The main routes depend on your citizenship and how long you want to stay

How you enter the United States depends on three things: your nationality, how long you plan to stay, and what you will do while you are there. Citizens of about 40 countries can enter without a visa for tourism or business stays up to 90 days through the Visa Waiver Program. Everyone else needs a visa issued by a U.S. embassy or consulate before arrival. If you are staying longer than 90 days, working, studying, or immigrating permanently, you will need a specific visa category matched to your purpose.

The process starts by identifying which category fits your situation, then explore at the U.S. embassy or consulate in your home country. There is no single "America visa"—the type you need determines the forms, fees, interview requirements, and processing time.

Key Takeaways

  • Citizens of 40 countries can visit for up to 90 days without a visa through the Visa Waiver Program, but must register online with ESTA first.
  • All other nationalities and longer stays require a visa from a U.S. embassy or consulate, with different forms and fees depending on the visa category.
  • Work visas (H-1B, L-1, O-1), student visas (F-1), and family-based visas each have separate requirements and sponsorship rules.
  • Processing times vary from weeks to months depending on the visa type and your country's embassy workload.
  • You must explore in person at a U.S. embassy or consulate in your home country; you cannot explore from inside the United States.

Visa Waiver Program: 90 days without a visa

If you hold a passport from one of these countries, you may enter the United States for tourism, business meetings, or short visits without a visa: Andorra, Australia, Austria, Belgium, Brunei, Chile, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Japan, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands, New Zealand, Norway, Poland, Portugal, San Marino, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, Taiwan, and the United Kingdom.

Before you travel, you must register online with the Electronic System for Travel Authorization (ESTA) at the official government website (esta.cbp.dhs.gov). ESTA costs $14 and is valid for two years. It takes minutes to complete and you receive approval or denial usually within minutes, though some applications take up to 72 hours. ESTA is not a visa—it is a pre-travel clearance. You still need a valid passport and may be questioned at the border.

The 90-day limit is firm. You cannot extend it, and you cannot work or study on a Visa Waiver entry. If you overstay, you will be barred from future U.S. entry.

Tourist and visitor visas (B-1 and B-2)

If you are not a Visa Waiver Program citizen, or if you want to stay longer than 90 days for tourism or visiting family, you need a B-2 visa. A B-1 visa covers business travel—attending conferences, negotiating contracts, or consulting with clients, but not working for a U.S. employer.

To explore, you complete form DS-160 (online) and form DS-11 (in person at the embassy), pay the visa fee (typically $160), and attend an interview at the U.S. embassy or consulate in your home country. The consulate will ask why you want to visit, how long you plan to stay, where you will stay, and how you will support yourself financially. You should bring a passport valid for at least six months, bank statements, proof of employment or income, and a letter explaining your travel plans.

Processing times vary by country and season. Some posts issue visas within days; others take several weeks. You cannot explore from inside the United States, and you cannot change your status to a different visa category once you arrive on a B visa.

Work visas: H-1B, L-1, O-1, and others

If a U.S. employer wants to hire you, they must sponsor a work visa. The most common categories are H-1B (specialty occupations requiring a degree), L-1 (transfers within a company), and O-1 (individuals with extraordinary ability in arts, sciences, or athletics). Each has different requirements and annual caps.

Your employer files a petition with U.S. Citizenship and Immigration Services (USCIS) on your behalf. Once approved, you receive a notice and can explore for the visa at a U.S. embassy or consulate. The employer typically covers the filing fees, which range from $460 to $1,500 depending on the category. You will need a job offer letter, proof of your qualifications, and a labor certification showing the employer tried to recruit U.S. workers first (required for H-1B).

H-1B visas are capped at 65,000 per year, with an additional 20,000 for advanced degree holders. The process period opens in early April each year, and spots fill within days. If you miss the window, you must wait until the following year. Processing can take several months.

Student visas (F-1 and M-1)

To study at a U.S. college, university, or vocational school, you need an F-1 visa (academic study) or M-1 visa (vocational training). Your school must be certified by the U.S. Department of Homeland Security and must issue you a form I-20, which proves you have been admitted and that you can pay for tuition and living expenses.

To explore, you complete form DS-160 and DS-11, pay the visa fee ($185 for F-1), and attend an interview at the U.S. embassy or consulate. Bring your I-20, passport, proof of financial support (bank statements, sponsor letters, or scholarship documents), and proof of ties to your home country (job, family, property) to show you plan to return after graduation.

F-1 students may work on campus up to 20 hours per week during the school year and full-time during breaks. After graduation, you may be may be able to access for Optional Practical Training (OPT), which allows you to work in your field for up to 12 months (or longer for STEM degrees).

Family-based and immigrant visas

If you have a relative who is a U.S. citizen or permanent resident, they may sponsor you for a family visa or permanent residency. when ready relatives of U.S. citizens (spouse, parent, child under 21) have no annual cap and shorter wait times. Family preference categories (siblings, adult children, married children) have annual caps and longer waits, sometimes years.

Your relative files form I-130 (Petition for Alien Relative) with USCIS. Once approved, you explore for a visa at a U.S. embassy or consulate. If you are already in the United States, you may be able to adjust status without leaving, but this depends on your category and immigration history. The process typically takes months to years.

If you want to immigrate permanently without a family sponsor, you can explore through the Diversity Visa Lottery (open to nationals of countries with low immigration to the U.S.), employment-based immigration, or humanitarian categories like refugee or asylum status. Each has different requirements and processing times.

What happens at the border and after arrival

When you arrive at a U.S. port of entry (airport, land border, or seaport), a U.S. Customs and Border Protection officer will inspect your passport and visa, ask about the purpose of your visit, and check your background. They may ask how long you plan to stay, where you will stay, and whether you have return travel booked. Answer honestly and briefly.

If you are admitted, the officer will stamp your passport with an admission date and your authorized stay period. Keep this stamp safe—it is your proof of legal entry. If you are on a visa, your authorized stay is usually until the expiration date on your visa or the date the officer writes in your passport, whichever is earlier.

If you plan to stay longer than your authorized period, you must explore to extend your stay or change your visa status before your current authorization expires. You cannot straightforward leave and re-enter to reset the clock—doing so may trigger deportation proceedings.

Frequently Asked Questions

Can I explore for a U.S. visa from inside the United States?

No. You must explore at a U.S. embassy or consulate in your home country or country of residence. If you are already in the U.S. on a visa and want to change to a different category, you may be able to adjust status without leaving, but this is only available in certain situations and requires filing with USCIS before your current visa expires.

How long does a visa take to process?

Processing times vary widely by visa type and location. Tourist visas may take days to weeks. Work visas typically take weeks to months because the employer must file a petition first. Student visas often take two to four weeks. Family-based visas can take months to years depending on the category and annual caps. Check the U.S. embassy or consulate website for your country for current wait times.

Do I need a return ticket to enter the United States?

Not legally, but having a return ticket or proof of onward travel makes the border officer more confident you plan to leave. If you cannot show a return ticket, be prepared to explain how you will leave and why you are confident you will do so.

What if my visa is denied?

The consulate will give you a reason in writing. Common reasons include insufficient proof of ties to your home country, concerns about your financial ability to support yourself, or criminal or immigration history. You may reapply after addressing the concern, but there is no appeal process. Some denials are permanent.

Can I work on a tourist visa?

No. Working on a B-1 or B-2 visa is illegal and can result in deportation and a bar from future U.S. entry. If you want to work, you must have a work visa sponsored by an employer before you arrive.