The port-of-entry field on your Cambodia eVisa application looks like a trap, but it is not. Here is exactly which airport to select as a US citizen in 2026, why the choice matters less than you think, and the one mistake that actually does cost you a fix.
Select the international airport where your flight first touches down in Cambodia. For most Americans that is Techo International near Phnom Penh (KTI), which replaced the old Phnom Penh airport on September 9, 2025. If you are flying straight into the temples, choose Siem Reap-Angkor International (SAI); for the southern coast, choose Sihanouk International (KOS). Do not select any Thailand land border — all seven have been closed since June 2025. The good news: this field is not a hard lock. Your eVisa is a single-entry document valid for three months from issue with a 30-day stay, and that holds whichever of the three listed airports you actually arrive through.
Somewhere in the middle of the Cambodia eVisa application, US citizens hit a dropdown asking for the port of entry — the airport or crossing where you will arrive in Cambodia. It is the field that makes people stop and second-guess. What if I pick the wrong one? What if my connection changes? What if I do not even have my flights booked yet? Take a breath. This is one of the lowest-stakes fields on the whole form, and once you see how it actually works, it takes ten seconds.
Here is the short version. The port-of-entry field tells Cambodian Immigration where to expect you, but your eVisa is not chained to that exact airport the way a flight booking is chained to a seat. The document is single-entry, valid for three months from the date it is issued, and good for a 30-day stay — and those terms travel with you to any of Cambodia's three international airports. The field exists for arrival logistics, not as a gate that slams shut if your itinerary shifts.
This guide walks through the exact options you will see, which one to pick for each kind of trip, the airport-code change that confuses Americans booked before September 2025, and the one genuine mistake on this field that does cost you a correction. When you are ready, you can apply and most US travelers clear the whole form in under ten minutes. If you want the wider picture first, our guide to which Cambodia entry points accept your eVisa maps every airport, border, and port in one place.
When the port-of-entry dropdown opens, you are looking for one of three international airports. These are the only air gateways that accept an eVisa for US citizens in 2026, and they map cleanly onto where most Americans are actually headed. Pick the one your inbound flight lands at first — not your final destination city, the first Cambodian airport your plane touches.
This is the right answer for the large majority of US travelers. If you are flying into the capital — for the city itself, for business, or as a hub before connecting onward to Siem Reap or the coast — Techo International is your port of entry. It opened on September 9, 2025 and took over all commercial traffic from the old Phnom Penh field. On the form it may appear as Phnom Penh, Techo, or Techo International, sometimes with the code KTI. They all mean the same airport. Choose it.
Choose this if your inbound flight lands directly in Siem Reap, the gateway to the Angkor temple complex. Plenty of Americans fly straight in here from a regional hub like Bangkok, Singapore, or Seoul and skip the capital entirely. If Angkor Wat at sunrise is the reason for the trip and your ticket says Siem Reap, this is your port of entry — not Phnom Penh.
Choose this if you are flying directly to Sihanoukville for the southern coast and the islands — Koh Rong, Koh Rong Sanloem, and the beach scene. Direct international service into KOS is thinner than the other two, so most coast-bound Americans actually arrive through Phnom Penh and continue by road or domestic hop. If that is you, select Phnom Penh / Techo International, because that is where you clear Immigration.
Notice what is not on this list: any Thailand land border. There is no valid option to pick a Thai crossing, because all seven Thailand-Cambodia land borders have been closed since June 2025 and an eVisa cannot be used to enter that way in 2026. If your plan involved a bus from Bangkok across to Siem Reap, that route is off the table this year — read our breakdown of whether the Cambodia-Thailand land border is open for Americans before you build a route around it.
The single most common point of confusion on this field is the airport-code change at Phnom Penh. On September 9, 2025, the old Phnom Penh International Airport closed to commercial flights and Techo International took over, carrying the new code KTI. If you booked your trip earlier — or you are reading older guides — you may still see the previous Phnom Penh code on your ticket or in your head. They point to the same place for practical purposes: the airport you will actually fly into is Techo International.
So if the eVisa dropdown shows Phnom Penh, Techo, Techo International, or the code KTI, that is the option to choose for any capital arrival. If you ever see an old Phnom Penh code lingering in a third-party booking tool, do not let it throw you — your flight has already been moved to the new field by your airline, and selecting Phnom Penh / Techo International on the eVisa form is correct. There is no separate option you are missing.
