The 3-1-1 rule is in effect at many international airports. Every liquid, gel or aerosol item must be 3 ounces or less; and every person is allowed one quart-sized clear plastic bag in which to place the items for inspection. If you plan on traveling with hand sanitizer on your airline, consider the rule before packing.
You are expected to refrain from disruptive behavior on any flight. Verbal or physical threats, intimidation or assault are not tolerated aboard the aircraft. If you cause such a disruption on an international flight, authorities can prosecute you upon landing.
As of December 2009, the Transportation Security Administration has increased security on international flights that are landing in the United States. Some airlines require overhead baggage to remain stored while traveling; additionally, restrictions on electronic devices may be enforced.
