International Attendees

The ASCO Annual Meeting brings together oncology professionals from all over the world. We encourage international attendance and we are happy to help with your travel planning by providing the following information.

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Visa Process

ASCO will provide a letter stating your intent to attend the ASCO Annual Meeting, which may assist you in obtaining your travel visa. Attendees may request a visa letter using the link in the registration confirmation email or by logging into the registration website to review their registration. Attendees must register and pay in full prior to requesting a visa letter. Visa letters are not available to attendees who are not paid in full or who have canceled their registration.

If you need another copy of your registration confirmation email, please contact our registration team.

If you are unable to receive a visa to leave your country or are unable to enter the United States, contact us regarding a refund.

Citizens from countries that participate in the Visa Waiver Program may be unable to enter the United States without Electronic System for Travel Authorization (ESTA) approval from the U.S. government. For more information about how to apply for ESTA authorization, visit the U.S. Customs and Border Protection website.

Due to recent policy changes, U.S. Consulates may request additional documentation from applicants for visas to enter the United States. This may include information concerning travel and work history as well as other details. We encourage travelers to familiarize themselves with these procedures and factor in additional time for visa processing.

For more information about obtaining a visa, please visit the U.S. State Department website.

If your visa application to attend the Annual Meeting is pending after 45 days and you feel you are at risk to miss the conference, report your case to The National Academies International Visitors Office by completing the Visa Questionnaire. Be sure to identify "American Society of Clinical Oncology Annual Meeting" in the "Purpose of Visit" field.

Plan Your Trip

International Attendees have full access to the Attendee Resource Center, which has a host of resources to make it easier to plan your time in Chicago. Through the ARC, attendees can find information on transportation, guides to the city, access to materials and more.

Please contact ASCO Meetings with any questions regarding travel, registration, hotel, and transportation.

Additional Information to Prepare for Your Trip

In June, Chicago, Illinois, has an average high of 81°F (27°C) and average low of 62°F (17°C). Get the Chicago, Illinois 10-day weather forecast.

Business casual is appropriate for the meeting. Some meeting rooms might feel cold, so a sweater or light jacket might be helpful. Comfortable shoes are recommended as there are long walking distances within the convention center.

The United States uses 110 to 120 volts AC (60 cycles). Adaptors that may be required are for two flat blades or for two flat blades with a grounding pin.

Embassies & Consulates
All embassies are located in Washington, D.C. Some consulates are located in major cities, including Chicago. View a list of foreign consulates in Chicago.

Exchange Rate
Help plan your trip by checking the current exchange rate of your currency in U.S. dollars.

Foreign Languages
Major hotels may have multilingual employees. Language assistance at the Annual Meeting is also offered at the International Assistance Desk in the Concierge Services area (North Building, Grand Concourse Lobby) at McCormick Place. ASCO’s International Affairs staff will be at this Desk throughout the Annual Meeting. Interpreters who are fluent in French, German, Italian, Japanese, Mandarin Chinese, Portuguese, and Spanish will be prepared to answer your questions if you prefer to speak your native language

You are strongly encouraged to purchase international (travelers) medical insurance that will assist in covering any health-related expenses you may incur while you are in the United States and/or Canada.

While accidents are rare, there is always a possibility of injury or sickness. Therefore, if you are interested in obtaining insurance, you should research the options and arrange for coverage at least 30 days before you are scheduled to travel. An example of a company that provides this service is MEDEX.

Time Zone
The United States has four time zones: Eastern, Central, Mountain, and Pacific. Chicago, Illinois, is located in the Central time zone.    

Tipping in the United States is customary. A 15% to 20% tip is usually expected in restaurants, taxis and for services you receive.