You may travel to the USA without a visa under the Visa Waiver Program, if you are a citizen of a VWP eligible country and you fulfil the below requirements:
- The duration of your stay is 90 days, or less
- You have a confirmed return ticket or a ticket for a connecting international flight
- You have sufficient funds to cover your entire stay
- You will arrive in the USA on an airline participating in the VWP, such as Finnair
- You have a valid biometric passport, which contains a microchip
Citizens of the following countries are eligible to travel under the Visa Waiver Program:
Andorra, Australia, Austria, Belgium, Brunei, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Japan, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovakia, Slovenia, Spain, South Korea, Sweden, Switzerland, Taiwan (China) and the United Kingdom.
Read more about Visa Waiver Program