We encourage you to wait until you have received your J visa to make your flight arrangements to avoid financial loss if your visa is delayed or denied. You can enter the U.S. as early as 30 days before the program start date listed Section 3 of your DS-2019 form. If you plan to enter the U.S. more than 15 days after the program start date which is listed in Section 3 of the DS-2019, it is very important that you notify both your department and International Services, firstname.lastname@example.org. An email will need to come from your host department approving the change in program dates. If you do not change the program start date and enter more than 30 days after the date, you can be denied entry to the U.S. at the port of entry.