A visa run to Moc Bai from Da Nang takes two days and runs about $80–120 round trip: a night sleeper down to Saigon, the local 703 bus to the border, a $30 cash visa for Cambodia, and a fresh Vietnam stamp back the same afternoon. Here’s exactly how I did it, what I handed over at each booth, and the one spot where the guard tried to charge me more.

One thing up front: Moc Bai is the Vietnamese side, and the Cambodian post across from it is called Bavet. From Da Nang it’s not a quick hop — the crossing sits roughly 70 km northwest of Saigon, so every route to it starts by getting yourself south first.

Why Moc Bai is the crossing most expats pick

Of the land borders, Moc Bai is the busiest and the smoothest. It’s paved, air-conditioned on the Vietnam side, and the queues actually move. Next to the horror stories from other Southeast Asian land crossings, this one is calm. Da Nang folks heading to Laos usually use Lao Bao instead, and if you’re down on Phu Quoc, Ha Tien is closer — but if Cambodia is your exit and you want the easiest stamp, Moc Bai is the one.

Ho Chi Minh City bus station

Quick reality check for 2026: Vietnam’s 90-day multiple-entry e-visa, live since 2023, means a lot of people don’t need a border run at all anymore. I make the trip when I’m on a single-entry visa that’s about to expire, or when I want to reset my stay cleanly.

Getting from Da Nang down to the border

Two real options. A night sleeper bus to Saigon — around seventeen hours, cheap, and you sleep through most of it. Or a one-hour flight that costs more but saves your back. I took the bus, boarded in the evening, woke up in the south.

Moc Bai border crossing at night

From Saigon’s bus station you grab city bus 703. It runs straight to Moc Bai, takes about two and a half hours, and the ticket is pocket change — roughly 40,000 dong. The first 703 out of Saigon leaves at 05:40 and the last at 19:15, every 30 to 60 minutes. Coming back, buses from the border start around 08:30, so go early.

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Best Bus handles pickup, the border crossing, and your new e-visa — door-to-door from Da Nang.

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Step-by-step: crossing Moc Bai in a single day

  1. Catch the 703 at Saigon bus station early — it drops you at the border in about 2.5 hours.
  2. Walk to the checkpoint. It’s a five-to-ten-minute stroll, so wave off the motorbike touts.
  3. Clear the Vietnam exit booth and get your departure stamp.
  4. At Bavet, fill the English arrival card and slip exactly $30 in small bills into your passport.
  5. Collect your visa, confirm both stamps are there, and step into Cambodia for all of two minutes.
  6. Turn around, clear Vietnam entry, and ride the 703 back to Saigon.
Passport with visa stamps

The Cambodian side and the $32 trick

Here’s the quirk. The Cambodian visa is $30 if you write a Cambodian address on the card, and $32 if you leave it blank. It makes no sense, but the officer won’t budge. I wrote down a real address I pulled off my phone and paid the thirty. Lesson: break your dollars into small bills before you go, because change from a big note rarely comes back.

Cambodia border gate vintage

On the way out, check your passport for two Cambodian stamps — one oval, one octagonal. If you only got one, you’ll be sent back to the line. Hints about paying a couple of dollars to “speed things up” do happen; if you’re not in a rush, you wait your turn and pay nothing extra. You’ll spot a building marked Casino right at Bavet — locals can’t gamble at home, so the border does the job.

Timing it right: bus hours and the holiday trap

The 703 runs all day, but the smart move is going early so you’re not racing the last bus back. Avoid April 30 — Vietnam’s Reunification Day. Prices on the Saigon sleepers jump around that date; my return ticket cost more purely because of the calendar.

Small US dollar bills for visa fee

A quick prep checklist before you go

  • Passport with blank pages, plus a clear plan for your Vietnam re-entry visa
  • A stack of small US dollars — singles and fives — for the $30 Cambodia visa
  • A fresh e-visa printout if you’re not on a multiple-entry visa
  • A phone with data for the address card and the bus maps
  • Snacks and patience for the long Saigon legs

Questions before you go? I’m happy to help: