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In a hurry? Airalo vs Klook eSIM at a glance:
- Choose Airalo if one of its set unlimited plans (3, 5, 7, 10, 15 or 30 days) fits your trip, or if you’d like one store that also sells eSIMs for other countries.
- Choose Klook if you want to pick any trip length from 1 to 30 days, choose data per day or data in total, and keep tours and tickets in the same app.
- Hotspot: Klook lists hotspot sharing as supported. Airalo’s Japan page doesn’t say, so check the plan details.
- Price: compare the same number of days and the same data type on both, on the day you buy.
If you’re choosing between Airalo and Klook for your Japan eSIM, this Airalo vs Klook eSIM comparison shows how they differ. Both let you install an eSIM on your phone before you fly, and both list SoftBank as a network in Japan. The differences are in how the plans are built, what “unlimited” means, and what else each company offers. This guide compares the two using what each company says on its own Japan eSIM page, so you can pick the one that fits your trip.
Airalo vs Klook eSIM: side-by-side comparison
| Airalo | Klook | |
|---|---|---|
| Network in Japan | SoftBank, plus one other network | SoftBank 5G (data per day) or Docomo 4G LTE (data in total) |
| Trip lengths | Unlimited plans for 3, 5, 7, 10, 15 or 30 days | Any length from 1 to 30 days |
| Data options | Unlimited and fixed-data plans | Data per day or data in total; options include unlimited and set amounts from 500MB to 50GB |
| Unlimited-plan speed limit | Not confirmed; check the plan details | 10 GB a day at full speed, then 128 kbps |
| Hotspot | Not stated on the Japan page | Supported |
| When the plan starts | Not stated on the Japan page | When the eSIM connects to a network at your destination |
| Extra data | Top-ups available in many cases | Add data linked to your eSIM; unused data can go to a Data Bank for your next trip (app only) |
| Where you buy | Airalo website | Klook app |
Based on each company’s Japan eSIM page in September 2026. Plans and prices change, so check the current details before you buy.
How Airalo’s Japan eSIM works
Airalo is an eSIM store, and its Japan page lists SoftBank as the main network, plus one other network. The unlimited-data packages come in set lengths. When we checked from Japan in September 2026, prices were shown in yen: ¥1,850 for 3 days, ¥2,750 for 5 days, ¥4,300 for 7 days, ¥5,550 for 10 days, ¥7,750 for 15 days and ¥11,100 for 30 days. Airalo also sells fixed-data plans.
You can install the eSIM whenever you like, as long as you have a stable internet connection, and Airalo says that in many cases you can top up instead of buying a new eSIM. Its Japan page doesn’t say when a plan’s validity period starts or whether hotspot is allowed, so read the plan details before you buy. If you travel often, you can buy eSIMs for other countries from the same store.
How Klook’s Japan eSIM works
Klook is a travel booking platform that also sells a Japan eSIM, which you buy in its app. You choose a package type (data per day or data in total), any trip length from 1 to 30 days, and a data amount: unlimited, or one of the set amounts from 500MB to 50GB. Klook lists SoftBank 5G for data-per-day plans and Docomo 4G LTE for data-in-total plans.
Klook’s unlimited plans give you 10 GB a day at full speed, then slow to 128 kbps. Hotspot sharing is supported, and you can add more data if you run out. Klook says usage and validity only start when the eSIM connects to a network at your destination, so you can install it before you fly. You install it through the Klook app, by scanning a QR code, or by entering the details manually. Any unused data can go into Klook’s Data Bank for your next trip, on the app only.
Klook also sells tours, attraction tickets and airport transfers, so you can book your data and the rest of your trip in the same app. If your eSIM hasn’t connected yet, you can cancel for a full refund. If you have problems after it connects, Klook may give a full or partial refund depending on how much data you’ve used, at its own discretion.
How to compare prices fairly
Prices change often, and the two are sold differently: Airalo shows its package prices on its website, while Klook shows the price for your chosen package in its app. To compare them fairly:
- Match the trip length. Airalo’s unlimited plans come in set lengths, so if your trip is 8 or 12 days, you may need to size up. Klook lets you pick the exact number of days.
- Match the data type. Compare unlimited with unlimited, or a fixed amount with a similar fixed amount. Klook says its unlimited plans slow down after 10 GB a day. We couldn’t confirm Airalo’s limits, so check its plan details too.
- Check on the day you buy. Both prices can change, so compare them when you’re ready to book.
Airalo or Klook? Which to choose
- Your trip length isn’t one of Airalo’s set options (8, 12, 20 days…): Klook lets you choose the exact length.
- You need to share data with a laptop or tablet: Klook lists hotspot sharing as supported. For Airalo, check the plan details first.
- You’re already booking tours or tickets on Klook: keep your eSIM in the same app.
- You travel to several countries a year: Airalo also sells eSIMs for many other countries.
- You want to see the price on a website before installing an app: Airalo lists its Japan package prices on its site.
Either way, first check that your phone supports eSIM and isn’t locked to a carrier. On an iPhone, go to Settings > General > About: next to Carrier Lock it should say “No SIM Restrictions”.
Frequently asked questions
Is Airalo or Klook cheaper for Japan?
It depends on the trip length and data type, and prices change. Compare the same number of days and the same kind of plan on both when you’re ready to buy.
Which network do they use in Japan?
Airalo lists SoftBank plus one other network. Klook lists SoftBank 5G for data-per-day plans and Docomo 4G LTE for data-in-total plans.
When does the plan start?
Klook says usage and validity start when the eSIM connects to a network at your destination. Airalo’s Japan page doesn’t say, so check the plan details before you install.
Can I keep my home number?
On supported iPhone models, yes. According to Apple, you can have two eSIMs active at the same time, one for your home number and one for the country you’re visiting.
Final thoughts
Airalo and Klook both get you online in Japan with an eSIM you install before you fly. Klook gives you more ways to build a plan and lists hotspot support; Airalo gives you set unlimited packages with prices on its website, from a store that also covers other countries. Pick the one that matches your trip length and how you like to book.
Still comparing? Our comparison of Airalo, Ubigi and Klook adds Ubigi to the mix, and our eSIM setup guide walks you through installing it.