Japan travel eSIM comparison
Japan eSIMs are almost always data-only — you keep WhatsApp/Signal on your HK number and don't need any registration. Plans ride on NTT Docomo, KDDI or SoftBank, the three networks whose Shinkansen-corridor and rural Hokkaido/Tohoku coverage is comfortably ahead of the budget resellers.
Cheapest right now: Airalo JP · 1GB · 3 days at HK$31.79 per month.
What matters here
- Data-only: your HK number keeps receiving SMS while in Japan
- Docomo/KDDI-hosted plans cover rural Hokkaido & Tohoku best
- No Japanese real-name registration needed for short stays
eSIMs with Japan data (25)
AiraloAiralo JP · 1GB · 3 days
HK$31.79 / GB
- Destination
- Japan
- Data
- 1 GB
- Validity
- 3 days
- Hotspot
- Yes
AiraloAiralo JP · 3GB · 3 days
HK$19.27 / GB
- Destination
- Japan
- Data
- 3 GB
- Validity
- 3 days
- Hotspot
- Yes
AiraloAiralo JP · 3GB · 7 days
HK$20.23 / GB
- Destination
- Japan
- Data
- 3 GB
- Validity
- 7 days
- Hotspot
- Yes
AiraloAiralo JP · 5GB · 7 days
HK$15.03 / GB
- Destination
- Japan
- Data
- 5 GB
- Validity
- 7 days
- Hotspot
- Yes
AiraloAiralo JP · 5GB · 15 days
HK$15.61 / GB
- Destination
- Japan
- Data
- 5 GB
- Validity
- 15 days
- Hotspot
- Yes
AiraloAiralo JP · 5GB · 30 days
HK$16.76 / GB
- Destination
- Japan
- Data
- 5 GB
- Validity
- 30 days
- Hotspot
- Yes
AiraloAiralo JP · Unlimited · 3 days
- Destination
- Japan
- Data
- Unlimited
- Validity
- 3 days
- Hotspot
- Yes
AiraloAiralo JP · Unlimited · 5 days
- Destination
- Japan
- Data
- Unlimited
- Validity
- 5 days
- Hotspot
- Yes
AiraloAiralo JP · 10GB · 7 days
HK$12.72 / GB
- Destination
- Japan
- Data
- 10 GB
- Validity
- 7 days
- Hotspot
- Yes
AiraloAiralo JP · 10GB · 15 days
HK$13.01 / GB
- Destination
- Japan
- Data
- 10 GB
- Validity
- 15 days
- Hotspot
- Yes
NomadNomad Japan · 10GB · 30 days
HK$13.2 / GB
- Destination
- Japan
- Data
- 10 GB
- Validity
- 30 days
- Hotspot
- Yes
AiraloAiralo JP · 10GB · 30 days
HK$13.58 / GB
- Destination
- Japan
- Data
- 10 GB
- Validity
- 30 days
- Hotspot
- Yes
UbigiUbigi Japan · 10GB · 30 days
HK$15 / GB
- Destination
- Japan
- Data
- 10 GB
- Validity
- 30 days
- Hotspot
- Yes
SailySaily Asia · 10GB · 30 days
HK$15.5 / GB
- Destination
- Asia
- Data
- 10 GB
- Validity
- 30 days
- Hotspot
- Yes
cslcsl DapDap Japan Day Pass · 3GB/day · 5 days
- Destination
- Japan
- Data
- 3 GB / day
- Validity
- 5 days
- Hotspot
- Yes
AiraloAiralo JP · 20GB · 15 days
HK$8.96 / GB
- Destination
- Japan
- Data
- 20 GB
- Validity
- 15 days
- Hotspot
- Yes
AiraloAiralo JP · 20GB · 30 days
HK$9.25 / GB
- Destination
- Japan
- Data
- 20 GB
- Validity
- 30 days
- Hotspot
- Yes
NomadNomad Global · 5GB · 30 days
HK$37.6 / GB
- Destination
- Global
- Data
- 5 GB
- Validity
- 30 days
- Hotspot
- Yes
AiraloAiralo JP · Unlimited · 7 days
- Destination
- Japan
- Data
- Unlimited
- Validity
- 7 days
- Hotspot
- Yes
UbigiUbigi Global · 10GB · 30 days
HK$23.5 / GB
- Destination
- Global
- Data
- 10 GB
- Validity
- 30 days
- Hotspot
- Yes
AiraloAiralo JP · Unlimited · 10 days
- Destination
- Japan
- Data
- Unlimited
- Validity
- 10 days
- Hotspot
- Yes
HolaflyHolafly Japan Unlimited · Unlimited · 10 days
- Destination
- Japan
- Data
- Unlimited
- Validity
- 10 days
- Hotspot
- No
AiraloAiralo Global (Discover+) · 10GB · 365 days
HK$28 / GB
- Destination
- Global
- Data
- 10 GB
- Validity
- 365 days
- Hotspot
- Yes
AiraloAiralo JP · Unlimited · 15 days
- Destination
- Japan
- Data
- Unlimited
- Validity
- 15 days
- Hotspot
- Yes
AiraloAiralo JP · Unlimited · 30 days
- Destination
- Japan
- Data
- Unlimited
- Validity
- 30 days
- Hotspot
- Yes
Markdown version (for AI agents): https://dealsifu.com/api/md/esim/jp
FAQs
Do Japan travel eSIMs include a phone number?
Almost never. Traveler eSIMs are data-only; calls run over WhatsApp/Signal/Facetime using your existing number. If you truly need a +81 number, rent one from a provider like Mobal after arrival.
Will my eSIM work on the Shinkansen and in rural areas?
Yes on the major host networks — Docomo and KDDI plans hold signal along the Tokaido/Sanyo Shinkansen and in most of Hokkaido and Tohoku. Very cheap no-name plans sometimes roam onto smaller carriers with weaker rural coverage.
Other destinations
Prices are compiled from provider publications and can change at any time; confirm with providers before purchasing.