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Black background with ringing bell icon and text Travel reminder

The International Students and Scholars Center wishes you a successful end to the spring 2022 semester. If you are planning to travel during the summer break, we want to provide you with important information. 

Travel reminders 

COVID-19 test requirements

As a reminder, the Centers for Disease Control and Prevention requires all travelers flying into the U.S. from abroad to submit a negative COVID-19 test prior to being permitted to enter the U.S. The viral test will need to be taken within 24 hours prior to your flight departure date to the U.S. If you do not provide proof of a negative test or documentation of recovery, you will be denied boarding onto your flight.

Refer to the CDC website for more detailed information about this requirement. 

COVID-19 vaccination requirements

Students planning to re-enter the U.S. must be fully vaccinated in order to enter the U.S. Any ASU student not yet vaccinated can receive vaccines for free on campus at any ASU Health Services location. ASU Health Services has locations on all four campuses, and you can make an appointment through the patient health portal or walk in. 

Review the CDC’s website for a list of acceptable vaccines and other important information.  

Travel assistance

ASU wants to ensure that when you are ready to travel to the U.S., you have a smooth experience. Before you travel, be sure to download, print and read the following letters carefully. Remember to bring them in your carry-on luggage during your travels.

Need a travel signature? 

If you are a student with a continued attendance I-20 and are planning to travel back to the U.S., remember to check page 2 of your I‐20 or page 1 of your DS‐2019 for a valid travel signature. You can review our website for additional documentation required when re-entering the U.S.

DC = Current students

Travel signatures are required to re-enter the U.S., and are valid for one year from the date last signed for current students.


Travel signatures are required to re-enter the U.S. for students on Post-OPT or STEM-OPT, and are valid for six months from the date last signed.

If you are traveling within the U.S., you do not need a travel signature, but you must carry identification documents with you, including your I‐20 or DS‐2019, a printout of your I‐94, and a valid passport.

How to get a travel signature

Submit your travel signature request for your I-20 or DS-2019 document using the ISSC self-service portal. Remember that a travel signature is NOT required to depart the U.S. It is only required when re-entering.  

Contact us

As always, the ISSC is here for you, no matter where you are or what time zone you are studying from. If you have questions or need assistance, please contact us at or use the live chat feature on all pages of the ISSC website, Monday through Friday from 9 to 11 a.m. and 1 to 3 p.m. (Arizona time). You can also make an appointment with an ISSC staff member or join us for express advising via Zoom every Wednesday from 2 to 3:30 p.m. and every Tuesday and Thursday from 3 to 5 p.m. (Arizona time).