If you are traveling to the United States from abroad to attend Sea-Air-Space, there are a few steps you should take to ensure you are legally entering the country. The United States does not require a visa for entry from every country. To see the 38 countries that do not require a visa, review the visa waiver program.

If the United States does require a visa from your country of origin, please complete a U.S. State Department Online Nonimmigration Visa Application. This online application is used by all U.S. embassies. Once you complete the online application, a confirmation will be emailed to you outlining further instructions for an appointment. U.S. immigration services recommend that you contact the U.S. embassy/consulate in your area to find out what other supporting documents you will need to take with you to your appointment.

To register and attend Sea-Air-Space if you do require a visa, first complete the registration process in full for each attendee and exhibitor requiring a letter of invitation.

Once you have registered, you can obtain a letter of invitation by contacting

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International Travel Recommendations

Prior to booking your travel for Sea-Air-Space 2021, we recommend reviewing the World Health Organization’s latest guidelines on international travel from your location to the United States and updates from the state of Maryland on its quarantine recommendations and safety precautions. Additionally, check with your airline before you book your flight to ensure maximum flexibility with re-bookings and cancelation policies.