The practical upshot at the airport: Techo International is a brand-new facility with a different layout, a longer transfer into the city, and its own e-Arrival kiosk row. None of that affects which option you pick on the visa form, but it does affect your arrival day. If you want a sense of where each Cambodian airport accepts the eVisa and what the arrival flow looks like, the entry-points guide for US citizens lays out the full map of accepted gateways.
This is the question behind all the second-guessing, so here is the plain answer: no, the port-of-entry field is not a hard lock. Your eVisa is a single-entry document valid for three months from the date of issue, with a 30-day stay once you enter. Those terms are what govern your entry — not the precise airport you ticked weeks earlier on a dropdown. If you select Phnom Penh / Techo International and your plans later shift you to a direct Siem Reap flight, your eVisa is still a valid eVisa.
What the field really does is set an expectation for Cambodian Immigration about where you intend to arrive, and it keeps your record consistent across the visa and the arrival systems. The smart move is simply to pick the airport that matches your booked or most-likely first landing. You do not need confirmed flights to apply, and you do not need to obsess over getting it perfect — pick the airport that fits your plan today.
A few honest caveats, because precise is better than reassuring. Always select one of the three accepted international airports — never a closed land crossing, and never a city that is not on the list. Keep the choice sensible: if you are genuinely arriving in Siem Reap, choose Siem Reap, not Phnom Penh, so your record lines up with your boarding pass. And remember the field on the visa is mirrored, in more detail, on the separate e-Arrival Card you file before you fly. To see how the two forms fit together, walk through our step-by-step Cambodia eVisa application guide for Americans.
For all the worry about the port-of-entry dropdown, the field itself rarely causes a problem when you pick one of the three accepted airports. The mistake that genuinely costs US applicants a correction is different: selecting an entry point your eVisa cannot be used at, then building a whole trip around it. The classic 2026 version is choosing — or assuming — a Thailand land crossing.
Picture the plan: fly into Bangkok cheaply, take a bus or shared taxi east, cross into Cambodia by land, and ride on to Siem Reap. It was a popular budget route for years. In 2026 it does not work, because all seven Thailand-Cambodia land borders have been closed since June 2025. An eVisa will not get you across, the crossing is not a valid option on the form, and travelers who only discover this at the border lose far more than a form correction — they lose a travel day and a plan.
If your route really does need to involve Thailand this year, fly the Cambodia leg instead of crossing by land — book a flight into one of the three accepted airports and your eVisa works exactly as intended. For everything else that quietly trips Americans up on the form, our roundup of the Cambodia eVisa application mistakes to avoid is worth five minutes before you submit.
Here is the whole thing in one line: choose the international airport where your plane first lands in Cambodia, and keep moving. For most US travelers that is Phnom Penh / Techo International (KTI); for a direct temple trip it is Siem Reap-Angkor (SAI); for a direct coast trip it is Sihanouk International (KOS). The Tourist eVisa is $80 USD all-in and the Business eVisa is $90 USD all-in, both approved in 3 business days and delivered as a printable PDF by email. Once that decision is made, you are 90 seconds from done on this part of the form.
One reminder before you fly. The visa is one form; the e-Arrival Card is a different, mandatory form for every air arrival; and both ask where you are landing. The visa application happens now, the e-Arrival happens within 7 days before departure, and matching the airport across both keeps your arrival day clean. Our guide to filling out the Cambodia e-Arrival Card for US citizens walks through every field so the two records line up.
Next steps and related reading for Americans: apply for your Cambodia eVisa when you are ready to lodge, bookmark our Cambodia visa hub for US citizens as the single canonical reference, check which Cambodia entry points accept the eVisa to confirm your gateway, and review the application mistakes to avoid before you submit.
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캄보디아의 수도와 앙코르왓 사이의 195마일을 이동하는 세 가지 방법: $15 익스프레스 버스, 45분 비행기, 또는 느린 강 페리. 각 옵션이 미국 여행자에게 실제로 얼마인지, 얼마나 걸리는지, 그리고 어떤 여행에 적합한지 알려드립니다.
