Can a US citizen fly without a passport?

Air Travel: U.S. citizens (including infants and children) departing from or entering the United States by air are required to present a valid U.S. passport to board an international flight. U.S. citizens departing from a designated Canadian airport can use their NEXUS Card for entry when utilizing a NEXUS kiosk.



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U.S. nationals, including U.S. dual nationals, must use a U.S. passport to enter and leave the United States. U.S. dual nationals may also be required by the country of their foreign nationality to use that country's passport to enter and leave that country.

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Entry, Exit and Visa Requirements A valid passport book is required to enter Mexico by air, and those attempting to enter at an airport with a U.S. passport card only may be denied admission.

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U.S. Passport. Trusted Traveler Program card (NEXUS, SENTRI or FAST) (see below) U.S. Military identification card when traveling on official orders, or. U.S. Merchant Mariner document when traveling in conjunction with official maritime business.

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At a Glance: Yes, you need a passport to go to Cancun, Mexico from the United States. When traveling by air, a valid passport is required, along with a completed Multiple Migratory Form (FMM).

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The most likely scenario is that you will be prevented from boarding transport by the staff on duty. If you managed to avoid that situation, you could be blocked from entering your destination by border authorities upon arrival. Generally, it is necessary to have a valid passport if you want to travel abroad.

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There are no penalties. The customs officials might be furious but the only thing they can do is confirm you're citizen and let you back in. As for leaving the US, the US doesn't have exit checkpoints so you can leave on any passport.

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Identification
  • Driver's licenses or other state photo identity cards issued by Department of Motor Vehicles (or equivalent) ...
  • U.S. passport.
  • U.S. passport card.
  • DHS trusted traveler cards (Global Entry, NEXUS, SENTRI, FAST)
  • U.S. Department of Defense ID, including IDs issued to dependents.
  • Permanent resident card.


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U.S. citizens are generally required to present a valid U.S. passport when traveling to The Bahamas, as well as proof of anticipated departure from The Bahamas. Those traveling to The Bahamas on a cruise may use another Western Hemisphere Travel Initiative (WHTI) compliant document.

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If you're planning on traveling by land or sea, usually a passport card will suffice, though it's recommended to have a book in the event of an emergency flight. For some closed-loop cruises, i.e. originating in and returning to the US on the same trip, a state-issued driver's license can be enough.

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Instead, an official birth certificate and government-issued identification (like a driver's license) would be enough. Be sure to check with the cruise line, though, as some companies may still require a passport to travel.

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What Do I Need to Travel to Cancun?
  • Passport valid for at least 6 months from date of entry.
  • FMM Mexico Tourist Card (if arriving by land)
  • Visa for Mexico (when applicable)
  • Return flight ticket.
  • Documentation proving the purpose of the visit (such as hotel reservation)
  • Proof of sufficient funds.


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Based on current rules and trends, you cannot leave the US with an expired passport. However, traveling with one is not untrue; as of May 2021, the US government made it possible for citizens with expired passports to return home using their expired passports if they expired on or after the end of January 2020.

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