Vietnam from the USA: one nonstop, a $25 visa, and how to spend two weeks well

The short answer

Americans need a visa, and it is the straightforward kind. Apply at evisa.gov.vn for 25 dollars, up to 90 days single or multiple entry, approved in three to five working days. Passport valid six months beyond arrival with two blank pages.

For the flight, there is exactly one nonstop from the United States: Vietnam Airlines, San Francisco to Ho Chi Minh City, roughly sixteen hours, three or four times a week, from about 600 dollars. There is no nonstop to Hanoi, which matters more than it sounds if the middle of the country is where you are headed.

1

nonstop route from the US

~16h

San Francisco to Saigon

$25

e-visa, up to 90 days

One nonstop, and why it may not be your best option

Vietnam Airlines flies San Francisco to Saigon nonstop in about fifteen hours forty to sixteen fifty, three or four times a week, fares from around 600 dollars. It is the only nonstop between the two countries and it is a genuinely good option if you live in the Bay Area and your trip starts in the south.

For everyone else, connecting is normal and often better. Tokyo, Seoul and Taipei are the efficient Pacific hubs from the West Coast, and ANA, Korean, Asiana, EVA and China Airlines all sell through fares. From the East Coast, Doha, Istanbul and Dubai are frequently cheaper and land you further north.

The reason connections matter here is where they put you. There is no nonstop US service to Hanoi, and Phong Nha sits about 500km south of Hanoi in the middle-north of the country. If you land in Saigon, you are adding a domestic flight to get anywhere near it. A one-stop itinerary into Hanoi or Da Nang can save you a whole travel day.

The e-visa, and the two things that delay it

Go to evisa.gov.vn. That is the government portal and it charges the government fee, 25 dollars single entry or 50 multiple, valid up to 90 days, good at all 83 land, sea and air entry points. There is a substantial industry of lookalike sites that rank well on search and charge four or five times as much for the identical form, so check the address bar before typing a passport number.

The photo is the first thing that delays applications. Blurry, cropped, or shot against a cream wall pushes it into manual review and turns three days into ten. Use a plain white background and look straight at the camera.

The name is the second. Your entry must match the machine-readable strip at the bottom of your passport photo page exactly, character for character, including middle names you normally omit and any hyphens. Apply two to three weeks out and none of this will ever be your problem.

Two weeks of vacation, spent properly

Most Americans are working with ten to fifteen days, not the month a European takes. That changes the planning problem entirely: you are not seeing Vietnam, you are choosing which Vietnam to see, and the standard Hanoi, Halong, Hoi An, Saigon loop eats all of it in transit.

Phong Nha is the argument for cutting something. It sits between Hanoi and Hue, holds the largest cave on earth and a few hundred others, and it is the one stop on the map where you do something rather than photograph something: sleep underground, swim through a river cave, abseil into a collapsed doline.

If your two weeks are going to produce one story you tell for years, this is where it comes from. Trading Halong Bay, which is a boat and a crowd, for three nights in a cave town is the single best swap available on a short Vietnam trip.

Thanksgiving is the trap

February to April is the sweet spot in Phong Nha: dry, warm without being punishing, everything open. Spring Break lands right inside it, which is the best week the American calendar offers here. May through August is genuinely good for caves and brutal outside them, which covers summer vacation.

September to November is flood season. The wet caves, Phong Nha Cave and Dark Cave, often close. Roads get cut. Trips are cancelled at short notice and you are owed a refund rather than a vacation. The expedition caves, Son Doong and Hang En among them, run roughly January to August only.

Thanksgiving week is therefore the worst possible use of the long weekend, and it is exactly when a lot of Americans take their Asia trip. The Christmas and New Year break is much better than people assume: December is drying out, Hang En reopens mid-month, and January is genuinely good.

What the trip actually costs

The flight dominates: 700 to 1,400 dollars round trip depending on season, coast and whether you connect. The visa is 25 dollars. Compared to what a comparable adventure trip costs inside the US, the rest of this is close to free.

On the ground the numbers are hard to believe the first time. A good double room in Phong Nha is 15 to 30 dollars. Street food is 2 to 4 dollars a meal. A scooter is about 4 dollars a day. The caves are the real spending: about 11 dollars to walk into Paradise Cave unguided, around 31 dollars for a day swimming through Tra Ang, around 310 dollars for two days and a night inside Hang Pygmy.

A realistic two-week trip from the US, mid-range, with two or three serious cave days, lands around 2,200 to 3,200 dollars per person all in. Prices checked September 2026.

Your health insurance almost certainly stops at the border

Most US health plans cover little or nothing overseas, and Medicare covers essentially nothing outside the country. Whatever your employer plan does at home, assume it does not apply in a Vietnamese provincial hospital, and buy a real travel medical policy.

The clause that matters is adventure activities. Standard policies exclude abseiling, rope work and caving, or cap them at a level that is decorative rather than useful. Read the actual certificate wording, not the marketing page, and check the medical evacuation limit specifically. Evacuation out of central Vietnam to Bangkok or Singapore runs well into six figures if you are paying for it yourself.

This is not hypothetical. Hang Pygmy includes a ten-metre abseil. Kong Collapse opens with a hundred-metre drop into a sinkhole. The operators run serious safety teams and the record is good, but you are hours from a hospital that can handle a real injury.

The bottom line

Americans pay the most in flight time and the least in flexibility, which makes choosing well more important here than for anyone else. One nonstop, none of it to Hanoi, and two weeks to work with.

Get the week right, avoid Thanksgiving, connect into Hanoi or Da Nang rather than defaulting to Saigon, and spend three of your nights in Phong Nha with one cave that scares you slightly. That is the trip people actually remember.