While mini bottles of alcohol in your carry-on are fine if they fit into your quart-sized bag, that absinthe you got in Amsterdam won’t be allowed anywhere on the aircraft — and that includes your checked luggage!
The Federal Aviation Administration bans strong alcohol over 140 proof, or 70% alcohol by volume (ABV), from both checked and carry-on bags.
Alcohol with over 24% but no more than 70% ABV has its own limitations, too. You’re prohibited from carrying over 5 liters, or 1.3 gallons per passenger in your checked bag — and it must be unopened and in its original retail container.
There are no limitations placed on alcohol under 24% ABV in checked luggage, just as long as you don't count hefty overweight baggage fees when your suitcase gets weighed in!