The answer is no. Illegal immigrants cannot travel to Puerto Rico because it is a U.S. territory and they do not have the proper documentation.
However, they will need to have a passport and visa in order to do so. The process of getting a passport and visa can be difficult, but it is possible.
Once the illegal immigrant has these documents, they will be able to travel to Puerto Rico without any problems.
Can I Travel to Puerto Rico Without Papers?
Yes, you can travel to Puerto Rico without papers. The government of Puerto Rico does not require visitors to have a passport or other travel documents to enter the island. However, if you are traveling from another country, you will need a valid passport to enter the United States.
Once you are in the United States, you do not need any additional documents to visit Puerto Rico.
Do You Go Through Immigration When Traveling to Puerto Rico?
Yes, you will go through immigration when traveling to Puerto Rico. All visitors must clear customs and immigration upon arrival in Puerto Rico, even if they are coming from another US territory such as the Virgin Islands. US citizens do not need a passport to enter Puerto Rico, but they will need to show proof of citizenship such as a birth certificate or naturalization papers.
Non-US citizens will need a valid passport and visa for entry.
Can an Undocumented Fly to Puerto Rico?
Yes, an undocumented person can fly to Puerto Rico. There are no immigration checkpoints between Puerto Rico and the mainland United States, so an undocumented person can board a flight on the mainland and disembark in Puerto Rico without any trouble. However, once in Puerto Rico, the individual will be subject to the same laws as any other visitor or resident of Puerto Rico.
This means that they will need to have proper documentation if they wish to stay on the island for an extended period of time or work there.
TIPS FOR UNDOCUMENTED INDIVIDUALS TRAVELING IN THE U.S.
Can an Illegal Immigrant Travel to Hawaii?
Yes, an illegal immigrant can travel to Hawaii. However, they will not be able to obtain a tourist visa and will need to find another way to enter the country. Illegal immigrants may be able to enter Hawaii through a humanitarian parole program or by marrying a US citizen.
Once in Hawaii, they may be able to obtain a driver’s license and work permit.
Can I Travel to Puerto Rico With Pending Asylum?
Yes, you can travel to Puerto Rico with pending asylum. There are no restrictions on travel for asylum seekers in the United States. You will need to bring all of your documents with you when you travel, including your asylum application and any supporting documentation. 
It is also a good idea to bring a copy of the most recent order from the court if you have one.
Conclusion
Yes, an illegal immigrant can travel to Puerto Rico. However, they will need to obtain a tourist visa before they are able to do so. The process of obtaining a tourist visa can be found on the website of the Puerto Rican consulate.
