Buying a Vietnam eSIM on Airalo costs more than it needs to. We put both sites' published prices side by side, plan for plan.
On 9 matching plans altesim.com came out cheaper than Airalo, by 35% to 70%.
How we compared
Both columns are the prices each site published on 11 September 2026, listed in US dollars. We used each site's actual selling price, not a struck-through list price.
Every comparison uses altesim.com's full price, ignoring the 10% site-wide discount it runs one day in three — the strictest reading against ourselves.
A "matching plan" means the same number of days and the same data allowance, with per-day plans compared only against per-day plans.
A detailed comparison: How altesim.com and Airalo differ
| Plan | altesim.com | Airalo | You save |
|---|---|---|---|
| 7 days · 10GB total | US$6.06 | US$17 | 64% |
| 15 days · 10GB total | US$6.28 | US$17.5 | 64% |
| 30 days · 10GB total | US$6.5 | US$18 | 64% |
| 15 days · 20GB total | US$8.7 | US$28 | 69% |
| 30 days · 20GB total | US$8.92 | US$29 | 69% |
| 7 days · 5GB total | US$3.4 | US$10 | 66% |
| 30 days · 5GB total | US$7.2 | US$11 | 35% |
| 30 days · 50GB total | US$16.83 | US$49 | 66% |
| 7 days · 3GB total | US$2.36 | US$8 | 70% |
When comparing the prices of eSIMs for Vietnam, we found that altesim.com offers 9 plans that are cheaper than Airalo, with savings ranging from 35% to 70%. The most striking difference is in the "3GB total" plan, where altesim.com charges US$2.36 compared to Airalo's US$8, a saving of 70%. As the duration increases, the savings decrease slightly. For example, in the "10GB total" plan, the 7-day option is 64% cheaper on altesim.com, and the 30-day option is also 64% cheaper, with the savings remaining consistent. This pattern holds for other data capacities as well; for instance, the "5GB total" 7-day plan is 66% cheaper, while the 30-day plan is 35% cheaper. Therefore, if you're planning a trip to Vietnam, choosing altesim.com's plans can save you a significant amount of money, especially for shorter trips.
How to use a data pool plan without running out midway
With a data pool plan, you don't need to track your data usage daily. On days when you use more data, you can consume more without worrying about exceeding your limit. During a trip to Vietnam, the most data-intensive activities include using navigation, uploading photos, streaming videos, or live-streaming. To estimate how much data you might need, consider the following: If you mainly use Wi-Fi at your accommodation and occasionally check maps or communicate, 1GB per day should be sufficient. If you frequently use navigation, upload photos, and watch some videos, you might need between 5GB and 10GB for a week. If you share your hotspot with friends or stream videos and live streams regularly, you might need around 20GB for 10 days. With altesim.com's daily plans, once your high-speed data is used up, the speed reduces to 128kbps, allowing you to continue using data without interruption, and the high-speed data resets the next day.
The variety of options on altesim.com's Vietnam page
altesim.com's Vietnam page offers 235 plan options, ranging from 1 day to 365 days. These plans are divided into data pool and daily plans. Data pool plans are ideal for those who don't want to track their data usage daily, while daily plans suit those with consistent daily usage. Additionally, altesim.com offers multi-country plans that cover Vietnam as well. The entire altesim.com platform features over 2,000 plans across 84 destinations, providing a wide range of choices.
How much data do you actually need in Vietnam? Three itineraries to consider
When traveling in Vietnam, choosing the right plan based on your itinerary is crucial. Itinerary A: If you mainly use Wi-Fi at your accommodation and occasionally check maps or communicate, the "10GB total" plan should be sufficient. Itinerary B: If you frequently use navigation, upload photos, and watch some videos, the "20GB total" plan would be more appropriate. Itinerary C: If you share your hotspot with friends or stream videos and live streams regularly, the "50GB total" plan would be the best choice. How much data might these itineraries use? Itinerary A might use around 1GB per day, Itinerary B could use between 5GB and 10GB for a week, and Itinerary C might need around 20GB for 10 days. It's important to note that the duration of your trip will affect your choice of plan; for longer trips, opting for a plan with a larger data pool is advisable.
The advantages of altesim.com
altesim.com offers several conveniences and benefits. Opening an account is free, and buying ten eSIMs will earn you an extra one for free. Although altesim.com uses US dollars for pricing, you can choose to pay in your local currency at checkout, which is convenient for travelers from different countries. In Vietnam, altesim.com's plans use the Viettel and Vinaphone networks, supporting 5G networks and allowing you to share your hotspot, ensuring you can enjoy high-speed internet wherever you go.
Three things to do before purchasing
Before making a purchase, there are three things you must do. First, check if your phone supports eSIM; recent iPhones, Samsung Galaxy S series, and Google Pixel phones do, but older models and some mainland Chinese versions need to be verified. Second, check if it's a 10% off day; if it is, you can save an additional 10%. Third, revisit the destination page to confirm the current price, as prices on all platforms can change at any time. By taking these steps, you can make a confident purchase and enjoy a pleasant trip to Vietnam.
Prices are as published on 11 September 2026 and can change at any time; check the page on the day you buy.