International travel requires advance planning and careful attention to details. Most importantly, make certain you have all the required documents with you in order to re-enter the United States.
Your passport must be valid for six months beyond your date of re-entry.
Your visa stamp does not determine how long you can remain in the United States. Therefore, you may stay in the United States beyond the expiration date of your F-1 visa stamp as long as your I-20 remains valid. However, should you choose to travel internationally, it will be necessary to apply for a new visa stamp in order to reenter the United States.
Re-entering the country requires a travel signature on your I-20. Travel signatures are valid for 12 months. Before you leave the country, be sure that your signature will not be more than 12 months old on your date of re-entry.
You will need financial documents to prove that you have funding to cover your educational and personal expenses in the United States. Documents may be in the form of a bank statement or scholarship letter.