggage, are available for purchase in terminal vending machines, online, and in many shops and wineries.