Airwaily
eSIM comparisons
Cheapest & Best Japan eSIMs: Top 9 Providers Compared
Nine Japan eSIM providers compared on listed USD prices, allowances and validity, from 1 GB weeks to 50 GB months, with the cheaper rival offers named.
The dated comparison tables below reflect the observation date recorded for each figure and are not a guarantee of current pricing.
How this Japan eSIM comparison works
I compared stored US-dollar listings from nine providers — Airwaily, Airalo, Saily, Nomad, MobiMatter, Ubigi, Jetpac, Yesim and GigSky — band by band, stating each plan's data allowance and validity together. Airwaily publishes this comparison and sells one of the products in it. Japan plans here are fixed totals, not daily refills, so a 5 GB allowance over 10 days and the same 5 GB over 30 days are different purchases.
Cheapest Japan eSIM with exactly 1 GB
Eight providers listed a 1 GB Japan plan; Jetpac had none. Airwaily's 1 GB over 7 days at $0.76 was lowest, well below GigSky's promotional $2.39 week and Saily's $3.59.
| Provider | Allowance | Validity | Listed price |
|---|---|---|---|
| AirwailyCountry-specific Japan plan | 1 GB | 7 days | $0.76 |
| AiraloMulti-country · includes Japan | 1 GB | 3 days | $3.60 Regular $4.00 Promo †Offer conditionsRecorded code: ESIMDB10 · Excluded methods: Airmoney, Apple Pay, Google Pay, PayPal · No stacking · Other eligibility unconfirmed |
| Saily | 1 GB | 7 days | $3.59 Regular $3.99 Promo †Offer conditionsRecorded code: ESIMDB10 · First purchase only · No stacking · Other eligibility unconfirmed |
| NomadMulti-country · includes Japan | 1 GB | 7 days | $4.00 |
| MobiMatterMulti-country · includes Japan | 1 GB | 14 days | $3.99 |
| UbigiMulti-country · includes Japan | 1 GB | 1 day | $1.80 Regular $2.00 Promo †Offer conditionsRecorded code: ESIMDB10 · One use per customer · Other eligibility unconfirmed |
| Jetpac | — | — | No matching offer |
| Yesim | 1 GB | 30 days | $3.30 Regular $4.13 Promo †Offer conditionsRecorded code: ESIMDB20 · First purchase only · Other eligibility unconfirmed |
| GigSky | 1 GB | 7 days | $2.39 Regular $2.99 Promo †Offer conditionsRecorded code: GSKYES20 · One use per customer · No stacking · Other eligibility unconfirmed |
Airwaily's $0.76 week is 78.8% below Saily's $3.59 for the same 1 GB and 7 days, and 81% below Nomad's $4.00 week. Allowance and validity match in both pairs, so these are like-for-like price gaps.
Cheapest Japan eSIM with exactly 5 GB
All nine providers had a 5 GB plan. Jetpac's $2.00 1-day bundle was the lowest listed, then Airwaily's 5 GB over 10 days at $2.77 and MobiMatter's 5 GB over 15 days at $5.49.
| Provider | Allowance | Validity | Listed price |
|---|---|---|---|
| AirwailyCountry-specific Japan plan | 5 GB | 10 days | $2.77 |
| Airalo | 5 GB | 7 days | $9.00 Regular $10.00 Promo †Offer conditionsRecorded code: ESIMDB10 · Excluded methods: Airmoney, Apple Pay, Google Pay, PayPal · No stacking · Other eligibility unconfirmed |
| Saily | 5 GB | 30 days | $9.89 Regular $10.99 Promo †Offer conditionsRecorded code: ESIMDB10 · First purchase only · No stacking · Other eligibility unconfirmed |
| Nomad | 5 GB | 30 days | $10.00 |
| MobiMatter | 5 GB | 15 days | $5.49 |
| Ubigi | 5 GB | 15 days | $9.00 Regular $10.00 Promo †Offer conditionsRecorded code: ESIMDB10 · One use per customer · Other eligibility unconfirmed |
| Jetpac | 5 GB | 1 day | $2.00 Regular $6.00 Promo †Offer conditionsRecorded code: ESIMDB4OFF · One use per customer · Other eligibility unconfirmed |
| Yesim | 5 GB | 30 days | $7.86 Regular $9.82 Promo †Offer conditionsRecorded code: ESIMDB20 · First purchase only · Other eligibility unconfirmed |
| GigSky | 5 GB | 30 days | $8.23 Regular $10.29 Promo †Offer conditionsRecorded code: GSKYES20 · One use per customer · No stacking · Other eligibility unconfirmed |
Jetpac's $2.00 sits 27.8% below Airwaily's $2.77, but it covers one day against 10 days, so this is an upfront-price difference. Airwaily's 5 GB is 72% cheaper than Saily's $9.89 30-day plan and 66.3% cheaper than GigSky's $8.23.
