Recreational Marijuana States. Four states, including Alaska, Oregon, Colorado, and Washington, as well as Washington D.C. have passed ballots legalizing recreational marijuana. The amount you can possess at one time, however, varies between the states.
As of January 31, 2014, passengers traveling internationally into the U.S. and connecting to another flight are allowed to have in their carry-on baggage liquids in excess of 3.4 ounces (100 mL) that were purchased as duty-free merchandise.
The TSA has very clearly defined rules when it comes to the transporting of alcohol on a flight. If the alcohol content is greater than 70 percent (140 proof) then it is not allowed on the plane at all. If it is between 24 percent and 70 percent, you are allowed to pack five liters worth of alcohol in your checked bag. Mini bottles are usually 1.7 ounces, and you are allowed to carry those on the plane so long as they are all in one quart-size zip top bag.