Traveling to Sapa, Vietnam: The Complete Guide to Currency Exchange and SIM Cards at Hanoi Airport

To be honest, I thought Sapa had an airport. It just seemed like you'd have to fly right in to see those magnificent terraced rice fields.

But the moment I stepped into Hanoi's Noi Bai International Airport, my naive plan shattered. I opened Google Maps and checked the route to Sapa, only to find it was over a five-hour drive. My mind went blank. Ah, so Sapa is quite a ways from Hanoi. I'd have to take a bus or train for several more hours. In that moment, what stressed me out more than the humid air that hit me as I deplaned was the problem of currency exchange and a SIM card.

I needed to contact the sleeper bus company I'd booked to confirm the pickup location, but I had no data. To even get to the bus, I needed to call a Grab, but I didn't have a single Vietnamese Dong (VND). Clutching a wad of US dollars from home and a smartphone that was no better than a brick without Wi-Fi, I felt completely defenseless, stranded in the middle of a foreign airport.

Ultimately, travelers arriving at Hanoi Airport, especially those like me heading straight to another city like Sapa, face an immediate choice: opt for 'convenience' and sort everything out at the airport, or choose 'efficiency' to save a little money and head into the city first. It struck me that this small decision could affect not just the next five hours, but the entire mood of my Sapa trip. At the airport, the starting point of any journey, I had to get the first step right.

Hanoi Airport Currency Exchange: Is It the Right Choice?

The feeling of helplessness from the previous chapter eased slightly as I exited the arrivals hall. My view was filled with a long line of currency exchange and SIM card booths with green and yellow signs on either side. It was as if they were saying, 'Don't worry, get everything you need right here before you go!' Each booth had a flashing electronic board displaying exchange rates, but after a quick look, I saw they were all more or less the same. It's wiser to just pick one that feels right and get it done quickly rather than spending minutes shopping around.

Of course, the conventional wisdom in travel communities is clear: airport exchange rates are the worst, and you should go to a gold shop in downtown Hanoi, specifically on Ha Trung Street in the Old Quarter or near Hoan Kiem Lake, for the best rates. This isn't wrong. In fact, when exchanging $100, the difference between the airport and a city gold shop can be anywhere from 50,000 to 70,000 VND. That's the price of one or two strong Vietnamese coffees ('ca phe sua da') or a couple of banh mi sandwiches. But I willingly gave up those two coffees and chose to exchange at the airport. Why? Because I decided that exchanging at the airport is paying for 'time' and 'peace of mind.'

Think about it. You're saving the energy you would have spent dragging a heavy suitcase through a chaotic swarm of motorbikes in a new city, all while searching for a gold shop with a slightly better rate. I wanted to have usable Vietnamese Dong (VND) in my hand right away. The immediate freedom to buy a cold bottle of water when I was thirsty or call a Grab to rush to my pre-booked bus to Sapa was far more valuable to me.

So, I exchanged just $100. At the time, that was a little over 2.3 million VND, which turned out to be the perfect amount. It was enough to cover the taxi fare to the bus terminal in Hanoi (about 300,000-400,000 VND), the sleeper bus ticket to Sapa (about 250,000-300,000 VND), and a simple dinner and snacks (about 150,000 VND), with plenty of emergency cash left over. Unless you're exchanging your entire travel budget, I highly recommend changing a small amount at the airport to save yourself mental and temporal energy at the start of your trip.

One more tip: when you get your money at the exchange counter, be sure to ask for a mix of denominations (Mix paper, please!). If you only get the largest 500,000 VND notes, it can be inconvenient to buy something small like a bottle of water from a small shop or street vendor. That moment, holding the confusingly zero-heavy Vietnamese Dong for the first time and calmly counting each bill at the counter—that was the real start of my Vietnam adventure.

SIM Card: Buy at the Airport or in Advance?

After tucking my newly filled wallet into my pocket, the SIM card shops right next door caught my eye. I had seriously considered buying and activating an eSIM from home. Many reviews on travel platforms said that eSIMs were a few dollars cheaper than airport SIMs. However, just as with the currency exchange, I opted for the safer route: buying it on the spot.

The reason was simple: I wanted to avoid any potential issues. What if something went wrong during the eSIM activation and I couldn't get a data connection? The airport Wi-Fi is slow and unreliable, and I didn't want to deal with a complicated problem right after landing in a foreign country. In contrast, the airport SIM card shop solves all these worries in just five minutes. You just hand over your phone, and the staff will carefully remove your old SIM, tape it somewhere safe so you don't lose it, insert the new one, and confirm that you have a data signal. This convenience was far more valuable to me than saving a few dollars.

At the beginning of a trip, your greatest assets aren't money, but time and peace of mind. Buying a SIM at the airport was the surest way to secure both.

In the arrivals hall of Hanoi Airport, booths for Vietnam's major carriers—green Viettel, blue Mobifone, and yellow Vinaphone—line up to greet travelers. It might seem like you have many options, but the best choice is usually clear depending on your travel style.

Since my destination was Sapa, I headed straight for the Viettel booth without hesitation. The staff asked about the length of my trip and showed me a few plans. Tourist plans are typically structured as follows:

• Data-focused Plans: Around $10-$15. Most offer 4-5GB of high-speed data per day for 30 days, with unlimited use at a slower speed after the daily cap is reached. It's practically unlimited.
• Plans with Calls: These are $2-$3 more expensive than data-only plans and include several dozen minutes of local calls within Vietnam. Worth considering if you expect to make frequent calls to local restaurants or hotels.

I only needed data, so I chose the $12 '5GB per day' plan. The employee took a photo of my passport (ID registration is mandatory for SIM activation in Vietnam) and swiftly swapped out the SIM card. I was able to check KakaoTalk messages and maps without any issues, even while trekking in remote villages around Sapa. I couldn't have made a more satisfying choice. (You can check more detailed plans in advance on the official Viettel Tourist SIM page.)

Conclusion: Practical Tips for Travelers

For anyone planning a trip to Sapa who might feel overwhelmed at Hanoi Airport, here are a few practical tips. Just remembering these will make the start of your journey much smoother.

First, Sapa does not have an airport. All your initial preparations must be done either at Hanoi's Noi Bai Airport or in Hanoi city. When booking sleeper buses or train tickets to Sapa, make sure they depart from Hanoi.

Second, for currency exchange, I recommend changing only the minimum amount you'll need immediately at the airport (around $50-$100). You can always exchange more later at banks or exchange counters in Sapa town if needed. There are places in Sapa with decent rates.

Third, buy your SIM card at the airport without hesitation, especially if it's your first time in Vietnam. Viettel is highly recommended for its excellent coverage in mountainous terrain. You'll need data to call a Grab and find your way around.

Fourth, when you exchange money, always count it again right at the counter. It's best for both you and the staff if you check each bill in front of them. The currency has a lot of zeros, making it easy to get confused, so stay sharp.

Finally, install the Grab app and register your credit card before you leave home. It will be incredibly useful for getting from the airport to the city or a bus terminal as soon as you activate your new SIM.