Cheapest Japan eSIM with exactly 10 GB
Jetpac's 1-day 10 GB at $5.00 was again the lowest, with Airwaily's 30-day 10 GB at $5.71 close behind. MobiMatter charged $7.99, and the remaining six sat between $12.60 and $16.19.
| Provider | Allowance | Validity | Listed price |
|---|---|---|---|
| AirwailyCountry-specific Japan plan | 10 GB | 30 days | $5.71 |
| Airalo | 10 GB | 7 days | $15.30 Regular $17.00 Promo †Offer conditionsRecorded code: ESIMDB10 · Excluded methods: Airmoney, Apple Pay, Google Pay, PayPal · No stacking · Other eligibility unconfirmed |
| Saily | 10 GB | 30 days | $16.19 Regular $17.99 Promo †Offer conditionsRecorded code: ESIMDB10 · First purchase only · No stacking · Other eligibility unconfirmed |
| Nomad | 10 GB | 30 days | $16.00 |
| MobiMatter | 10 GB | 30 days | $7.99 |
| Ubigi | 10 GB | 7 days | $12.60 Regular $14.00 Promo †Offer conditionsRecorded code: ESIMDB10 · One use per customer · Other eligibility unconfirmed |
| Jetpac | 10 GB | 1 day | $5.00 Regular $9.00 Promo †Offer conditionsRecorded code: ESIMDB4OFF · One use per customer · Other eligibility unconfirmed |
| Yesim | 10 GB | 30 days | $14.28 Regular $17.85 Promo †Offer conditionsRecorded code: ESIMDB20 · First purchase only · Other eligibility unconfirmed |
| GigSky | 10 GB | 30 days | $13.43 Regular $16.79 Promo †Offer conditionsRecorded code: GSKYES20 · One use per customer · No stacking · Other eligibility unconfirmed |
Jetpac's $5.00 is 12.4% below Airwaily's $5.71, though its validity is 29 days shorter. Comparing 30-day offers, Airwaily's 10 GB is 64.7% cheaper than Saily's $16.19 and 57.5% cheaper than GigSky's $13.43.
Cheapest Japan eSIM with at least 15 GB
This band requires at least 15 GB rather than exactly 15 GB. Airwaily's 16 GB for 30 days at $9.69 was cheapest, then MobiMatter's 15 GB month at $11.99 and Jetpac's 15 GB week at $12.00.
