Best eSIM for a 10-day trip to Japan (November 2026)

Four eSIM providers for Japan, compared on cost per GB, throttling after the high-speed bucket, hotspot support and whether a phone number is included. The cheapest plan is not the one most travellers buy.

Last verified 2026-11-01 · 4 retailers compared · prices include shipping where stated

Quick answer

Best overall

Airalo — $9.00 delivered

Price range

$9.00 – $27.00

Who it is for

Travellers going to Japan for 8-12 days on a single device, who need data but not a local number.

Skip it if

You need a Japanese phone number for restaurant bookings, or you stay longer than a month.

Compare all offers

Retailer	Price	Shipping	Landed cost	Stock	Notes
Airalo	$9.00	instant delivery	$9.00	In stock	10 GB / 30 days, data only, hotspot allowed
Ubigi	$12.00	instant delivery	$12.00	In stock	10 GB / 30 days, soft throttle afterwards
Nomad	$14.00	instant delivery	$14.00	In stock	10 GB / 30 days, 5G where available
Holafly	$27.00	instant delivery	$27.00	In stock	Unlimited data, hotspot limited, no number

Landed cost = item price + shipping shown by the retailer. Taxes and duties vary by destination and are not included.

Top picks

Airalo Best value

Cheapest landed cost — $9.00 delivered

Price check link being verified — see the full table below.

Ubigi

Runner-up — $12.00 delivered

Price check link being verified — see the full table below.

Nomad

Also worth checking — $14.00 delivered

Price check link being verified — see the full table below.

What matters when buying this

Cost per usable GB at the end of the trip, not the headline price.
What happens after the high-speed bucket: a hard stop, a throttle, or a top-up requirement.
Hotspot rules. Unlimited plans frequently ban tethering, which breaks laptop work.
Whether installation needs the phone to be unlocked and whether it can be installed before departure.

Common questions

Is an eSIM cheaper than a Japanese tourist SIM?

For trips under two weeks an eSIM is usually cheaper once the airport queue and the ¥3,500 to ¥5,000 counter price are counted. For stays over a month, a local monthly SIM wins on cost per GB.

Do I need a phone number?

Only for reservations that call back. Data-only eSIMs cannot receive SMS, so keep your home SIM active for verification codes and turn off its data roaming.

Can I keep my WhatsApp number?

Yes. WhatsApp stays bound to your existing number; the eSIM only supplies the data connection.