Buying a SIM in Vietnam — counters, queues and what to pay

The short answer

You can buy a SIM the moment you land. Every major international airport in Vietnam sells them — Noi Bai, Tan Son Nhat, Da Nang, Cam Ranh and Phu Quoc — and city shops sell them everywhere else. You will need your passport, and you will pay more at the airport than in town.

If your phone takes an eSIM, you can skip the whole exercise and land already connected.

At the airport: who is there, and how long you wait

Cam Ranh and Phu Quoc also sell SIMs on arrival, though we do not hold carrier-by-carrier detail for those two.

Twenty minutes at Noi Bai is the worst case on this list, and it is worth knowing before you decide whether to queue after a long-haul flight. Da Nang is the quickest of the three.

One thing the queue length does not tell you is which network you end up on, and in Vietnam that matters more than the wait. Viettel has the widest rural and remote coverage and is the only carrier that holds up in the Sapa highlands, on the Ha Giang Loop and out on Ha Long Bay. All three airports above have a Viettel desk. If your trip goes north, join that one specifically.

In the city, and what it should cost

City stores charge 250,000 to 350,000 VND, roughly $10 to $14. Airport kiosks charge 350,000 to 400,000 VND, roughly $14 to $16. So walking out of arrivals and buying in town saves you something in the region of 100,000 VND.

Our country data also records a typical airport tourist package at about $7, which is well below those kiosk quotes. We are not going to pretend the two figures agree. What is consistent across everything we hold is the direction — airport kiosks cost more than city shops — and the sensible way to use this page is to treat $7 as the floor, $16 as the ceiling, and to check what data allowance is actually attached to whatever you are offered.

The passport rule

Registration requires a passport, at airport counters and city stores alike. This is Vietnamese regulation rather than shop policy, so there is no counter that will skip it and no point arriving without the document. The staff will scan it and register the SIM to you before it works.

International eSIMs are the exception. They carry no local registration requirement, which is the second reason travellers choose them after price.

Wifi will carry you until you decide

You do not have to solve this in the arrivals hall. Public wifi in Vietnam is genuinely good — near universal and free across Da Nang, Hanoi and Ho Chi Minh City, and reliable in airports, hotels, restaurants and cafes. It is enough to message home, call a car and reach your accommodation.

That gives you the option of landing, connecting to airport wifi, and buying an eSIM on the spot without joining any queue at all.

Or buy before you fly

The cheapest verified Vietnam eSIM in our data is Saily's 1GB over seven days at $3.99, with Airalo's Xin Chao package at $4 for 1GB over three days just above it, checked on 13 August 2026. Airalo does not publish which Vietnamese network that package uses, so if your trip goes north into the mountains or out on the water, a local Viettel SIM remains the only way to be sure of your coverage.

An eSIM installs before departure, activates on landing, needs no passport scan and involves no counter. The trade is that you need a compatible handset — iPhone XS or newer, and most recent Android flagships. Check eSIM-compatible phones if you are unsure, and see the Vietnam hub for the full plan and coverage comparison.