Passport, REAL ID and Entry Rules for St. Thomas

St. Thomas is part of the U.S. Virgin Islands, an unincorporated U.S. territory. For a U.S. citizen flying from the mainland or Puerto Rico, that makes the trip a domestic one: no passport, no immigration line, no inspection on arrival. The document that matters is a REAL ID.

The rules change on the way home. Every passenger leaving Cyril E. King Airport for the mainland clears U.S. Customs and Border Protection inside the terminal, before boarding.

Do You Need a Passport to Fly to St. Thomas?

No. U.S. citizens traveling from the mainland or Puerto Rico do not need a passport for St. Thomas, St. John or St. Croix. The flight is treated the same as one between two states.
Lawful permanent residents travel on their green card, which works as both photo identification and proof of status.

Citizens of every other country need what they would need for Miami or New York: a valid passport and either a U.S. visa or an approved ESTA. Entering the U.S. Virgin Islands is entering the United States.

A passport remains the simplest document to carry. It satisfies TSA, it satisfies the customs officer on departure, and it covers a day trip to the British Virgin Islands, which a driver’s license does not.

What ID You Need at the STT Checkpoint

Adults 18 and over must present a REAL ID-compliant license or another accepted document. REAL ID has been enforced at U.S. checkpoints since 7 May 2025. A compliant card carries a star in the upper corner. A standard state license without one is no longer accepted.
TSA also accepts:
U.S. passport or passport card
Permanent resident card
Enhanced Driver’s License
DHS trusted traveler cards: Global Entry, NEXUS, SENTRI, FAST
U.S. Department of Defense ID, including dependents
Foreign government passport
Photo ID issued by a federally recognized Tribal Nation
Veteran Health Identification Card

The full list is published by TSA. Expired documents are accepted up to one year past expiry. A weapon permit and a temporary driver’s license are not accepted at all.
Children under 18 are not required to show identification on domestic flights. Airlines may still ask for proof of age when an infant travels on a lap fare. Document rules at the counter are set by the carrier, so confirm them when you check in.

Since 1 February 2026, a passenger who arrives without an acceptable document may pay $45 for TSA ConfirmID, which covers a ten-day travel period and lets TSA attempt to verify identity. Verification is not guaranteed and the fee is not refunded. Pay through Pay.gov before reaching the airport. Handled at the checkpoint the process can take up to 30 minutes, which at STT is long enough to lose a flight.

Leaving St. Thomas: The Customs Check Before Your Flight

The U.S. Virgin Islands sit outside the U.S. customs territory. Flights to the mainland and Puerto Rico are therefore inspected before departure rather than on arrival, and Cyril E. King Airport runs a CBP pre-departure operation inside the terminal.

The result is a queue that does not exist at an ordinary domestic airport. Departing passengers complete a customs declaration, CBP Form 6059B, clear the CBP officers, then join the TSA line. This is the reason the three-hour arrival advice exists at STT. It is not TSA on its own. The terminal guide shows where the hall sits in relation to the gates.

Every passenger leaving for the mainland, U.S. citizens included, should be ready to prove citizenship or immigration status. A passport settles it in one document. Without one, carry a certified birth certificate bearing a raised seal together with a government photo ID. Naturalized citizens may present a Certificate of Naturalization, permanent residents their green card.
The same inspection covers agriculture. Plants in soil cannot travel to the mainland. Most fruit can.

Purchases are declared here as well, and the allowance from the U.S. Virgin Islands is double the standard one. See the shopping guide for what you may bring back duty free.
Midday and early-afternoon departures are the crush. Local advisories have warned of customs and security lines building from late morning on busy weekends. Check your departure time against that before deciding when to leave for the airport.

When a Passport Is Required

A passport becomes necessary in four situations.
The first is a trip to the British Virgin Islands. Tortola, Virgin Gorda and Jost Van Dyke are a British Overseas Territory, so the ferry from Red Hook or Charlotte Amalie is an international crossing. A passport is required in both directions, even on a same-day trip.

The second is any traveler who is not a U.S. citizen, on any leg.

The third is a cruise or itinerary that calls at a port outside U.S. territory. St. Thomas is often one stop among several, and the rules follow the whole itinerary rather than this island.
The fourth is a diversion. It is rare, but an international diversion or a medical evacuation can route through a non-U.S. airport, and the document you left at home is the one you then need.

Entry Requirements for Visitors from Other Countries

Foreign nationals enter the U.S. Virgin Islands under standard U.S. immigration rules. There is no separate territorial visa and no local arrival form.

Visa Waiver Program Countries

Citizens of 42 countries may travel for tourism or business for 90 days or less without a visa, provided they hold an e-passport and an approved ESTA:
Andorra, Australia, Austria, Belgium, Brunei, Chile, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Japan, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands, New Zealand, Norway, Poland, Portugal, Qatar, San Marino, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, Taiwan, United Kingdom.

The program is not open to every European country, and membership changes. Turkey, Bulgaria, Cyprus and Romania are not included. Confirm your own nationality on the State Department’s Visa Waiver Program page before booking.

The separate Guam and Northern Mariana Islands waiver does not extend to the U.S. Virgin Islands. Nationals covered only by that program still need a visa or an ESTA for St. Thomas.

ESTA

ESTA is a travel authorization, not a visa. Apply online through U.S. Customs and Border Protection at esta.cbp.dhs.gov before boarding. An approved ESTA permits travel to a U.S. port of entry; the officer there decides admission. It cannot be extended, it does not allow a change of status, and it caps the stay at 90 days.

Some travelers are barred from the Visa Waiver Program regardless of nationality and must apply for a visa instead: anyone present in North Korea, Iran, Iraq, Libya, Somalia, Sudan, Syria or Yemen on or after 1 March 2011, anyone present in Cuba on or after 12 January 2021, and dual nationals of Cuba, North Korea, Iran, Iraq, Sudan or Syria. Limited exceptions cover diplomatic and military travel.

If You Need a B-2 Visitor Visa

Travelers outside the Visa Waiver Program apply for a B-2 visitor visa at a U.S. embassy or consulate, not at the airport and not on arrival. The application runs through the DS-160 form followed by an interview appointment, and it requires a passport valid for six months beyond the intended departure date unless your country holds a six-month club agreement with the United States.

Fees, photograph specifications and payment methods are set by each post and differ from country to country. Check the current requirements on the State Department’s visitor visa page and with the embassy or consulate where you will interview.