We ran this route through the planner with 7 days in each country and standard use. Change the days or the usage and the numbers update.
Japan
South Korea
14 days
Standard · about 11.2 GBCheapest for this route: $26.00 with 2 eSIMs
One plan per country · 1 eSIM swap
Japan · 7 days1South Korea · 7 days2One plan for the whole route · No eSIM swap
Japan · 7 daysSouth Korea · 7 daysPrices in US dollars, read from each provider on October 5, 2026. They change often: confirm on the provider page before paying. Only price and fit to your route decide the order of results.
Open the full route plannerTokyo and Seoul are a short flight apart, so the two countries are often visited on one trip. They are separate markets with separate networks, and a Japan plan does nothing in Korea. Both are 4G and 5G countries: Japan closed its last 3G network in March 2026 and Korea's largest operator has begun winding its own down. The apps differ too, with LINE the default messenger in Japan and KakaoTalk in Korea.
7 days in each country, 14 days in total.
| Usage | Data | Cheapest option | Total |
|---|---|---|---|
| LightMaps & messages | 4.9 GB | One plan for the whole route: Yesim Asia Pacific | $12.00 |
| StandardSocial media | 11.2 GB | One plan per country: Ubigi (Japan) + Ubigi (South Korea) | $26.00 |
| HighVideo & work | 25.2 GB | One plan for the whole route: Ubigi Best Asia | $45.00 |
27 regional or global products list both countries.
| Provider | Product | Countries | Price | See plan |
|---|---|---|---|---|
| Ubigi | Asia | 26 | From $2.00 | See plan → |
| Ubigi | Best Asia | 17 | From $2.00 | See plan → |
| Holafly | Asia | 16 | From $3.90 | See plan → |
| Airalo | Asialink | 18 | From $4.00 | See plan → |
| Nomad | APAC (14 countries plan) | 14 | From $4.00 | See plan → |
| Nomad | China-Japan-Korea | 3 | From $4.00 | See plan → |
| Saily | Asia & Oceania (22 countries) | 22 | From $4.99 | See plan → |
| aloSIM | Asia | 14 | From $5.00 | See plan → |
| Ubigi | Best World | 178 | From $5.00 | See plan → |
| Holafly | Japan and Korea | 2 | From $5.90 | See plan → |
| Nomad | APAC (21 countries plan) | 21 | From $7.00 | See plan → |
| Ubigi | World | 201 | From $7.00 | See plan → |
| Yesim | Asia Pacific | 16 | From $8.40 | See plan → |
| Airalo | Discover | 159 | From $8.50 | See plan → |
| Saily | Global (121 countries) | 121 | From $8.99 | See plan → |
| Airalo | Discover+ | 162 | From $9.00 | See plan → |
| Holafly | Global | 141 | From $9.50 | See plan → |
| aloSIM | Global | 146 | From $10.00 | See plan → |
| Vodafone Travel eSIM | Asia eSIM | 22 | From $11.00 | See plan → |
| Nomad | Global | 123 | From $12.00 | See plan → |
Prices in US dollars, read from each provider on October 5, 2026. They change often: confirm on the provider page before paying. Only price and fit to your route decide the order of results.
Yes, if the plan lists both. 27 of the products we track do, starting at $2.00. Whether that beats two local plans depends on your days and usage: the planner on this page shows both totals.
With 7 days in each country and standard use (about 11.2 GB), the cheapest option on October 5, 2026 was Ubigi (Japan) + Ubigi (South Korea) at $26.00. The cheapest single plan covering both was $33.00.
