Best eSIM for Japan
We compared 27 eSIM plans for Japan from Airalo, Holafly, Saily, Nomad. Set your trip below to see the cheapest total price, or scroll down for the full price list.
Prices checked 28 September 2026
Best eSIM plans
Mobile data in Japan
Travel eSIMs in Japan usually run on SoftBank or KDDI (au), with good 4G and 5G in cities and along the main rail lines.
Fixed data plans are the cheapest choice for maps, messaging and browsing. If you use more than about 1.5 GB a day, compare the unlimited passes above.
All 27 plans for Japan
Sorted by data amount, then price. Prices in US dollars.
| Provider | Data | Validity | Price | Per GB |
|---|---|---|---|---|
| Saily | 1 GB | 7 d | $3.99 | $3.99 |
| Nomad | 1 GB | 7 d | $4.00 | $4.00 |
| Nomad | 3 GB | 30 d | $7.00 | $2.33 |
| Saily | 3 GB | 30 d | $7.99 | $2.66 |
| Nomad | 5 GB | 30 d | $10.00 | $2.00 |
| Saily | 5 GB | 30 d | $10.99 | $2.20 |
| Nomad | 10 GB | 30 d | $16.00 | $1.60 |
| Saily | 10 GB | 30 d | $17.99 | $1.80 |
| Nomad | 20 GB | 30 d | $23.00 | $1.15 |
| Saily | 20 GB | 30 d | $24.99 | $1.25 |
| Nomad | 50 GB | 30 d | $35.00 | $0.70 |
| Nomad | Unlimited | 3 d | $11.00 | |
| Airalo | Unlimited | 3 d | $11.50 | |
| Holafly | Unlimited | 3 d | $11.90 | |
| Airalo | Unlimited | 5 d | $17.00 | |
| Holafly | Unlimited | 5 d | $20.50 | |
| Nomad | Unlimited | 7 d | $25.00 | |
| Airalo | Unlimited | 7 d | $26.50 | |
| Holafly | Unlimited | 7 d | $27.50 | |
| Airalo | Unlimited | 10 d | $34.50 | |
| Holafly | Unlimited | 10 d | $36.50 | |
| Nomad | Unlimited | 14 d | $41.00 | |
| Airalo | Unlimited | 15 d | $48.00 | |
| Nomad | Unlimited | 21 d | $49.00 | |
| Holafly | Unlimited | 15 d | $50.50 | |
| Airalo | Unlimited | 30 d | $69.00 | |
| Holafly | Unlimited | 30 d | $73.90 |
Japan eSIM questions
What is the cheapest eSIM for Japan?
In our check on 28 September 2026, the cheapest plan was 1 GB for 7 days from Saily at $3.99. For a 7-day trip with moderate use (about 5.6 GB), the lowest total was $14.00 with Nomad.
Do I need unlimited data in Japan?
Only if you stream video, make long video calls or share a hotspot. A 7-day unlimited option costs from $25.00, while 10 GB costs from $16.00.
Which network will my eSIM use in Japan?
Travel eSIMs in Japan usually run on SoftBank or KDDI (au), with good 4G and 5G in cities and along the main rail lines.
When should I install the eSIM?
Install it at home over Wi-Fi a day or two before you fly, and switch it on when you land. Keep your home SIM on for calls and SMS if you need them.