A visa is official permission from a country to enter, stay in or pass through it for a set time and a set purpose. Whether you need one depends on your passport, where you are going and why. The only reliable way to know is to check the destination's official government pages before you book.
This guide explains what a visa is, what it looks like, the main types and how to apply. It also covers the pre-travel permits that are often mistaken for visas, such as the UK ETA.
What is a visa?
A visa is a document, sticker, stamp or electronic record that lets you enter, stay in or leave a country for a limited period. It is tied to a purpose, such as tourism, business, study or work. Each country sets its own rules, so the same passport can be visa-free in one country and need a visa in the next.
Many countries also have visa-free access for certain passports, usually for short visits. Even then, you may need a passport with enough validity and proof that you will leave again. Wondering how far your passport goes? See the most powerful passports in the world.
What does a visa look like?
It depends on the country. Many visas are a sticker in your passport. Others are a stamp, or an electronic record linked to your passport number that you print or save on your phone. Typical details include:
- Visa number: a unique reference.
- Your details: name, passport number and nationality, often a photo too.
- Visa type: the purpose of your visit, such as tourist, business or student.
- Validity dates: when you can enter and when the visa ends.
- Number of entries: single, double or multiple.
- Issuing authority: the government body or embassy that issued it.
Always check every detail when you receive it. A wrong name or date can cause problems at the border.
Types of visas
Visas are named after the reason you travel. Names differ by country, but these are the most common:
- Tourist or visitor visa: for holidays, sightseeing and visiting family or friends. Work is usually not allowed.
- Business visa: for meetings, conferences and negotiations.
- Student visa: for people enrolled on a course. It often lasts as long as the course.
- Work visa: for people employed abroad. It usually needs an employer to sponsor you.
- Transit visa: for passing through a country on the way to another one.
- Medical visa: for treatment abroad.
- Family visa: for joining relatives who live in the country.
- Residence visa: for people who plan to live in the country long term.
- Diplomatic or official visa: for government officials and diplomats.
- Humanitarian visa: for refugees and people who need protection.
The UK shows how this looks in practice. Its Standard Visitor visa covers tourism, family visits and business meetings. A Student visa is for a licensed course. A Skilled Worker visa needs a job offer from an approved employer. A transit visa covers passing through, depending on whether you go through border control.
Visa, ETA or ETIAS: what is the difference?
Some countries ask visa-free travellers to get an online travel permit before they fly. It is not a visa, but it can still stop you boarding if you skip it.
- UK ETA: an electronic travel authorisation that, according to GOV.UK, lets you travel to the UK for up to 6 months. It is not a visa and does not guarantee entry. Most visitors from Europe, the USA, Australia and Canada usually need one. Apply only through the official GOV.UK page, because other sites may charge more.
- EU ETIAS: an online authorisation planned for visa-free visitors to the Schengen area. The European Commission says it applies six months after the Entry/Exit System (EES) is fully in place. See the EU visa policy page for the current status.
How to check if you need a visa
- Use official sources only. Go to the destination government's immigration site, the embassy or consulate, or your own government's travel advice. For example, GOV.UK has foreign travel advice for 226 countries and territories, with entry requirements on each page, and a tool to check if you need a UK visa.
- Know your passport and purpose. Rules depend on the nationality of your passport and why you travel: tourism, business, study or work.
- Check how long you will stay. Short visits are often visa-free. Longer stays usually need a visa.
- Check your passport. In the Schengen area, GOV.UK says your passport must have been issued less than 10 years before you arrive and be valid for at least 3 months after you plan to leave. Other countries have different rules, so check each one.
- Check layovers too. Some countries ask for a transit visa even if you never leave the airport. Your airline can tell you which one applies.
Be careful with third-party "visa services". Some copy official sites and charge extra. Start from a government address.
How to apply for a visa
The steps vary, but most applications look like this.
1. Pick the right visa
Choose the type that matches your purpose. A tourist visa will not let you work, and using the wrong one can get a later application refused.
2. Read the requirements
The official site lists what you need. Common items are:
- A valid passport with enough blank pages.
- The completed application form.
- Recent passport photos that meet the country's rules.
- Proof of travel plans, such as flight bookings.
- Proof of where you will stay, such as a hotel booking or an invitation letter.
- Proof you can pay for your trip, such as bank statements.
- Documents for your visa type, such as a job contract for a work visa or an acceptance letter for a student visa.
- Travel insurance, a health certificate or a police certificate, if the country asks for them.
3. Apply and pay the fee
Many countries take applications online. Some need you to visit a visa centre, embassy or consulate to give your fingerprints or attend an interview. Fees depend on the country and visa type, so check the official page.
4. Wait for the decision
Processing times vary widely. Apply early, and don't buy non-refundable flights until you have your visa.
5. Check your visa
When it arrives, check your name, passport number, dates and number of entries. Keep a copy on your phone and a printout in your bag.
Tips for a smooth application
- Start early. Give yourself plenty of time in case of delays or extra document requests.
- Be honest. Wrong or false information can lead to a refusal or a ban.
- Double-check documents. Missing pages and mismatched names are common causes of delays.
- Stay within the visa conditions. Respect the dates, the purpose and the length of stay. For the Schengen area, the Commission says visa holders may stay up to 90 days in any 180-day period.
- Save copies offline. Keep scans of your passport, visa and bookings on your phone and in cloud storage. See what to do if your passport is lost or stolen abroad.
Get your phone ready before you travel
Border officers and airlines sometimes ask for a hotel address, a return ticket or an online form. Having mobile data when you land makes it easy to open booking emails, fill in arrival forms and message your host. A travel eSIM gives you data without paying roaming fees, and you can install it before you fly.
Heading to Europe? A data-only Europe eSIM works across Europe. Check your phone is eSIM-compatible first, see how to check eSIM compatibility, then follow our eSIM install guide.
Data-only plans for Europe · 5 GB, 10 GB or 20 GB · See all Europe eSIMs · Going elsewhere? Find your destination
Planning more of your trip? Read our guide to preparing your phone for international travel and the traveler's checklist. Dreaming of a longer trip? Learn how to travel the world and get paid for it.
FAQs
What is a travel visa?
A travel visa is permission from a country to enter, stay in or pass through it for a set purpose and time. It can be a sticker or stamp in your passport, or an electronic record.
How do I know which visa I need?
It depends on your passport, destination and reason for travel. Check the destination government's official site or embassy. Your own government's travel advice pages also list entry requirements.
How do I get a visa?
Choose the right visa type, read the official requirements, gather your documents, apply online or at an embassy, pay the fee and wait for the decision. Some applications also need fingerprints or an interview.
What documents do I usually need?
A valid passport, an application form, photos, travel and accommodation proof, proof of funds and documents for your visa type. The exact list is on the official site of the country you visit.
How long does it take to get a visa?
It varies by country and visa type, from quick online decisions to several weeks. Official sites list their current processing times. Apply as early as the rules allow.
How much does a visa cost?
Fees differ by country, visa type and sometimes your nationality. Only trust the fee shown on the official government site, and avoid sites that add extra charges.
Do I need an interview?
Some countries ask for an interview, usually at an embassy or consulate. Others process applications online without one. Your application page says which applies.
Is an ETA the same as a visa?
No. An ETA, like the UK one, is an electronic travel authorisation for visitors who don't need a visa. It does not guarantee entry.
Is a visa guaranteed once I apply?
No. Authorities can refuse an application if requirements are not met. Applying early leaves time to fix problems.
Do I need a visa for a layover?
Sometimes. Some countries require a transit visa even if you stay in the airport, depending on your passport and whether you go through border control. Check with your airline and the official site.
