Puerto Rico is a US territory, people born on the island are US citizens, and the currency is the US dollar. For Americans, flying to San Juan from the mainland is a domestic trip: no passport, no immigration line and no customs on arrival. What has changed in recent years is the ID you need at the airport. Since May 7, 2025, TSA enforces REAL ID on every domestic flight, including flights between the mainland and Puerto Rico. Visitors from other countries face a different set of rules, and they are exactly the same as for entering the rest of the United States.
US citizens: no passport, but bring the right ID
A US citizen traveling directly between the mainland and Puerto Rico does not need a passport. The federal government lists Puerto Rico, along with the US Virgin Islands, Guam, American Samoa and the Northern Mariana Islands, as places Americans can travel to and from without one.
You still need an acceptable photo ID to get through airport security. Since May 7, 2025, a standard driver's license that is not REAL ID–compliant is no longer accepted at TSA checkpoints. Acceptable documents include:
- A REAL ID–compliant driver's license or state ID (usually marked with a star in the upper corner)
- A state-issued Enhanced Driver's License or Enhanced ID
- A US passport or US passport card
- A DHS trusted traveler card such as Global Entry, NEXUS or SENTRI
- A US military ID, or a permanent resident card for green card holders
If you arrive at the checkpoint without one of these, TSA's ConfirmID program lets you pay a $45 fee, in effect since February 1, 2026, so that officers can try to verify your identity. It is a fallback, not a plan, and verification is not guaranteed. TSA recommends paying online before you leave for the airport if you know you will need it. The simplest fix is to pack your passport or passport card even though it is not required.
TSA does not require ID for children under 18 on domestic flights, although airlines can set their own rules for minors, so check with your carrier.
International visitors: the same rules as the rest of the US
Puerto Rico applies US immigration law, so a foreign visitor needs the same documents to land in San Juan as to land in Miami or New York.
- Visa Waiver Program countries. Citizens of participating countries can visit for tourism or business for up to 90 days without a visa, but they must hold an approved ESTA (Electronic System for Travel Authorization) before boarding a plane or ship to the United States, and a valid passport. Apply only through the official ESTA website run by US Customs and Border Protection.
- Everyone else. Travelers from countries outside the program need a valid US visitor visa (usually B-1/B-2), applied for through a US embassy or consulate, plus a passport.
- Permanent residents. Green card holders use their card just as they would for any US trip.
Time spent in Puerto Rico counts as time in the United States. If you visit New York and then San Juan on the same trip, both stays come out of the same authorized period. An ESTA or visa does not guarantee entry; the CBP officer at your first US port of entry makes the final decision.
Arriving on an international flight
Flights from outside the United States, including from the Dominican Republic and most other Caribbean islands, go through US Customs and Border Protection at Luis Muñoz Marín International Airport. Everyone on those flights, including US citizens, goes through passport control. For international air travel, US citizens need a valid passport (or another document CBP accepts for that purpose, such as a trusted traveler card or US military ID with official orders). If your trip combines Puerto Rico with Saint Martin, the Dominican Republic or any other foreign island, bring your passport.
Cruise passengers follow the usual US rules. On a closed-loop cruise that starts and ends at the same US port, US citizens can often travel with a government photo ID and a birth certificate. Cruise lines can ask for more, though, and a passport covers you if you have to fly home from a foreign port.
Leaving Puerto Rico: the agriculture check
This catches more visitors than anything else. Because the island has plant pests and diseases the mainland wants to keep out, the US Department of Agriculture inspects all checked and carry-on bags headed from Puerto Rico to the mainland. At San Juan the inspection points are at the entrance to each terminal, before you check in. Most fresh fruits and many plants and flowers are restricted, because a single piece of fruit can carry a pest that costs mainland farms millions. A short list of fruits is allowed, including avocado, fresh citrus, coconut, papaya, pineapple and strawberries, but they still have to be shown to the inspector. If you are not sure about an item, declare it. Undeclared prohibited items can lead to civil penalties. The USDA's Puerto Rico travel page lists what is allowed.
US citizens are not required to show a passport when flying from Puerto Rico to the mainland, though federal guidance encourages carrying proof of citizenship, since you may be asked about it.
Other documents worth thinking about
- Driving. A valid US driver's license works in Puerto Rico just as it does in any state. Rural addresses are often given as a road number and kilometer marker, such as "Road 155, km 33", so note the small km posts along the shoulder.
- Hopping to the US Virgin Islands. St. Thomas and St. Croix are also US territories, so US citizens do not need a passport. You do pass through a CBP check when you leave the USVI for the mainland, so carry proof of citizenship.
Good to know
- US citizens: no passport needed, but a REAL ID–compliant license or another TSA-accepted ID is required to fly. Check TSA's REAL ID page before your trip.
- No acceptable ID: TSA ConfirmID costs $45 and is not guaranteed to work.
- International visitors: passport plus ESTA or a US visa, exactly as for the mainland.
- Any foreign stop on the itinerary means you need a passport.
- Expect a USDA bag inspection before check-in when you fly from San Juan to the mainland, and leave the fresh fruit behind.
See our guide to Luis Muñoz Marín International Airport for getting from SJU into the city, and the top things to do in Puerto Rico for planning the rest of the trip.
