One available option
PikoeSIM lists 1 GB for 7 days at $0.70. This is an available offer, not an overall price verdict.
Check this plan comparisonJapan · the price overview
Same trip. Same data.
Let’s see who wins.
Japan has 6 selected plan comparisons covering 1–20 GB. Recorded prices are available from PikoeSIM, Airalo, and Saily. There isn’t enough source information to name a winner across the four providers.
Data allowance
How we choose a winner YOUR DESTINATION
Japan
Some provider source pages were not supplied in this snapshot. The available prices are shown, but a four-provider verdict is unavailable.
01 / 06
1 GB for 7 days
For a little exploring.
Same allowance. Same duration.
| The details | PikoeSIMTravel eSIM | SailyTravel eSIM | AiraloTravel eSIM | NomadTravel eSIM |
|---|---|---|---|---|
| Plan priceOne-time price · USD | $0.70 | $3.99 | No exact match | Source not supplied |
| Data allowance | 1 GB | 1 GB | — | — |
| Valid for | 7 days | 7 days | — | — |
| Price per GB | $0.70 | $3.99 | — | — |
| Save with winnerCompared with this provider | — | — | — | — |
| Go to the source | View plans Observed (UTC) | View plans Observed (UTC) | Check provider Observed (UTC) | Source not supplied |
Price Verdict: Japan eSIM 1GB for 7 Days
A complete price verdict is unavailable.
This destination has partial source coverage, so the displayed prices do not establish a four-provider winner.
—price verdict unavailableSee the method
02 / 06
3 GB for 30 days
For maps, messages, and more.
Same allowance. Same duration.
| The details | PikoeSIMTravel eSIM | SailyTravel eSIM | AiraloTravel eSIM | NomadTravel eSIM |
|---|---|---|---|---|
| Plan priceOne-time price · USD | $2.00 | $7.99 | No exact match | Source not supplied |
| Data allowance | 3 GB | 3 GB | — | — |
| Valid for | 30 days | 30 days | — | — |
| Price per GB | $0.67 | $2.66 | — | — |
| Save with winnerCompared with this provider | — | — | — | — |
| Go to the source | View plans Observed (UTC) | View plans Observed (UTC) | Check provider Observed (UTC) | Source not supplied |
Price Verdict: Japan eSIM 3GB for 30 Days
A complete price verdict is unavailable.
This destination has partial source coverage, so the displayed prices do not establish a four-provider winner.
—price verdict unavailableSee the method
03 / 06
5 GB for 15 days
For your everyday travel essentials.
Same allowance. Same duration.
| The details | PikoeSIMTravel eSIM | AiraloTravel eSIM | SailyTravel eSIM | NomadTravel eSIM |
|---|---|---|---|---|
| Plan priceOne-time price · USD | $2.95 | $10.50 | No exact match | Source not supplied |
| Data allowance | 5 GB | 5 GB | — | — |
| Valid for | 15 days | 15 days | — | — |
| Price per GB | $0.59 | $2.10 | — | — |
| Save with winnerCompared with this provider | — | — | — | — |
| Go to the source | View plans Observed (UTC) | View plans Observed (UTC) | Check provider Observed (UTC) | Source not supplied |
Price Verdict: Japan eSIM 5GB for 15 Days
A complete price verdict is unavailable.
This destination has partial source coverage, so the displayed prices do not establish a four-provider winner.
—price verdict unavailableSee the method
04 / 06
5 GB for 30 days
For your everyday travel essentials.
Same allowance. Same duration.
| The details | PikoeSIMTravel eSIM | SailyTravel eSIM | AiraloTravel eSIM | NomadTravel eSIM |
|---|---|---|---|---|
| Plan priceOne-time price · USD | $2.99 | $10.99 | $11.00 | Source not supplied |
| Data allowance | 5 GB | 5 GB | 5 GB | — |
| Valid for | 30 days | 30 days | 30 days | — |
| Price per GB | $0.60 | $2.20 | $2.20 | — |
| Save with winnerCompared with this provider | — | — | — | — |
| Go to the source | View plans Observed (UTC) | View plans Observed (UTC) | View plans Observed (UTC) | Source not supplied |
Price Verdict: Japan eSIM 5GB for 30 Days
A complete price verdict is unavailable.
This destination has partial source coverage, so the displayed prices do not establish a four-provider winner.
—price verdict unavailableSee the method
05 / 06
10 GB for 30 days
For a trip with more online time.
