The C-1 Transit Visa is a Nonimmigrant Visa that allows foreign nationals to enter the United States while transiting to another foreign country. The C-1 Transit Visa can be used to travel in and out of the United States when the foreign national’s final destination is another country. The applicant's principal purpose of trip to the United States should be transit, and should furnish sufficient proof of his/her onward journey.
A C-1 Visa holder may stay in the United States for a maximum of 29 days. He/she is required to depart the United States on the proposed flight or ship, or within 29 days, whichever is earlier. Travelers with a passport from a Visa Waiver country do not need to obtain a C-1 Visa. A C-1 Visa holder cannot change his/her status or extend his/her stay while in the United States.