Which Airport to Choose on Your Cambodia eVisa Application (US Citizens)

The KTI airport-code change that confuses Americans

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.

Does the airport you pick lock you in?

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.

The one mistake on this field that actually costs you

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.

• Do select one of the three international airports: Techo International / Phnom Penh (KTI), Siem Reap-Angkor (SAI), or Sihanouk International (KOS).
• Do not build a route that depends on a Thailand land crossing — all seven have been closed since June 2025 and an eVisa cannot be used there in 2026.
• Do not panic over a connection change; the eVisa is valid for three months from issue and is not locked to a single listed airport.
• Do match the airport you select to your actual first landing in Cambodia, so your visa record and your boarding pass tell the same story.
• Do file your separate e-Arrival Card in the 7 days before you fly — that is where your arrival details are confirmed in full.

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.

Pick your airport and move on

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.