Benötigen US-Bürger ein Visum für Kambodscha? Was Amerikaner 2026 wissen müssen

How long US citizens can stay, and the validity window

The Cambodia eVisa gives you a 30-day stay from the day you enter the country. That is a calendar count, not business days, and it includes your arrival day and your departure day. For a typical American trip — a week or two split between Phnom Penh, Siem Reap, and the coast — 30 days is comfortably more than you need.

The number that trips people up is the validity window, which is different from the stay. Your eVisa is valid for 3 months from the date it is issued, not from the date you enter. So if you apply in January and your visa is issued the same week, you must enter Cambodia by roughly mid-April. Enter on the last valid day and you still get your full 30-day stay from that entry. The practical rule: do not apply so far ahead that the visa expires before your trip. A few weeks out is the sweet spot.

What your US passport needs to look like

Your US passport must have at least 6 months of validity remaining from your date of entry into Cambodia, and at least one full blank page for the entry stamp. This is the single most common reason an American trip gets derailed before it starts — not a visa problem at all, but a passport that expires inside the 6-month window. The airline checks this at your departure gate in the United States and will deny boarding if your passport is too close to expiry, long before you ever reach a Cambodian immigration officer.

Run the math now, not at the airport. If your passport expires in September and you are flying out in July, you are inside the 6-month window and you will be turned away. US passport renewals through the State Department take time — routine service can run several weeks, and even expedited service is not instant — so if you are close to the line, renew before you book anything else. A blank page also matters: if your passport is full of stamps from frequent travel, count your clean pages before you fly.

Where your eVisa works: airports, borders, and the 2026 changes

Two big things changed in 2026 that directly affect how Americans should plan their entry into Cambodia, and both push you toward arriving by air. Get this right and your eVisa works smoothly; get it wrong and you can find yourself at a closed crossing with a visa you cannot use.

First, the airport. Phnom Penh now flies into KTI — Techo International Airport — which replaced the old PNH airport on 9 September 2025. If you are flying into the capital, your inbound ticket and your e-Arrival card should reflect the new airport. Siem Reap (for Angkor Wat) and Sihanoukville (for the coast) also accept eVisa arrivals, so most American itineraries are well served by air.

Second, the land borders. All 7 Thailand–Cambodia land borders have been closed since June 2025. That means the classic backpacker move of busing from Bangkok into Cambodia overland is not an option in 2026, and any itinerary that assumed an overland Thailand–Cambodia leg needs rerouting through a flight. If your plan was Thailand first and Cambodia second by road, you now fly that leg instead. Your eVisa is valid at the international airports; it cannot be used at a closed land crossing.

The second form Americans forget: the e-Arrival card

Here is the step that catches even well-prepared travelers: the eVisa is not the only thing you file. Every air arrival into Cambodia also completes a Cambodia e-Arrival card, which is a separate form from your visa. It is 14 fields covering your flight, your accommodation, and a customs declaration, and you submit it within 7 days before your arrival. Filing it through us is $5 USD and checked end-to-end before it reaches Cambodian Immigration, so a single date-format slip does not bounce you at the kiosk.

Think of it as two forms with two jobs. The eVisa answers "may this person enter Cambodia?" and is arranged now, weeks ahead. The e-Arrival card answers "here are this person's arrival details" and is filed in the final week before you fly. Both are mandatory for air arrivals in 2026, and the travelers who plan for both at the start are the ones who walk through the airport without a hitch.