柬埔寨电子签证申请中的入境口岸字段看似陷阱,但实则不然。以下是2026年作为美国公民应准确选择的机场、为何该选择比想象中影响更小,以及真正会导致费用修正的一个错误。

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.
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.
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 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.

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首次赴柬埔寨旅行?以下是面向美国人的诚实首次旅客清单——签证、美元货币特点、安全现状、疫苗接种、寺庙着装规范,以及2026年新机场的实际抵达体验。
自2025年6月以来,泰国与柬埔寨之间的全部七个陆地边境已关闭,因此在2026年,美国人从泰国进入柬埔寨的唯一方式是乘坐飞机。以下是曼谷至暹粒和曼谷至金边航线的工作方式、登机前所需的柬埔寨电子签证,以及为何旧的波贝陆路计划已不再可行。
三种方式跨越柬埔寨首都与吴哥窟之间的195英里:15美元的特快巴士、45分钟的航班或缓慢的河流渡轮。以下是每种方式对美国旅行者的实际费用、所需时间以及哪种适合您的行程。
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.

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.