KKday promo codes for Japan 2026

1Where this list comes from

KKday prints its codes on its own campaign pages — the Japan hub, the Made in Japan page, the 10.10 winter sale — and nowhere else. There is no export to pull, so these nine come from those pages, and every card below names the one it came from, because that page is also the authority on the terms.

Four of them are written for Japan alone: attraction tickets, point-to-point rail, JR East shinkansen, and ski products. The other five are campaign-wide codes that happen to cover Japan — tours, transport, tickets and a sitewide offer for an account that has never booked.

2The spend floor and the cap decide what a percentage is worth

A KKday code is a percentage with two numbers attached, and the smaller of them decides what you actually save. Three examples from the list:

• MYSTOUR10 is 10% off with a USD100 floor and a USD20 cap. On a USD120 tour it takes USD12 off, and the cap never comes into play; on a USD400 private tour it still takes USD20.
• MYSTICKET5 is the other shape: 5% off, USD80 floor, USD8 cap. The smallest basket that qualifies saves USD4.
• SNOW10 is capped hardest of all — 10% off, never more than USD3. A USD30 intercity booking saves USD3 and a booking four times that size saves the same USD3, which makes it a code for small transport bookings rather than a long rail day.

None of those numbers come from us. They are printed in the code's own conditions, which the card quotes.

3Six codes name the residents who may use them

The Japan hub's two codes are written for customers in Australia, New Zealand, the United States, Europe and Southeast Asia. The winter-sale four add Japan, Korea, Taiwan, mainland China and Southeast Asia to that audience. Residency here means the country on your KKday account, not the passport in your bag or the city you are standing in.

The remaining three — JREAST7, JPKRSKI88 and APP5OFF — carry no country line on their campaign page. That is not the same as open to everyone: it means KKday has published no restriction, and the campaign page is where a restriction would appear if it had one. APP5OFF is the one code here with a condition of a different kind, and it is written into its name: a new account only.

KKday's Hong Kong and Taiwan sites run their own resident-only sets, priced in HK$ and NT$. They are not on this list: their terms are written for accounts opened in those markets, and a code entered from elsewhere is refused at the till.

4Why a code is refused

The usual causes, in the order they bite on KKday:

• It was never claimed. Several of these codes live behind a claim button on the campaign page, and a code copied from a list somewhere else will not exist on your account.
• The product is outside the code. SNOW10 excludes airport transfers, ferries and eSIMs; the Japan transport codes of the same family excluded railway and flights. The code's own line names what it covers.
• The basket is under the floor. A USD80 floor on tickets is not a suggestion — the field accepts the code and the discount stays at zero.
• The cap has already decided. Once the basket passes the point where the cap bites, adding more to the order saves you nothing further.
• The allocation ran out. KKday issues these in limited numbers and retires them when they go, which is why a code can work this morning and be refused tonight.

5How the list is kept honest

Every card carries the day the booking window closes, and a code whose window has closed is dropped rather than left on the page with a line through it. JPTE12 and JPTERF10 — 12% off Japan tours and 10% off Japan transport — were both printed on KKday's Japan hub with a booking window that ended on 30 June 2026, and neither is here for that reason.

Two conditions on this page disagree between KKday's own pages, and the card follows the page with the longer window: JPAT6 is printed with a USD30 floor and a booking window running to 31 March 2027 on the Made in Japan page, and with a USD40 floor running to 30 June 2026 on the Japan hub. Where the two differ, the Made in Japan page is the one still selling travel.

Last updated 17 October 2026