| Provider | Allowance | Validity | Listed price |
|---|---|---|---|
| AirwailyCountry-specific Japan plan | 16 GB | 30 days | $9.69 |
| Airalo | 20 GB | 15 days | $21.60 Regular $24.00 Promo †Offer conditionsRecorded code: ESIMDB10 · Excluded methods: Airmoney, Apple Pay, Google Pay, PayPal · No stacking · Other eligibility unconfirmed |
| Saily | 20 GB | 30 days | $22.49 Regular $24.99 Promo †Offer conditionsRecorded code: ESIMDB10 · First purchase only · No stacking · Other eligibility unconfirmed |
| Nomad | 20 GB | 30 days | $23.00 |
| MobiMatter | 15 GB | 30 days | $11.99 |
| UbigiMulti-country · includes Japan | 25 GB | 7 days | $22.50 Regular $25.00 Promo †Offer conditionsRecorded code: ESIMDB10 · One use per customer · Other eligibility unconfirmed |
| Jetpac | 15 GB | 7 days | $12.00 Regular $16.00 Promo †Offer conditionsRecorded code: ESIMDB4OFF · One use per customer · Other eligibility unconfirmed |
| Yesim | 20 GB | 30 days | $22.14 Regular $27.67 Promo †Offer conditionsRecorded code: ESIMDB20 · First purchase only · Other eligibility unconfirmed |
| GigSkyMulti-country · includes Japan | 20 GB | 60 days | $29.59 Regular $36.99 Promo †Offer conditionsRecorded code: GSKYES20 · One use per customer · No stacking · Other eligibility unconfirmed |
Airwaily's 16 GB month is 56.9% below Saily's 20 GB month at $22.49 and 57.9% below Nomad's 20 GB at $23.00. Those rivals include 4 GB more, so the figures compare upfront prices rather than identical allowances.
Cheapest Japan eSIM with exactly 30 GB
Airalo and GigSky had no 30 GB entry, leaving seven offers. Airwaily's 30 GB month at $16.02 led, followed by MobiMatter at $22.99, Jetpac at $25.99 and Yesim at $29.46.
| Provider | Allowance | Validity | Listed price |
|---|---|---|---|
| AirwailyCountry-specific Japan plan | 30 GB | 30 days | $16.02 |
| Airalo | — | — | No matching offer |
| SailyMulti-country · includes Japan | 30 GB | 30 days | $53.99 Regular $59.99 Promo †Offer conditionsRecorded code: ESIMDB10 · First purchase only · No stacking · Other eligibility unconfirmed |
| NomadMulti-country · includes Japan | 30 GB | 365 days | $79.00 |
| MobiMatter | 30 GB | 30 days | $22.99 |
| Ubigi | 30 GB | 15 days | $35.10 Regular $39.00 Promo †Offer conditionsRecorded code: ESIMDB10 · One use per customer · Other eligibility unconfirmed |
| Jetpac | 30 GB | 30 days | $25.99 Regular $29.99 Promo †Offer conditionsRecorded code: ESIMDB4OFF · One use per customer · Other eligibility unconfirmed |
| Yesim | 30 GB | 30 days | $29.46 Regular $36.83 Promo †Offer conditionsRecorded code: ESIMDB20 · First purchase only · Other eligibility unconfirmed |
| GigSky | — | — | No matching offer |
Airwaily's $16.02 is 70.3% below Saily's $53.99 multi-country 30 GB month, 45.6% below Yesim's $29.46 and 30.3% below MobiMatter's $22.99. Each rival matches the 30 GB allowance and 30-day validity, with Saily's offer sold as a multi-country plan.
Cheapest Japan eSIM with exactly 50 GB
MobiMatter's 50 GB month at $29.99 was the cheapest exact 50 GB offer, ahead of Airwaily's $32.82 and Nomad's $35.00. GigSky's 90-day 50 GB came to $46.39; Yesim and Saily had no entry.
| Provider | Allowance | Validity | Listed price |
|---|---|---|---|
| AirwailyCountry-specific Japan plan | 50 GB | 30 days | $32.82 |
| AiraloMulti-country · includes Japan | 50 GB | 30 days | $53.10 Regular $59.00 Promo †Offer conditionsRecorded code: ESIMDB10 · Excluded methods: Airmoney, Apple Pay, Google Pay, PayPal · No stacking · Other eligibility unconfirmed |
| Saily | — | — | No matching offer |
| Nomad | 50 GB | 30 days | $35.00 |
| MobiMatter | 50 GB | 30 days | $29.99 |
| Ubigi | 50 GB | 30 days | $49.50 Regular $55.00 Promo †Offer conditionsRecorded code: ESIMDB10 · One use per customer · Other eligibility unconfirmed |
| JetpacMulti-country · includes Japan | 50 GB | 365 days | $245.00 Regular $249.00 Promo †Offer conditionsRecorded code: ESIMDB4OFF · One use per customer · Other eligibility unconfirmed |
| Yesim | — | — | No matching offer |
| GigSkyMulti-country · includes Japan | 50 GB | 90 days | $46.39 Regular $57.99 Promo †Offer conditionsRecorded code: GSKYES20 · One use per customer · No stacking · Other eligibility unconfirmed |
MobiMatter's $29.99 is 8.6% below Airwaily's $32.82, and both give 50 GB over 30 days. Even so, Airwaily is 38.2% under Airalo's $53.10 50 GB month and 6.2% under Nomad's $35.00.