Same allowance. Same duration.
| The details | PikoeSIMTravel eSIM | SailyTravel eSIM | AiraloTravel eSIM | NomadTravel eSIM |
|---|---|---|---|---|
| Plan priceOne-time price · USD | $5.00 | $17.99 | $18.00 | Source not supplied |
| Data allowance | 10 GB | 10 GB | 10 GB | — |
| Valid for | 30 days | 30 days | 30 days | — |
| Price per GB | $0.50 | $1.80 | $1.80 | — |
| Save with winnerCompared with this provider | — | — | — | — |
| Go to the source | View plans Observed (UTC) | View plans Observed (UTC) | View plans Observed (UTC) | Source not supplied |
Price Verdict: Japan eSIM 10GB for 30 Days
A complete price verdict is unavailable.
This destination has partial source coverage, so the displayed prices do not establish a four-provider winner.
—price verdict unavailableSee the method
06 / 06
20 GB for 30 days
For a bigger data budget.
Same allowance. Same duration.
| The details | PikoeSIMTravel eSIM | SailyTravel eSIM | AiraloTravel eSIM | NomadTravel eSIM |
|---|---|---|---|---|
| Plan priceOne-time price · USD | $8.55 | $24.99 | $25.00 | Source not supplied |
| Data allowance | 20 GB | 20 GB | 20 GB | — |
| Valid for | 30 days | 30 days | 30 days | — |
| Price per GB | $0.43 | $1.25 | $1.25 | — |
| Save with winnerCompared with this provider | — | — | — | — |
| Go to the source | View plans Observed (UTC) | View plans Observed (UTC) | View plans Observed (UTC) | Source not supplied |
Price Verdict: Japan eSIM 20GB for 30 Days
A complete price verdict is unavailable.
This destination has partial source coverage, so the displayed prices do not establish a four-provider winner.
—price verdict unavailableSee the method
The method behind the verdict
Clear prices.
Clear reasoning.
Greater eSIM calculates these price comparisons from collected provider listings. The results cover the four named providers and the matching plans shown.
One plan means one exact match.
Same destination, total GB, number of days, and USD currency. We include every combination shared by at least two providers in the collected fixed-data plans. Unlimited, daily-reset, regional, top-up, and voice/SMS plans are excluded.
The lowest recorded price wins.
At least two providers need a matching price, and all four source inventories must pass the snapshot checks for completeness and age. Ties share the lowest price. Verdict savings use the most expensive matching offer shown; the table gives the difference for every priced provider. Matching data and days does not establish equal network coverage, speed, or support.
Check the sources and dates.
Airalo, Saily, and Nomad prices come from their public country pages; PikoeSIM prices come from its public catalog. Source links open provider country pages, with original observation dates beside them. The snapshot was compiled 17 October 2026; collection times can differ. Prices may vary by location, promotion, taxes, or checkout. Other sales channels are outside this comparison.
Before you go
A few things you
might be wondering.
Who wins the eSIM price comparison for Japan eSIM?+
Japan has 6 selected plan comparisons covering 1–20 GB. Recorded prices are available from PikoeSIM, Airalo, and Saily. There isn’t enough source information to name a winner across the four providers.
How do you choose a winner?+
We include every data-and-validity combination shared by at least two providers in the collected fixed-data plans. For each destination, the lowest recorded USD price wins among the matching offers shown, with ties shared. We withhold verdicts when any of the four provider sources is missing or incomplete. These rankings cover only the named providers and matching plans.
Why do some cells say “No exact match” or “Not verified”?+
No exact match means the collected plans did not include that exact combination of data and days. Not verified means the source was incomplete, too old for the snapshot checks, or did not provide a usable price. Neither label proves a provider has no other plan.
Are these the prices I will pay?+
These are recorded public USD prices from the snapshot compiled 17 October 2026. The original observation date appears beside each source link. Promotions, visitor location, taxes, and checkout prices may differ. Check the provider page before buying.
Does the lowest price mean the best eSIM service?+
The verdict compares price for the stated data allowance and validity. It does not assess network coverage, speed, reliability, device compatibility, or customer support. Check those details with the provider before choosing a plan.
Who publishes these comparisons?+
Greater eSIM publishes the plan tables, price verdicts, and country summaries. They are calculated automatically from collected provider prices using the matching and ranking rules on this page. The source links identify the providers behind the recorded prices.