Where the SIM counters are at Noi Bai
Noi Bai has two terminals. International flights use Terminal 2 (T2); domestic flights use Terminal 1 (T1).
- T2 arrivals hall is where most travellers land, and it is where the carrier-branded SIM counters sit, alongside currency exchange and the taxi desks.
- T1 serves domestic arrivals, with a smaller set of shops and kiosks.
- Counters are landside — after immigration and baggage reclaim, in the public arrivals area.
Because you pass them on the way out, buying at the airport is convenient. It is rarely the cheapest option, and it is the option most exposed to your flight time: land at 02:00 and you may find the shutters down.
What a tourist SIM at the airport typically costs
Prices move, and each carrier and reseller sets its own. As a working range for planning:
| What you buy | Typical airport price | Notes |
|---|---|---|
| Short tourist SIM, small data bundle | from about 200,000 VND | Usually 7–15 days validity |
| Tourist SIM, larger data bundle | about 300,000–500,000 VND | 30 days is common |
| eSIM bought online before you fly | set by the store, in USD | No counter, no queue |
| SIM bought in central Hanoi | often cheaper than the airport | Costs you a trip into town |
Treat those figures as a planning range, not a quote. The exact price depends on the carrier, the data allowance and the validity period printed on the pack. Ask to see the pack and the validity before you pay, and confirm whether the price includes the SIM itself or only the top-up.
Opening hours: the practical risk
Airport SIM counters generally follow the terminal's busy periods rather than a fixed nationwide schedule. In practice, most are open through the day and into the evening, and many close overnight.
If your flight lands in the small hours, plan for the possibility that nothing is open:
- Check your arrival time before you fly. A daytime landing makes an airport purchase straightforward.
- Have a fallback. Either buy an eSIM in advance, or plan to pick up a SIM in central Hanoi the next morning.
- Don't rely on airport Wi-Fi for everything. It is useful for a first message home, but it is not a substitute for mobile data while you are out in the city.
Airport counter vs eSIM vs waiting for the city
| Option | Best for | Trade-off |
|---|---|---|
| Buy at a Noi Bai counter | Travellers who land in the daytime and want a local number immediately | Queue, airport pricing, closed overnight |
| Buy a Vietnam eSIM before departure | Anyone landing late, or anyone who wants data the moment they switch the phone on | Needs an eSIM-capable, unlocked phone |
| Buy in central Hanoi | Longer stays and price-sensitive travellers | No data between the airport and the city |
If you are weighing the eSIM route, check that your handset supports eSIM and is carrier-unlocked before you buy — our phone compatibility page covers how to check. Installation and activation steps are in the help centre, including what to do if the profile does not appear the first time.
What to check before you pay at a counter
A short checklist saves most of the problems people report after buying a SIM at an airport:
- Validity. Confirm the number of days in writing on the pack, and when the clock starts.
- Data allowance. Ask whether the bundle is a daily cap or a total allowance.
- The phone number. A local number is useful for restaurant bookings and for drivers; confirm the SIM comes with one.
- Registration. Vietnamese prepaid SIMs are registered to a user, so expect to show your passport.
- Top-ups later. Ask how to add credit once the bundle runs out, and whether that can be done from the phone.
- Keep the pack. The carrier name and plan details on the packaging are what you will need if you have to ask for help.
If you would rather skip the counter
An eSIM removes the two things that make the airport purchase awkward: the queue and the opening hours. You buy it online, install it before you travel, and it is ready when you land. The trade-off is that eSIMs are data-first — if you specifically need a Vietnamese phone number for calls, a physical SIM from a counter is the more direct route.
You can compare options and buy the Vietnam eSIM before your flight. If you have already ordered, the order lookup handles the common questions about an existing purchase.
Arriving in Hanoi: the first hour
Once you have data, the rest of the arrival is easier: ride-hailing apps work, maps load, and you can message your accommodation. If you land at T2, the taxi and bus desks are in the same arrivals area as the SIM counters, so it is possible to sort both in one pass — but only if your flight lands during counter hours.
For everything else about staying connected in Vietnam, the help centre collects the setup and troubleshooting guides in one place.