Best Japan eSIM for a one-week trip
For a 7-day minimum, Airwaily's 1 GB week at $0.76 was cheapest, then Ubigi's 1 GB week at $2.25 and GigSky's $2.39. Jetpac's 3 GB week at $3.00 asks more upfront for a larger allowance.
| Provider | Allowance | Validity | Listed price |
|---|---|---|---|
| AirwailyCountry-specific Japan plan | 1 GB | 7 days | $0.76 |
| Airalo | 3 GB | 7 days | $7.20 Regular $8.00 Promo †Offer conditionsRecorded code: ESIMDB10 · Excluded methods: Airmoney, Apple Pay, Google Pay, PayPal · No stacking · Other eligibility unconfirmed |
| Saily | 1 GB | 7 days | $3.59 Regular $3.99 Promo †Offer conditionsRecorded code: ESIMDB10 · First purchase only · No stacking · Other eligibility unconfirmed |
| NomadMulti-country · includes Japan | 1 GB | 7 days | $4.00 |
| MobiMatterMulti-country · includes Japan | 1 GB | 14 days | $3.99 |
| UbigiMulti-country · includes Japan | 1 GB | 7 days | $2.25 Regular $2.50 Promo †Offer conditionsRecorded code: ESIMDB10 · One use per customer · Other eligibility unconfirmed |
| Jetpac | 3 GB | 7 days | $3.00 Regular $7.00 Promo †Offer conditionsRecorded code: ESIMDB4OFF · One use per customer · Other eligibility unconfirmed |
| Yesim | 1 GB | 30 days | $3.30 Regular $4.13 Promo †Offer conditionsRecorded code: ESIMDB20 · First purchase only · Other eligibility unconfirmed |
| GigSky | 1 GB | 7 days | $2.39 Regular $2.99 Promo †Offer conditionsRecorded code: GSKYES20 · One use per customer · No stacking · Other eligibility unconfirmed |
The $0.76 week is 78.8% below Saily's $3.59 and 81% below Nomad's $4.00, both matching on 1 GB and 7 days. Jetpac's 3 GB week at $3.00 costs more but triples the data, which suits a week of heavier mapping and photo sharing.
Best Japan eSIM for trips of two weeks or more
With a 15-day minimum, Airwaily's 5 GB for 30 days at $3.42 was cheapest, then MobiMatter's 5 GB for 15 days at $5.49 and Jetpac's 5 GB month at $6.00.
| Provider | Allowance | Validity | Listed price |
|---|---|---|---|
| AirwailyCountry-specific Japan plan | 5 GB | 30 days | $3.42 |
| Airalo | 5 GB | 15 days | $9.45 Regular $10.50 Promo †Offer conditionsRecorded code: ESIMDB10 · Excluded methods: Airmoney, Apple Pay, Google Pay, PayPal · No stacking · Other eligibility unconfirmed |
| Saily | 5 GB | 30 days | $9.89 Regular $10.99 Promo †Offer conditionsRecorded code: ESIMDB10 · First purchase only · No stacking · Other eligibility unconfirmed |
| Nomad | 5 GB | 30 days | $10.00 |
| MobiMatter | 5 GB | 15 days | $5.49 |
| Ubigi | 5 GB | 15 days | $9.00 Regular $10.00 Promo †Offer conditionsRecorded code: ESIMDB10 · One use per customer · Other eligibility unconfirmed |
| Jetpac | 5 GB | 30 days | $6.00 Regular $10.00 Promo †Offer conditionsRecorded code: ESIMDB4OFF · One use per customer · Other eligibility unconfirmed |
| Yesim | 5 GB | 30 days | $7.86 Regular $9.82 Promo †Offer conditionsRecorded code: ESIMDB20 · First purchase only · Other eligibility unconfirmed |
| GigSky | 5 GB | 30 days | $8.23 Regular $10.29 Promo †Offer conditionsRecorded code: GSKYES20 · One use per customer · No stacking · Other eligibility unconfirmed |
Airwaily's $3.42 is 65.4% below Saily's $9.89 and 65.8% below Nomad's $10.00, all 5 GB over 30 days. MobiMatter's 15-day 5 GB at $5.49 also qualifies here despite the shorter validity.
