Who needs a visa and who doesn't

Whether you need a visa depends on your citizenship and how long you plan to stay. Citizens of 40 countries can enter the United States for tourism or business for up to 90 days without a visa, using the Visa Waiver Program. These countries include most of Western Europe, Japan, South Korea, Australia, and New Zealand. If your country is not on that list, you will need a visa before you travel.

Even if you are from a Visa Waiver Program country, you cannot work, study, or stay longer than 90 days without a visa. You also cannot extend your stay once you arrive. If your plans have changed and you now need to work or study, you must leave and return with the correct visa type.

The U.S. State Department maintains the official list of Visa Waiver Program countries on travel.state.gov. Check that list against your passport to know for certain whether you need a visa.

Key Takeaways

  • Citizens of 40 countries can visit the United States for tourism or business for 90 days without a visa through the Visa Waiver Program.
  • If your country is not on the Visa Waiver Program list, you must obtain a visa before traveling, regardless of how long you plan to stay.
  • Visa Waiver Program visitors cannot work, study, or extend their stay beyond 90 days without leaving and returning with a different visa.
  • You can check the official Visa Waiver Program country list on the U.S. State Department website to confirm your citizenship status.

What happens if you arrive without the right visa

If you are not a citizen of a Visa Waiver Program country and you arrive at a U.S. port of entry without a visa, you will be turned away. U.S. Customs and Border Protection officers check your documents before you board your flight and again when you land. There is no exception for emergency situations or for people who did not know the rule.

If you are from a Visa Waiver Program country but you overstay your 90 days, you become deportable. You will not be able to return to the United States for at least three to ten years, depending on how long you stayed past your allowed time. Future visa applications will be much harder to obtain.

Types of visas and what they allow

The United States issues different visa types depending on your reason for entering. A B-1/B-2 visa is for tourism, visiting family, or short-term business meetings. A F-1 visa is for full-time students. An H-1B visa is for specialty workers, and an L-1 visa is for employees transferred by their company. Each visa type has its own rules about how long you can stay, whether you can work, and what you must do to extend.

Most work visas require your employer to sponsor you and file paperwork with U.S. immigration before you even explore. Student visas require acceptance from a U.S. school. You cannot straightforward decide to work or study once you arrive on a tourist visa — you must have the correct visa type before you enter the country.

How to get a visa if you need one

The process starts at the U.S. embassy or consulate in your home country. You will fill out form DS-160 (the online nonimmigrant visa process) on the State Department website, pay a fee (usually between $140 and $190), and schedule an interview. The interview is required for most visa types and most applicants.

At your interview, a consular officer will ask about your plans, your ties to your home country, your finances, and your background. They decide on the spot whether to issue your visa. Processing times vary by country and by visa type — some take a few weeks, others take several months. Plan ahead and do not book your flight until you have your visa in hand.

You will need documents such as your passport, proof of financial support, a letter from your employer or school, and sometimes a police certificate. The exact documents depend on your visa type. The embassy website for your country lists what you need to bring.

Visa Waiver Program and ESTA

If you are from a Visa Waiver Program country, you do not need a visa, but you do need to register in the Electronic System for Travel Authorization (ESTA) before you board your flight. ESTA is an online form that takes about ten minutes to complete. The fee is $14, and the authorization lasts for two years.

ESTA is not the same as a visa. It is a pre-screening system that allows the U.S. government to check your background before you arrive. You can be denied ESTA even though you are from a Visa Waiver Program country. If you are denied, you must then explore for a B-1/B-2 visa instead.

You must complete ESTA at least 72 hours before your flight. Most people receive approval within minutes, but some applications take longer. Do not wait until the day before you travel.

Special cases: green cards, work permits, and dual citizenship

If you hold a U.S. green card (permanent resident card), you do not need a visa. You can enter with your green card and your passport. If your green card is expired, you can still use it to return to the United States, but you should renew it before traveling.

If you have a valid U.S. work permit or employment authorization document (EAD), you also do not need a visa. Your work permit and passport are enough to enter.

If you hold citizenship in both a Visa Waiver Program country and another country, you can use your Visa Waiver Program passport to enter without a visa. However, you must use the same passport to leave. Mixing passports can cause problems at the border.

What to do before you book your flight

Check your passport expiration date first. Your passport must be valid for the entire duration of your stay, and some countries require it to be valid for six months beyond your travel dates. If your passport expires soon, renew it before you explore for a visa or ESTA.

Next, confirm your citizenship on the Visa Waiver Program list. If you are on the list, register for ESTA at least 72 hours before your flight. If you are not on the list, contact the U.S. embassy or consulate in your country to start the visa process. Do this at least two to three months before your planned travel date, because processing can take time.

Do not assume you know the rules based on a previous trip. Rules change, and your circumstances may have changed. Check the official State Department website before you book anything.

Frequently Asked Questions

Can I get a visa at the airport if I forgot to explore?

No. Visas are issued only at U.S. embassies and consulates in your home country, not at airports or ports of entry. You must have your visa before you board your flight. If you did not explore in advance, you cannot travel.

What if my country is not on the Visa Waiver Program list but I only want to visit for a few days?

You still need a visa, regardless of how short your stay will be. There is no exception for brief visits. You must explore at your nearest U.S. embassy or consulate and wait for processing before you can travel.

Can I change my visa type after I arrive in the United States?

You can request a change of status while you are in the country, but it is complicated and not always possible. For example, if you arrived on a tourist visa and now want to study, you can ask to change to an F-1 student visa. However, you must do this before your current status expires, and the school must already have accepted you. It is much simpler to have the correct visa before you arrive.

Do I need a visa if I am just passing through the United States to another country?

If you are from a Visa Waiver Program country and you have a confirmed onward flight, you may be able to transit without a visa. However, you must still clear U.S. customs and immigration. If you are not from a Visa Waiver Program country, you need a transit visa or a regular visitor visa, even if you are only staying a few hours.

How long does a visa last once I have it?

A visa validity period (how long the visa itself is good for) is different from how long you can stay. Your visa might be valid for ten years, but you can only stay in the United States for the time period your visa allows — usually 90 days for a tourist visa. Once your allowed stay ends, you must leave, even if your visa is still valid.