Thomas is part of the USVI, so US citizens traveling directly from a US location won't need a passport. The same rules apply to St. Croix and St. John, the other main islands in the USVI, as well as Puerto Rico and the Spanish Virgin Islands Culebra and Vieques.

Yes, U.S. citizens traveling directly from the U.S. mainland or Puerto Rico can visit St. Thomas (U.S. Virgin Islands) without a passport. Because it is a U.S. territory, the flight is considered "domestic," similar to flying from New York to Florida. However, as of May 7, 2025, you must have a REAL ID-compliant driver's license or another TSA-accepted ID (like a passport card or Global Entry card) to board the aircraft. While a passport isn't required for entry, it is still "highly recommended" by travel experts in 2026. This is because if your flight is diverted to a foreign island (like nearby Tortola or St. Maarten) due to weather or an emergency, you would need a passport to return home easily. Furthermore, if you plan to take a ferry to the British Virgin Islands for a day trip, you will absolutely need a passport to clear their customs and return to St. Thomas.

That depends entirely on how you are traveling to St. Thomas and your citizenship.

Here’s the breakdown:

1. If You Are a U.S. Citizen Traveling from the U.S. Mainland (the most common scenario):

Yes, you can go to St. Thomas without a passport, but only if you meet specific conditions.

• By Air or Sea: U.S. citizens traveling directly between a U.S. state or territory (like Puerto Rico) and the U.S. Virgin Islands (St. Thomas, St. John, St. Croix) do not need a passport.
• Accepted ID: You must present a government-issued photo ID (like a driver’s license) and, if flying, a copy of your birth certificate (original or certified copy is safest). However, this is at the discretion of the airline and TSA.
• Strongly Recommended: Even though it’s not strictly required, the U.S. Department of State and airlines strongly recommend carrying a valid U.S. passport. It is the gold standard for identification and is absolutely required if you have an emergency and need to travel to a foreign country (like the nearby British Virgin Islands) or if your flight gets rerouted.

The Reality: Most major airlines’ systems will ask for passport information when booking international destinations, even US territories. It’s much simpler to travel with your passport.

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2. If You Are a U.S. Citizen on a Closed-Loop Cruise (starting and ending at the same U.S. port):

Yes, you can usually go without a passport. Under the Western Hemisphere Travel Initiative (WHTI), U.S. citizens on closed-loop cruises can use a government-issued photo ID and an original birth certificate. However, cruise lines often have their own rules and may require a passport. You must check with your specific cruise line. Furthermore, if you miss the ship’s departure from St. Thomas, you would need a passport to fly back to the U.S.

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3. If You Are Not a U.S. Citizen or Are Traveling from or through a Foreign Country:

No, you cannot go to St. Thomas without a passport. All non-U.S. citizens must present a valid passport