Best Japan eSIM for a one-month stay
Airwaily's 10 GB month at $5.71 was the cheapest 30-day offer, then MobiMatter at $7.99 and Jetpac at $12.00. Airalo, Saily and Nomad all listed $16.00 or more.
| Provider | Allowance | Validity | Listed price |
|---|---|---|---|
| AirwailyCountry-specific Japan plan | 10 GB | 30 days | $5.71 |
| Airalo | 10 GB | 30 days | $16.20 Regular $18.00 Promo †Offer conditionsRecorded code: ESIMDB10 · Excluded methods: Airmoney, Apple Pay, Google Pay, PayPal · No stacking · Other eligibility unconfirmed |
| Saily | 10 GB | 30 days | $16.19 Regular $17.99 Promo †Offer conditionsRecorded code: ESIMDB10 · First purchase only · No stacking · Other eligibility unconfirmed |
| Nomad | 10 GB | 30 days | $16.00 |
| MobiMatter | 10 GB | 30 days | $7.99 |
| Ubigi | 10 GB | 30 days | $14.85 Regular $16.50 Promo †Offer conditionsRecorded code: ESIMDB10 · One use per customer · Other eligibility unconfirmed |
| Jetpac | 10 GB | 30 days | $12.00 Regular $16.00 Promo †Offer conditionsRecorded code: ESIMDB4OFF · One use per customer · Other eligibility unconfirmed |
| Yesim | 10 GB | 30 days | $14.28 Regular $17.85 Promo †Offer conditionsRecorded code: ESIMDB20 · First purchase only · Other eligibility unconfirmed |
| GigSky | 10 GB | 30 days | $13.43 Regular $16.79 Promo †Offer conditionsRecorded code: GSKYES20 · One use per customer · No stacking · Other eligibility unconfirmed |
Airwaily's $5.71 is 64.7% below Saily's $16.19 for the same 10 GB and 30 days, 57.5% below GigSky's $13.43 and 64.8% below Airalo's $16.20. Every rival in these pairs matches both allowance and validity.
Best Japan eSIM for two months or more
Only offers valid for at least 60 days qualify here. Airwaily's 30 GB for 60 days at $23.10 was cheapest, with MobiMatter's 35 GB 60-day plan at $26.99 next. Competitors that qualified used longer, mostly multi-country plans.
