In the United States, you need a valid U.S. government-issued photo ID or a passport from your country of origin to travel through security. You must show that the name on your boarding pass matches the legal name on your unexpired government-issued ID.

For 2026 travel, the requirements depend on your destination and nationality. For US Domestic flights, you now strictly need a REAL ID-compliant license or a passport; the "grace period" for non-compliant IDs has ended. For International flights, you must have a passport valid for at least six months beyond your stay. A supportive peer "digital" tip: many countries now require an Electronic Travel Authorization (eTA), such as the EU's ETIAS system or the UK's ETA, which must be applied for online days before your flight. You should also carry a printed or digital copy of your return ticket and proof of sufficient funds, as immigration officers in 2026 are increasingly asking for these. If you are traveling with a minor and only one parent is present, a notarized "Consent to Travel" letter is highly recommended to avoid kidnapping-prevention delays at border control.