Yes, you can take a flask in your carry-on, but there are restrictions based on its contents, specifically the alcohol content.
Here's a breakdown:
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Empty Flask: An empty flask is generally allowed in carry-on baggage without any restrictions.
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Flask with Alcohol (Less than 24% ABV): Alcohol with less than 24% alcohol by volume (ABV), such as most beers and wines, is permitted in carry-on luggage. However, you are limited to containers that are 3.4 ounces (100 milliliters) or less per item. These containers must fit comfortably in one quart-sized, clear, zip-top bag.
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Flask with Alcohol (24-70% ABV): Alcoholic beverages with more than 24% but not more than 70% alcohol by volume are limited to 5 liters per passenger for checked baggage. You cannot bring alcohol in this range in your carry-on except if purchased in duty-free and comply with liquid restrictions.
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Alcohol Over 70% ABV: Alcoholic beverages with more than 70% alcohol by volume (140 proof) are prohibited in both carry-on and checked baggage.
Summary Table:
| Alcohol Content (ABV) | Allowed in Carry-On? | Restrictions |
|---|---|---|
| Empty Flask | Yes | None |
| Less than 24% | Yes | Containers of 3.4 oz (100 ml) or less; all containers must fit in a quart-sized bag |
| 24% - 70% | Generally No (Unless purchased duty-free) | Restrictions apply; typically only allowed in checked baggage. |
| Over 70% | No | Prohibited in both carry-on and checked baggage. |
Important Considerations:
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TSA Regulations: Always refer to the Transportation Security Administration (TSA) website (https://www.tsa.gov/) for the most up-to-date regulations and any potential changes.
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Duty-Free Purchases: Alcohol purchased duty-free after security checks may be allowed in carry-on, subject to certain conditions (e.g., sealed tamper-evident bags). Check with your airline and airport for specific rules.
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International Flights: International flights might have different regulations. Be sure to verify the rules of both your origin and destination countries.
In conclusion, while bringing a flask on a plane is possible, the feasibility depends on the alcohol content. Make sure to comply with TSA guidelines to avoid any travel disruptions.
