By Hanna · Updated October 19, 2026

Japan travel guide: what to know before you go

Japan travel guide hero image

Japan is easiest to visit with a data-only eSIM set up before you land, since physical SIM registration is difficult for short-term visitors. Most travelers spend 7-14 days and budget $100-150/day outside accommodation.

Japan quick facts

Visa
Depends on your passport
Check your visa rules →
Plugs & voltage
Type A, B · 100V
Do I need an adapter? →
Currency
Japanese Yen (JPY)
Live exchange rate →
Flight time to Tokyo (HND)
London: ~11h 45m (9,590 km)
New York: ~13h 20m (10,880 km)
From your city →
Mobile data
Size your eSIM before you fly
Calculate your data →

Flight times are nonstop estimates. Plug and currency data come from my travel tools.

Japan rewards planning, but it doesn’t have to be complicated. Here’s what I’d tell a friend before their first trip.

Best time to visit

Spring and autumn are the sweet spots for weather and scenery, though both are also the busiest and most expensive.

Getting around

The Japan Rail Pass is worth it if you’re covering multiple cities. Within cities, IC cards (Suica or Pasmo) work on nearly everything — trains, buses, and even vending machines.

Top things to do

Budget tips

Convenience store food (konbini) is genuinely good and can cut your food budget significantly. Capsule hotels and business hotels are far cheaper than Western-style hotels and perfectly comfortable for solo travelers.

Where to stay

Stay near a JR line station to minimize transfers — this matters more than neighborhood prestige for a first trip.

Staying connected

Staying connected in Japan

eSIM plans for Japan
ProviderDataValidityPriceGet plan
Airalo10GB30 days$27View plan
Ubigi20GB30 days$39View plan
  • Airalo: Best value for a single trip under 2 weeks. Use code ANN6497 for $3 off.
  • Ubigi: Good if you plan to hotspot for a laptop.

Prices and plans are affiliate links; HannaTrip may earn a commission at no extra cost to you.

Planning a longer Asia trip? South Korea pairs naturally with Japan for a two-country itinerary.

Where else to go

If Japan is on your list, also consider South Korea, Thailand, and Vietnam.

Frequently asked questions

Do I need to unlock my phone for a Japan eSIM?

Most phones bought outright are already unlocked. Check your phone's settings under Mobile/Cellular for an eSIM option; if it's missing, your device may be carrier-locked.

Can I make phone calls with a data-only eSIM?

No, data-only eSIMs cover internet access only. Use an app like WhatsApp or LINE for calls over data instead.