2026 Kyushu Onsen 6-Day Itinerary: Fukuoka, Beppu, Yufuin, Kumamoto & Nagasaki + eSIM

Why Fukuoka makes the perfect start and finish for a Kyushu loop

If you only have six days and you want a Kyushu onsen itinerary that doesn't waste a single train, start in Fukuoka. Hakata Station is the rail hub of the whole island, so you fly in, drop your bag, and you're already plugged into the network that carries you the rest of the way. From there the smart move is a clockwise loop: down to Beppu and Yufuin in Oita for the hot springs, across to Kumamoto for the castle, then out to Nagasaki on the coast — four prefectures, one circle, springs and food the whole way round.

Stella's general rule for this trip: keep your base nights low and let the trains do the moving. You sleep in Hakata, then an onsen town, then another, then two cities, and you come back to Fukuoka at the end to shop and fly out. The geography rewards a loop, not an out-and-back. Below is the exact order we'd run it.

The 6-day itinerary: how Fukuoka, Beppu, Yufuin, Kumamoto and Nagasaki connect

The connective tissue is simple once you see it. You enter through Hakata. The Limited Express Sonic runs you east to Beppu. A short bus hops you over the mountains to Yufuin. Then the scenic Yufuin no Mori train brings you back to Hakata, where you transfer onto the Kyushu Shinkansen south to Kumamoto, and later the Nishi-Kyushu Shinkansen out to Nagasaki. Every leg has a clear ticket behind it, which we break down further down the page.

Here's the day-by-day skeleton. Each row is one sleep, so you always know where your bag is going.

One seasonal note for summer travellers. If you land around mid-July, Hakata throws the Hakata Gion Yamakasa festival across the city centre from July 1 to 15, 2026. The climax, the Oiyama race, sets off before dawn on July 15 at 4:59 a.m., with floats weighing over a tonne hauled through the streets. Book Hakata rooms early if those dates are yours.

Beppu and Yufuin: hell tours and the lake-mist onsen town

Beppu doesn't ease you in. The Beppu Hells (Jigoku Meguri) are seven steaming pools you tour rather than bathe in. Umi Jigoku is the showpiece — a cobalt-blue spring sitting around 98°C and roughly 200 metres deep, with steam pouring off it even in summer. Chinoike Jigoku is its blood-red opposite. You can walk all seven in about two hours. Then head up to Kannawa Onsen, where the local move is jigoku-mushi: vegetables and seafood steamed over the natural vents. Eat there.

Yufuin's slower morning

The bus over the hills drops you into a different mood. Yufuin is small and walkable. Get to Kinrin Lake early — on a cool morning the mist rising off the water against Mount Yufu is the photo everyone comes for. Yunotsubo, the main street, fills with cafés and craft shops by mid-morning, so do the lake first, the street after. Book a ryokan with dinner and breakfast included; one night here is the soft centre of the whole loop.

Yufuin no Mori: the train is the activity

Some trains just move you. The Yufuin no Mori (the forest-green tourist express) is part of the trip in its own right. It runs Hakata to Yufuin in about 2 hours 15 minutes, a single fare of roughly 6,130 yen, with three services each way per day. The carriages lean into the theme — wood-panelled forest interiors and a raised observation car for the mountain stretches.

Kumamoto and Nagasaki: a castle that came back and a harbour that glows

Kumamoto Castle is the reason most people stop here, and it's a comeback story. After the 2016 earthquake the main keep has been fully restored and reopened, and the inside now has an elevator and step-free routes, so it's far easier to visit than it once was. Walk over to Kato Shrine next door for the best framed view of the keep.

Nagasaki by tram

Nagasaki packs its sights tight and links them with streetcars, so a one-day tram pass goes a long way. Glover Garden looks out over the port. Oura Church, built in 1864, is the oldest standing church in Japan — both a National Treasure and a World Heritage site, and worth the short uphill walk. Add Dejima, the old fan-shaped trading post, and Megane Bridge for its double-arch reflection. Save Mount Inasa for after dark; the ropeway up delivers one of Japan's most famous night views. And before you leave, eat champon in Shinchi Chinatown — it's the city's signature bowl.

Kyushu trains and rail passes: northern vs all-Kyushu

Most of this loop runs on Japan Railways, so the right pass saves real money. Here's how the legs and tickets line up.

Staying online in Kyushu: native unlimited vs roaming unlimited

You move every day on this loop, and every leg needs your phone: tracking the Sonic timetable, mapping the walk from a ryokan to Kinrin Lake, checking the tram in Nagasaki. So data isn't optional — it's the glue. We only put two unlimited plans side by side here, both fully unlimited for the whole trip, so you pick by how heavily you use it rather than by quota.

If you live in maps and want to upload onsen photos the moment you take them, the Japan native unlimited plan runs Local Breakout straight onto a local carrier. If your usage is lighter, or you're on an older handset, the Japan roaming unlimited plan keeps things simple. Want to see every option first? Browse the full Japan eSIM lineup, or read our deeper take on choosing the full-speed versus 10Mbps capped native plan before you decide.

Book your data before you fly and the Kyushu loop just flows

Two things to sort before you leave home. Reserve your Yufuin no Mori seats roughly a month out, because that train fills. And settle your rail pass and eSIM while you're still at your desk — you change cities almost every day, and you don't want to be hunting for a SIM counter at the airport. Get both done, and the moment you land at Fukuoka you can pull up the next Sonic departure and start sending onsen photos home. That's the whole point of doing the legwork early.