Some regions, like the Schengen Area , generally require only three months of validity beyond your planned departure date. Permanent Residency (Immigration)
The U.S. has agreements with over 100 countries (the " Six-Month Club ") that waive this requirement. For citizens of these countries, a passport only needs to be valid for the duration of their intended stay. 6 Month Rule
Many countries require your passport to be valid for at least . If your passport expires sooner than this window, you may be denied boarding by your airline or entry by border officials. Some regions, like the Schengen Area , generally
Airlines often enforce this rule strictly because they can be fined for transporting passengers who do not meet entry criteria. For citizens of these countries, a passport only
For U.S. Lawful Permanent Residents (Green Card holders), the "6 month rule" refers to travel outside the United States.
Six-Month Validity Update - U.S. Customs and Border Protection