What documents do I need to travel internationally?
For international travel you need a passport, possibly a visa, proof of onward travel, accommodation, sufficient funds, and country-specific entry forms.
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The universal international travel checklist
Every country has slightly different rules, but the core set of documents you will need for international travel is fairly consistent. Get these together before you book your trip1 hotel and head to the airport:
- A passport that meets your destination's validity rule, often 3 or 6 months beyond your stay.
- A visa or electronic travel authorization (if your destination requires one).
- Proof of onward or return travel - usually a flight ticket.
- Proof of accommodation - a hotel booking confirmation from trip1 works.
- Proof of sufficient funds for the duration of your stay.
- Travel insurance documents (mandatory for some destinations).
- Vaccination certificates (yellow fever required for some African and South American countries).
- An International Driving Permit (IDP) if you plan to drive.
- Two printed copies of your itinerary, kept separately from your passport.
Pre-travel authorizations to know about
Many countries have replaced traditional visas with electronic pre-clearance for visa-exempt nationals. Common ones include ESTA (USA), ETIAS (Schengen, planned for the last quarter of 2026), ETA (Canada, UK, Australia), and the K-ETA (South Korea).
These authorizations cost from a few dollars to around USD 40 (Canada's eTA is CAD 7, the UK ETA GBP 20 and the US ESTA USD 40.27, rising to USD 40.62 from 16 October 2026) and are usually approved within minutes, but always apply at least a few days before your trip to avoid delays.
Health and insurance documents
Some countries require proof of yellow fever vaccination if you are arriving from a country where the disease is present. Others, including all Schengen countries for visa applicants, require travel insurance with minimum medical coverage.
Even when not required, travel insurance is worth carrying - medical emergencies abroad can be very expensive. Keep digital and printed copies of your policy.
Documents for your trip1 hotel check-in
Hotels worldwide expect the same passport you used at immigration plus your trip1 booking confirmation. Many countries require hotels to register foreign guests with local authorities - they handle this automatically.
What documents do I need to travel internationally - FAQ
A valid US passport is the core document. Depending on where you go, add a visa or electronic travel authorization, a return or onward ticket, proof of accommodation such as your trip1 booking confirmation, and proof of funds. Some countries also require travel insurance or a yellow fever certificate. Passport validity rules differ, and many countries want 3 to 6 months left.
Yes, once it starts. ETIAS is the planned travel authorization for visa-exempt visitors to 30 European countries, which includes US citizens. It is not in operation yet and no applications are being taken, so you need nothing extra for Europe today. The planned fee is 20 euros, and the EU will announce the start date several months ahead.
No date has been set. The official ETIAS website says the system is not in operation and that the EU will announce the start date several months before launch. Until then no traveler needs an ETIAS, and any website selling one today is not official. Watch the EU's Travel to Europe website for the announcement.
Two recent changes matter most for US travelers. Europe's Entry/Exit System now records fingerprints and a facial image the first time you enter the Schengen Area, replacing passport stamps. The UK now requires US visitors to hold an Electronic Travel Authorisation, which costs 20 pounds. At home, REAL ID has been required for domestic flights since 7 May 2025.
No. Many countries let US citizens visit visa-free for short tourist trips, and others use an electronic authorization you apply for online, such as the UK's ETA or Australia's ETA. A smaller group requires a traditional visa before you travel. Check each destination's requirements early, because some applications take weeks.