Visas for International Participants

Visa Waiver Countries

Visa waiver travelers from ALL 27 Visa Waiver Program countries must present either a machine-readable passport or a U.S. Visa. To learn more about the Visa Waiver Program & Machine Readable Passports see

Non-Visa Waiver Countries

We recommend that you apply for your Visa at least three months in advance. Currently there is a mandatory security check period of 30 days for people whose passports are issued from several countries. U.S. consular offices now interview most applicants as part of the application process. Please ensure you arrive at the embassy with all required documentation at the time of your interview. Note that the ION does not intervene in U.S. State Department’s issuance of Visas.

Conference attendees requesting a visa letter to attend a conference must:

  1. Submit the visa letter request form using the button below.
  2. Register and pay all conference registration fees BEFORE a letter of invitation will be sent.

Exemptions to this policy apply only to those authors whose papers have been accepted for presentation, company personnel working in the exhibit area or trade associated press.

If the attendee is unable to secure a Visa, he/she will need to apply for a refund according to the printed refund rules of the event. Visa letter requests will only be reviewed AFTER you have submitted the Visa letter request form for your desired conference.

Request a Letter of Invitation


Travel Information

Ground Transportation


Charley's Taxi offers a flat rate of $33 per car one-way from Honolulu International Airport to Waikiki.  Visit their website or call 1-808-233-3333 to reserve your airport transfer.

Shuttle Transportation

Airport shuttle transportation is available through Fly Shuttle Tours. To make a reservation, visit

Rental Cars

Six rental car companies, Avis, Budget, Dollar, Enterprise, Hertz and National are located on airport.  Four others provide off-airport car rentals.  Registration counters are located in the Baggage Claim area. On airport rental car offices are located on the ground level opposite Baggage Claim G. For more information on rental cars, please visit the Honolulu International Airport's ground transportation site.

Hotel Parking Fees and Driving Directions

Hotel Parking Fees

  • Valet Parking (no self-parking avaialble): $45 per day (subject to change)

Driving Directions from Honolulu International Airport

Visit the Hilton Waikiki Beach directions page for point-to-point driving directions.

Getting Around Waikiki

Waikiki Trolley

Waikiki Trolley is an easy, fun and affordable way to experience Waikiki and Honolulu. Discover the best in scenic, historical and cultural attractions as well as dining and shopping on the Trolley! A four-day adult pass can be purchased for $65 online, which includes unlimited riding privileges on all three lines (red, pink, and green) for four days.  A single-line pass can be purcahased for $18-$30. For more information, or to purchase tickets, Visit the Waikiki Trolley website.

The Bus

The City & County of Honolulu provides an island-wide bus transportation system that serves Honolulu International Airport as well as hundreds of stops throughout Honolulu. Adult fare is $3 one-way, and a 7-day pass can be purchased for $30. For more information, visit The Bus's website.

What to Do in Honolulu

Go Hawaii is a treasure trove of information about what to see and do on Oahu, whether you seek sun, surf, dining, or an outdoor adventure.