Everyone traveling to United States is obliged to have a valid travel authorization. The only exception are Canadian citizens that can travel freely. If you won’t hold an approved visa or ESTA when arriving to the borders or airport, you won’t be allowed to enter the United States.
Tourist visa doesn’t allow you to work or study in USA, but you can attend a business meetings or events.
Technically not a visa but replaces it for selected nationalities. It is an online travel authorization (Electronic System for Travel Authorization = ESTA) allowing citizens of selected countries to visit USA as a tourists. It is valid for 2 years and allows you to visit USA multiple times during this time period, each visit for maximum of 90 days. If your passports expires before the 2-year period, ESTA will become invalid and you will have to apply again.
It’s not so long ago when the only way was to arrive to US embassy and handle everything in person. Fortunately USA implemented online travel authorization for some countries few years ago.
Interested in visa allowing you to work?
The easiest to get tourist authorization and only citizens of selected countries are able to apply.
ESTA is valid for 2 years during which, you are allowed to enter USA multiple times for maximum of 90 consecutive days. It allows you to travel for leisure or business but not to work or study.
Disadvantage compared to regular tourist visa is that in case you will be denied entering the country, you are not able to dispute this decision. However if you completed the application truthfully, this is happening very rarely.
This visa is more complicated to obtain than ESTA but majority of nationalities are required to use this one as they are not eligible for ESTA. Visitor visa is also more expensive (160 USD, approx. 140 EUR/126GBP).
The fastest and the easiest visa to obtain. Just complete an online form with your personal details and passport number, and in less than 24 hours, you will have your approved visa delivered via email.