airdatalink eSIM Data Plans for Japan

Airdatalink does not provide an unlimited data eSIM for Japan. The provider offers fixed‑data plans with a 50GB or 30GB allowance for 30 days. For example, a 50GB plan from KDDI & Softbank costs $31.08 USD, while the same data amount from IIJ‑Docomo is priced at $32.05 USD, and a 30GB plan is available for $21.37 USD. Choosing a fixed‑data plan can be more cost‑effective for travelers who do not require constantly unlimited bandwidth, whereas heavy data users might need separate coverage options.

Airdatalink does not provide an eSIM plan with a phone number or SMS capability for Japan. All of the plans they offer for Japan are data‑only; a phone number, inbound or outbound calls, and SMS are unavailable. Travelers can still use popular VoIP services such as WhatsApp, Telegram, or iMessage over the data connection for voice and text communication.

Airdatalink offers a total of 24 data‑only plans for travelers heading to Japan, divided evenly between single‑country and multi‑country options. Eleven single‑country plans provide data solely for use within Japan, while eleven multi‑country plans can be used across a range of destinations that include Japan.

The single‑country plans typically feature a fixed data cap that remains constant regardless of how many days you stay, whereas the multi‑country plans often come with daily data caps that reset each day, offering more flexibility for frequent travelers.

Across all plans the price range is approximately $4.86 to $50.27 and the data cap ranges from 3 GB to 50 GB with validity periods between 15 and 30 days. Many of the plans include options for tethering and allow reduced speed at 128 kbps or 200 kbps.