1. Can I pack liquids in my checked bag? Yes, liquids in containers larger than 3.4 ounces must be packed in checked luggage. There is no limit to the amount of non-alcoholic liquid that can be brought, but too many full-size bottles can exceed the maximum weight limit for your luggage.

In your checked suitcase (not your carry-on), there is virtually no limit on standard non-hazardous liquids like water, juice, or shampoo for international travel. You can pack as many full-sized bottles as you like, provided you stay within the airline's total weight limit (usually 23kg or 50lbs). However, for alcoholic beverages, there are specific rules: you can typically pack up to 5 liters of alcohol between 24% and 70% ABV (48–140 proof) in your checked bag. Anything over 70% ABV is strictly prohibited. For toiletries and perfumes in aerosol form, there is usually a limit of 2 kg (70 oz) total across all containers, with no single container exceeding 0.5 kg (18 oz). It is also important to remember that while the airline might let you pack 10 liters of wine, Customs in your destination country will likely charge you duty if you exceed their personal allowance (usually 1–2 liters). Always double-bag liquids to avoid a messy "shampoo explosion" caused by cargo hold pressure changes.