Japan's networks are NTT docomo, au (KDDI), SoftBank and Rakuten Mobile. Coverage in cities, on the Shinkansen and in most rural areas is excellent.
Many visitors weigh an eSIM against a rented pocket WiFi. An eSIM is simpler for one person; a pocket WiFi can be cheaper for a group sharing one connection — but it's another device to charge and return.
We may earn a commission if you buy through provider links. It doesn't change the order of plans. Affiliate disclosure
Lowest price · Cheapest for a week or more
$1.49
$0.21/day
Airhub1 GB for 7 days
Visit Airhub(opens in a new tab)See in the listLowest per day · Cheapest for a month or more
$3.60
$0.12/day
eSIM2Fly3 GB for 30 days
Visit eSIM2Fly(opens in a new tab)See in the listCheapest unlimited
$2.80
$2.80/day
eSIMXUnlimited for 1 day
Visit eSIMX(opens in a new tab)See in the list186 of 186 plans for Japan
UbigiPrices checked Source: cellulardata.ubigi.com (opens in a new tab)
UbigiPrices checked Source: cellulardata.ubigi.com (opens in a new tab)
SimOptionsPrices checked Source: simoptions.com (opens in a new tab)
eSIMXPrices checked Source: esimx.com (opens in a new tab)
AirhubPrices checked Source: airhubapp.com (opens in a new tab)
UbigiPrices checked Source: cellulardata.ubigi.com (opens in a new tab)
aloSIMPrices checked Source: alosim.com (opens in a new tab)
aloSIMPrices checked Source: alosim.com (opens in a new tab)
eSIMXPrices checked Source: esimx.com (opens in a new tab)
aloSIMPrices checked Source: alosim.com (opens in a new tab)
aloSIMPrices checked Source: alosim.com (opens in a new tab)
JetpacPrices checked Source: jetpacglobal.com (opens in a new tab)
Showing the first 12, in the order chosen above.
The cheapest plan from each provider that lasts at least this long. Data allowance in brackets.
| Provider | 3+ days | 7+ days | 15+ days | 30+ days |
|---|---|---|---|---|
| Airalo | $11.503 days (unlimited) | $26.507 days (unlimited) | $48.0015 days (unlimited) | $69.0030 days (unlimited) |
| Holafly | $11.903 days (unlimited) | $27.507 days (unlimited) | $50.5015 days (unlimited) | $73.9030 days (unlimited) |
| aloSIM | $4.003 days (1 GB) | $4.507 days (1 GB) | $6.5015 days (2 GB) | $8.0030 days (3 GB) |
| Ubigi | $3.503 days (1 GB) | $2.507 days (1 GB) | $10.0015 days (5 GB) | $8.0030 days (1 GB) |
| Saily | $18.995 days (unlimited) | $3.997 days (1 GB) | $48.9915 days (unlimited) | $7.9930 days (3 GB) |
| eSIMX | $4.003 days (unlimited) | $3.507 days (3 GB) | $16.8015 days (unlimited) | $3.8030 days (3 GB) |
| eTravelSim | $19.997 days (unlimited) | $19.997 days (unlimited) | $39.9915 days (unlimited) | $4.5030 days (1 GB) |
| SimOptions | $2.503 days (1 GB) | $10.507 days (5 GB) | $36.5015 days (20 GB) | $90.9030 days (50 GB) |
| GoMoWorld | $4.997 days (3 GB) | $4.997 days (3 GB) | $12.9930 days (14 GB) | $12.9930 days (14 GB) |
| Jetpac | $10.993 days (unlimited) | $7.007 days (3 GB) | $41.9915 days (unlimited) | $10.0030 days (5 GB) |
| eSIMGlobe | $2.907 days (1 GB) | $2.907 days (1 GB) | $4.5015 days (3 GB) | $4.9030 days (3 GB) |
| Voye | $8.007 days (5 GB) | $8.007 days (5 GB) | $12.0015 days (8 GB) | $16.0030 days (15 GB) |
| eSIM2Fly | $2.207 days (1 GB) | $2.207 days (1 GB) | $3.5015 days (3 GB) | $3.6030 days (3 GB) |
| eSIMo | $3.907 days (1 GB) | $3.907 days (1 GB) | $8.9030 days (3 GB) | $8.9030 days (3 GB) |
| Virgin Connect Roam | $4.007 days (1 GB) | $4.007 days (1 GB) | $5.5015 days (2 GB) | $7.0030 days (3 GB) |
| Airhub | $1.497 days (1 GB) | $1.497 days (1 GB) | $36.0015 days (unlimited) | $4.5030 days (4 GB) |
eSIM or pocket WiFi?
If you're travelling as a group, compare one pocket WiFi rental against an eSIM per person. If you're solo or the group splits up during the day, eSIMs avoid relying on whoever carries the router. Holafly documents a 1 GB per day hotspot allowance, which suits light sharing only.
Source: Holafly — Japan eSIM page
Which network you get
Holafly lists KDDI and SoftBank. Airalo lists SoftBank plus one network it doesn't name. aloSIM lists KDDI. Saily lists KDDI and SoftBank. Ubigi lists KDDI, NTT Docomo and SoftBank, the only one of the seven to name docomo.
Source: Holafly — Japan eSIM page; Airalo — Japan eSIM page; aloSIM — Japan eSIM page; Ubigi — Japan 10 GB, 30 days plan page
Remote islands and trails
Holafly names mountain regions, forests and remote islands — such as hiking trails on Yakushima — as places with weaker coverage.
Source: Holafly — Japan eSIM page
| Provider | Networks it lists |
|---|---|
| Airalo | SoftBankAiralo lists SoftBank as primary plus one other network it does not name. |
| Holafly | KDDI (au), SoftBank |
| aloSIM | KDDI Corporation |
| Ubigi | KDDI, NTT Docomo, Softbank |
| Saily | KDDI, SoftBank |
| eSIMX | Not named |
| eTravelSim | KDDI (au) |
| SimOptions | Docomo, Softbank |
| GoMoWorld | Not named |
| Jetpac | Not named |
| eSIMGlobe | KDDI/au, SoftBank |
| Voye | NTT Docomo, SoftBank, KDDI |
| eSIM2Fly | KDDI/au, SoftBank |
| eSIMo | Not named |
| Virgin Connect Roam | KDDI, Softbank, NTT Docomo, Inc., Rakuten Mobile |
| Airhub | KDDI, NTT Docomo |
In our check on 24 Oct 2026, the cheapest verified plan for Japan was Airhub's japan 1 gb, 7 days (kddi) at $1.49. A 30-day plan started at $3.60 (eSIM2Fly). Prices change, so confirm on the provider's site.
For one person, an eSIM is usually simpler. For a group that stays together, a single pocket WiFi can cost less overall.
Holafly lists KDDI (au) and SoftBank. Airalo lists SoftBank plus one other network it doesn't name. aloSIM lists KDDI. Saily lists KDDI and SoftBank. Ubigi lists KDDI, NTT Docomo and SoftBank.
Single-country plans stop at the border. Compare nearby destinations, or see Asia prices side by side.
Official = regulator or manufacturer. Provider = the seller's own page. Secondary = press or independent guides, used only where no official source was available.
Page content last reviewed . Found something out of date? Tell us.