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The One Exception For Boarding A Plane With Bourbon In Checked Luggage
You can fly with bourbon in your luggage as long as certain restrictions are followed — and one important exception: you can't fly with high-proof bourbon (over 70% ABV).
These high-proof bourbons are considered highly flammable and a hazardous material. In bourbon circles, they are, not surprisingly, called "hazmat bottles."
Bottles of bourbon between 24% and 70% ABV have a limit of up to five liters total per person. Furthermore, those bottles "must be in unopened retail packagings," per the FAA.
If you are looking to travel with any hazmat bottles, you'll instead have to ship it instead or enjoy your bourbon where you found it.