On this page 7 sections
Our method in one line
We read each provider's official plan pages on 4 November 2026 and restated the facts in our own words. We did not buy or speed-test these plans, so we make no claims about real-world speed or reliability.
Best for, in short
Saily or Nomad
Small fixed plans are the cheapest way in: about $4 for 1 GB in Japan.
Holafly or Airalo
Unlimited-day packages for Japan are priced within a dollar or two of each other.
Nomad
Its free 1 GB trial is the lowest-risk way to test the process.
Saily or Nomad
Both advertise hotspot support; avoid plans with tight hotspot caps.
The 30-second summary
| Airalo | Nomad | Saily | Holafly | |
|---|---|---|---|---|
| Plan style (Japan) | Unlimited-day packages shown on Japan page; regional and global options | Fixed-data plans (1–50 GB) plus "unlimited" day plans | Fixed-data plans (1–20 GB) plus unlimited day plans | Unlimited data by number of days |
| Cheapest Japan plan listed | $11.50 3 days unlimited | $4 1 GB / 7 days | $3.99 1 GB / 7 days Lowest listed | $11.90 3 days unlimited |
| 7-day unlimited, Japan | $26.50 | Offered; see official page | Offered (priced per day count) | $27.50 |
| 30-day unlimited, Japan | $69.00 Lowest listed | Not listed on page we checked | $71.99 | $73.90 |
| Unlimited fair-use rule | Check package details | Speed drops to 1 Mbps after daily high-speed allowance | 5 GB/day full speed, then 1 Mbps | Fair Usage Policy may reduce speed for up to one day; hotspot sharing 1 GB/day |
| Notable extra | Top-ups and auto-renewals | Free 1 GB trial for new users | Optional US number; security features | "Always On" 1 GB/month backup data |
Prices in USD as displayed on each provider's official Japan page, checked 4 November 2026. Prices can differ by currency, promotion and app vs. website.
The four providers
Airalo
- Japan from
- $11.503 days unlimited
- 30 days unlimited
- $69.00Japan page
- Network (Japan)
- SoftBank, plus other partners
What stands out
Breadth of destinations (its site says more than 30 million people have chosen it, across 200+ locations with local, regional and global eSIMs), an app in 53 languages, top-ups on an existing eSIM, and optional auto-renewals when 10% of data remains. The Japan page also points to regional Asia packages "from $4.00" and global ones "from $8.50".
What to watch
If you enable renewals, turn them off after your trip. Look at the full package details for fair-use terms on unlimited options.
Nomad
- Japan from
- $41 GB / 7 days
- Fixed ladder (30 days)
- 3 GB $7, 5 GB $10, 10 GB $16 (sale, from $18), 20 GB $23 (sale, from $26), 50 GB $35
- Unlimited rule
- 1 Mbps after the daily high-speed allowance
What stands out
Good value per gigabyte at larger sizes, regional bundles (Asia-Pacific, China-Japan-Korea, Global), add-on data that activates automatically when the first plan ends, and a free 1 GB trial for new users. Its help center is candid: most plans are data-only, and speeds depend on the local partner network.
What to watch
Nomad says a plan auto-activates 60 days after purchase if you haven't started it, so buy close to your trip.
Saily
- Japan from
- $3.991 GB / 7 days
- Unlimited (Japan)
- $71.9930 days; 15 days $48.99
- Unlimited rule
- 5 GB/day at full speed, then 1 Mbps
What stands out
From the team behind NordVPN. Japan plans of 3, 5, 10 and 20 GB for 30 days ($7.99 to $24.99), a 180-day window to activate after purchase, one eSIM that can hold plans for many destinations, hotspot sharing, and built-in privacy features (virtual location, ad blocking, web protection). Optional US phone number with call and text plans.
What to watch
One FAQ on its Japan page describes the $3.99 plan as "Unlimited GB over seven days", while the plan list shows 1 GB. We believe the plan list is correct, but check at checkout.
Holafly
- Japan from
- $11.903 days unlimited
- 30 days unlimited
- $73.90Japan page
- Networks (Japan)
- KDDI and SoftBank
What stands out
The simplest approach: choose your days, get unlimited data. Every eSIM includes "Always On", a 1 GB monthly backup allowance in 150+ countries for as long as the eSIM stays installed. 24/7 chat support, and a refund policy that covers cancelled trips and incompatible phones (its Europe page mentions up to six months to request a refund).
What to watch
Hotspot sharing is limited to 1 GB per day, an installed eSIM can't be reinstalled or transferred, and plans don't work in your home country (including the whole EU for EU residents). Operators may temporarily reduce speeds under a fair-usage policy.
Which one fits you?
- Light users on short trips (maps, messaging, a few photos): a small fixed plan from Saily or Nomad is the cheapest way in, at around $4 for 1 GB.
- Heavy users who hate counting gigabytes: Holafly's or Airalo's unlimited-day packages are priced within a dollar or two of each other for Japan. Compare the exact trip length.
- Tethering a laptop: avoid plans with tight hotspot caps; Saily and Nomad both advertise hotspot support.
- Multi-country trips: look at regional plans; all four sell them.
- First-timers who want to test the process: Nomad's free trial is the lowest-risk start.
What about Ubigi, Maya and Yesim?
They're credible alternatives that we plan to cover in future updates. We didn't verify their current prices for this article, so we're not quoting numbers. Yesim's low-cost trial is covered in our trials guide.
Affiliate links. Prices are set by the provider and confirmed at checkout.
Frequently asked questions
Which provider is cheapest for Japan?
For the smallest plan, Saily listed 1 GB for 7 days at $3.99 and Nomad at $4 (checked 4 November 2026). For 30 days of unlimited data, Airalo listed $69.00, Saily $71.99 and Holafly $73.90.
Did you test these eSIMs?
No. We summarize what each provider publishes on its official pages and link to every source. We don't publish speed tests or hands-on claims we didn't perform.
Which one has a free trial?
Of these four, Nomad offers a free 1 GB trial for new users. See our trials guide for the details and catches.
Can I share data with a laptop?
Saily and Nomad both advertise hotspot support. Holafly limits hotspot sharing to 1 GB per day.
Sources and method
Last checked 4 November 2026
All prices and plan facts on this page were read from these official pages on 4 November 2026. We have not purchased or tested these plans ourselves; we summarize what the providers publish, in our own words. Read our method.
- Airalo — Japan eSIMsChecked 4 November 2026
- Nomad — Japan eSIMChecked 4 November 2026
- Nomad Help Center — Is Nomad eSIM legit and any good?Checked 4 November 2026
- Saily — eSIM for JapanChecked 4 November 2026
- Holafly — eSIM for JapanChecked 4 November 2026
- Holafly — eSIM for EuropeChecked 4 November 2026