Registration & Visa
visa Information
Visa – Helpful Links
Please check with your local embassy/consulate for specifics and latest instructions.
- “Travel to Europe” mobile app
- The Travel to Europe mobile application is designed for non-EU travelers who are subject to EES registration. It allows people to pre-register their passport data and facial image before reaching a border crossing point where the mobile app is in use. Through the app travelers can also fill in the entry conditions questionnaire in advance.
On Arrival in Portugal – Immigration and Customs
Portugal is a member of the Schengen Area. Entry requirements vary depending on your nationality, the purpose of your visit, and the length of your stay.
Travelers from many countries may enter Portugal for short stays of up to 90 days within any 180-day period without a visa. Other travelers may be required to obtain a Schengen visa before traveling.
All travelers should ensure that their passport meets Portugal’s entry requirements and confirm whether a visa or other travel authorization is required well in advance of departure.
For current entry and visa requirements, please visit the official Portuguese Ministry of Foreign Affairs or European Union travel information.
Invitation Letter Request
If you need an invitation letter which extends an invitation to ICIS 2026, please follow the steps below:
• Please note that your AIS membership should be current.
• Complete the Invitation Letter Request Form
• The AIS Registrar will issue the invitation letter within two business days upon receipt of the completed invitation letter request form.
Please note: The AIS Office will be closed during the following US holidays:
• Monday, September 7
• Thursday, November 26
• Friday, November 27
Visa Letter Request
If you need a visa letter for your visa application to attend ICIS, please follow the steps below once you have registered for the conference:
- Please note that your AIS membership should be current.
- Register and complete your payment for your conference registration.
- Complete the Visa Letter Request Form and attach your ICIS 2026 conference registration confirmation.
The AIS Registrar will issue the visa letter within two business days upon receipt of the completed visa letter request form.
Please note: The AIS Office will be closed during the following US holidays:
- Monday, September 7
- Thursday, November 26
- Friday, November 27
