Buying a Taiwan eSIM on Airalo costs more than it needs to. We put both sites' published prices side by side, plan for plan.
On 1 matching plans altesim.com came out cheaper than Airalo, by 46% to 46%.
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 does altesim.com stack up against Airalo?
| Plan | altesim.com | Airalo | You save |
|---|---|---|---|
| 7 days · 10GB total | US$9.45 | US$17.5 | 46% |
In this comparison, altesim.com offers a Taiwan eSIM plan that is cheaper than Airalo, with savings reaching up to 46%. The plan with the biggest savings is the "7 days 10GB total" option, priced at US$9.45 on altesim.com compared to US$17.5 on Airalo. This is a significant difference of US$8.05. For travelers heading to Taiwan, if you plan to use 10GB of data, the altesim.com plan is a very cost-effective choice. For instance, if you are visiting Taiwan for a week and mainly use data for maps and staying in touch with friends, the altesim.com plan would be ideal, allowing you to save money for enjoying more Taiwanese cuisine.
How to use a data cap plan without running out of data midway
The advantage of a data cap plan is that you don't have to track your daily data usage, allowing you to use data more freely on days when you need it more. For example, if you are traveling in Taiwan and have Wi-Fi at your accommodation for the first few days, using minimal data for maps and communication, you can save more data for the later days of your trip. What activities consume the most data? Activities like using navigation, uploading photos, streaming videos, or live streaming can quickly use up data. How to estimate how much data you need? If you mainly use maps and communication, 1GB per day should be sufficient. If you frequently use navigation, upload photos, and watch some videos, around 5GB to 10GB for a week should be enough. If you share a hotspot with friends or stream videos and live streams often, you might need around 20GB for a 10-day trip.
What options are available on altesim.com's Taiwan page?
altesim.com's Taiwan page offers 107 plans to choose from, including multi-country plans that cover Taiwan. The duration of these plans ranges from 1 day to 365 days, providing a wide range of choices. These plans are divided into data cap and daily plans. A data cap plan gives you a total data allowance to use at any time within the validity period, while a daily plan provides a fixed amount of data each day. Additionally, some plans cover multiple locations, including Taiwan. altesim.com offers a total of 2,303 plans across 84 destinations, offering a vast array of choices.
How much data do you actually need in Taiwan? Three itineraries to consider
The first itinerary is Itinerary A: If you are visiting Taiwan and mainly use Wi-Fi at your accommodation, using data only for maps and communication, then this itinerary will likely use about 1GB of data per day. The "7 days 10GB total" plan mentioned above would be very suitable. The second itinerary is Itinerary B: If you frequently use navigation, upload photos, and watch some videos, this itinerary will likely use about 5GB to 10GB for a week. The "7 days 10GB total" plan would also be appropriate. The third itinerary is Itinerary C: If you share a hotspot with friends or frequently watch videos and live streams, this itinerary might use around 20GB for a 10-day trip. The "7 days 10GB total" plan would not be sufficient, and you would need to choose a larger plan. It's important to note that different itineraries require different amounts of data, so choose a plan that suits your travel plans.
What are the advantages of altesim.com?
altesim.com has several benefits worth mentioning. Firstly, you can buy up to 10 eSIMs on a single order, allowing you and your travel companions to handle all eSIMs in one go. Secondly, every 3 days, there is a 10% discount across the site, allowing you to buy then and save more money. Thirdly, opening an account is free, and members who buy ten eSIMs get one free, so after a few purchases, you can get a free eSIM.
Three things to do before buying
Before making a purchase, there are a few things you need to do. Firstly, 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 checked. Secondly, see if the current day is a 10% discount day; if so, you can save an additional 10%. Thirdly, once on the destination page, double-check the current price, as prices on all platforms can change at any time. If you take care of these three things, you can buy the cheapest eSIM and travel to Taiwan with peace of mind.
Prices are as published on 11 September 2026 and can change at any time; check the page on the day you buy.