Previously, when implementing processing to determine shipping fees, I didn’t understand the definition of remote islands, so I’m sharing my research notes.

Common setup on EC sites like the following ・Mainland (Honshu) flat rate: 500 yen ・Hokkaido, Kyushu, Shikoku: 700 yen ・Okinawa and remote islands: 1000 yen

Response from Yamato Transport support

平素はヤマト運輸をご利用いただき誠にありがとうございます。 お問い合わせをいただきました件でございますが、弊社では 「離島」の別料金はいただいておりません。 何卒よろしくお願い申し上げます。 (Thank you for using Yamato Transport. Regarding your inquiry, we do not charge separate fees for “remote islands”. Thank you for your understanding.)

Since Yamato Transport doesn’t seem to charge separate fees for “remote islands”, it looks easy because shipping fees can be determined by prefecture alone.

---

参考情報

・離島とは(島の基礎知識)

That’s all from the Gemba.