| Provider | Allowance | Validity | Listed price |
|---|---|---|---|
| AirwailyCountry-specific Japan plan | 30 GB | 60 days | $23.10 |
| AiraloMulti-country · includes Japan | 50 GB | 90 days | $62.10 Regular $69.00 Promo †Offer conditionsRecorded code: ESIMDB10 · Excluded methods: Airmoney, Apple Pay, Google Pay, PayPal · No stacking · Other eligibility unconfirmed |
| SailyMulti-country · includes Japan | 30 GB | 90 days | $107.99 Regular $119.99 Promo †Offer conditionsRecorded code: ESIMDB10 · First purchase only · No stacking · Other eligibility unconfirmed |
| NomadMulti-country · includes Japan | 30 GB | 365 days | $79.00 |
| MobiMatter | 35 GB | 60 days | $26.99 |
| UbigiMulti-country · includes Japan | 50 GB | 180 days | $79.20 Regular $88.00 Promo †Offer conditionsRecorded code: ESIMDB10 · One use per customer · Other eligibility unconfirmed |
| JetpacMulti-country · includes Japan | 30 GB | 180 days | $95.99 Regular $99.99 Promo †Offer conditionsRecorded code: ESIMDB4OFF · One use per customer · Other eligibility unconfirmed |
| YesimMulti-country · includes Japan | 40 GB | 365 days | $61.62 Regular $77.03 Promo †Offer conditionsRecorded code: ESIMDB20 · First purchase only · Other eligibility unconfirmed |
| GigSkyMulti-country · includes Japan | 50 GB | 90 days | $46.39 Regular $57.99 Promo †Offer conditionsRecorded code: GSKYES20 · One use per customer · No stacking · Other eligibility unconfirmed |
Airwaily's $23.10 is 14.4% below MobiMatter's 35 GB plan at $26.99, which adds 5 GB, and 70.8% below Nomad's $79.00 30 GB listing, which runs 365 days. Both are upfront-price gaps across different allowances or validity.
Japan eSIM verdict: which plan fits your trip
For most Japan trips the deciding factor is validity rather than raw allowance. Airwaily's month-long tiers are a sensible starting point: 10 GB over 30 days at $5.71, 16 GB at $9.69 and 30 GB at $16.02. Jetpac's 5 GB and 10 GB bundles are cheaper upfront but expire after one day, so they fit a first day or a long layover. At 50 GB, MobiMatter's $29.99 month is $2.83 cheaper than Airwaily's $32.82. If your stay runs past a month, Airwaily's 30 GB 60-day plan costs $23.10.
How the Japan eSIM prices were checked
Airwaily's prices were recorded on 11 November 2026 and the competitor entries on 8 November 2026, all in US dollars, with some competitor amounts converted from their published currency. Promotions are already reflected, not applied twice. Bands match on allowance, and the trip-length bands add a minimum validity; these nine sellers are a selection, so a missing row is not proof a provider ignores Japan.
Frequently asked questions
Which Japan eSIM is cheapest overall?
Airwaily's 100 MB for 7 days at $0.22, promotional against $0.87, is the cheapest paid entry here. It suits maps and messages rather than video, so plan on a larger allowance for a trip of 2 weeks; Airwaily's next step is 1 GB for 7 days at $0.76.
Which 1 GB Japan eSIM is cheapest?
Airwaily's 1 GB for 7 days at $0.76 was the lowest of eight 1 GB listings and carried no promotion. Ubigi's promotional 1 GB lasted 1 day at $1.80, while MobiMatter's 1 GB covers a stay of 14 days for $3.99.
What does the cheapest 3 GB Japan eSIM cost?
Jetpac's 3 GB bundle at $1.00, promotional against $5.00, was cheapest, but plans valid for 1 day will not cover a longer stay. Airwaily sells 3 GB for 30 days at $2.28.
Which Japan eSIM is cheapest for 5 GB?
Jetpac's 5 GB for a single day at $2.00, promotional against $6.00, led the 5 GB band. Airwaily's non-promotional 10-day 5 GB cost $2.77; these data plans differ mainly in validity, and its 30-day 5 GB at $3.42 is the cheapest full-month 5 GB offer.
Which Japan eSIM has the lowest 10 GB price?
Jetpac's single-day 10 GB at $5.00, promotional against $9.00, was the lowest 10 GB entry. Airwaily's non-promotional 30-day 10 GB at $5.71 costs $0.71 more upfront, but it lasts 29 days longer and is the cheapest 30-day 10 GB plan listed.
Which Japan eSIM is cheapest for 20 GB?
Airwaily's 20 GB for 30 days at $10.14 was the lowest 20 GB entry and was not promotional; it also undercuts its own 18 GB listing at $10.18. MobiMatter's 20 GB month is $13.99. If you expect to need more data, compare the larger allowances rather than assuming a top-up will be available.
