Can I edit destinations later?
Yes. Re-run the planner anytime with new trip lengths or toggle nationwide JR passes on/off without losing previous results.
Pick a primary destination and length of stay. We find the passes that cover it best, estimate savings, and warn when regular tickets are cheaper.
Single-city stays or hub-and-spoke trips (e.g., Kyoto with side trips) where you want a fast check before booking trains.
You have a multi-city route, open-jaw flights, or want to compare multiple side trips at once. Smart Plan handles natural-language itineraries.
Fare benchmarks are refreshed at least quarterly, and sooner if operators announce price changes. Corrections are welcome via Contact.
Yes. Re-run the planner anytime with new trip lengths or toggle nationwide JR passes on/off without losing previous results.
We benchmark against the latest published base fares. Seasonal surcharges and seat classes can change totals; always confirm before purchase.
No. Inputs stay in your browser. Clearing your cache or switching devices removes any saved preferences.
Still unsure which tool to use? Read our Transportation Guide or message us via the Contact page.