# Best eSIM for South Korea

> The cheapest eSIM plan for South Korea by trip length and data use.

Page: https://esimnest.com/south-korea/best-esim/ · Data as of: 2026-10-14 · Prices: US dollars

161 eSIM plans work in South Korea, from $0.47. This page picks the cheapest plan that covers each trip length and level of use. Prices from the eSimNest catalogue on 2026-10-14; eSimNest sells these plans.

For a week of everyday use, the cheapest eSIM plan that covers it is South Korea 10GB 30Days: 10 GB for 30 days for $7.33.

For a three-day trip with light use, South Korea 1GB 7Days covers it for $1.09 (1 GB for 7 days).

## The cheapest plan that covers your trip

Each cell is the cheapest plan made for South Korea with enough data for the trip, as on the South Korea page. Light use: about 0.3 GB a day; Everyday use: about 1.0 GB a day; Heavy use: about 2.5 GB a day.

| Trip | Light use | Everyday use | Heavy use |
| --- | --- | --- | --- |
| 3 days | [South Korea 1GB 7Days](https://esimnest.com/south-korea/#plan-south-korea-1gb-7days): 1 GB for 7 days, $1.09 | [South Korea 3GB 15Days](https://esimnest.com/south-korea/#plan-south-korea-3gb-15days): 3 GB for 15 days, $2.65 | [South Korea 3GB/Day FUP1Mbps Unlimited](https://esimnest.com/south-korea/#plan-south-korea-3gbday-fup1mbps-unlimited): 3 GB a day for 3 days, then slower, $7.20 |
| 7 days | [South Korea 3GB 15Days](https://esimnest.com/south-korea/#plan-south-korea-3gb-15days): 3 GB for 15 days, $2.65 | [South Korea 10GB 30Days](https://esimnest.com/south-korea/#plan-south-korea-10gb-30days): 10 GB for 30 days, $7.33 | [South Korea 20GB 30Days](https://esimnest.com/south-korea/#plan-south-korea-20gb-30days): 20 GB for 30 days, $12.79 |
| 14 days | [South Korea 5GB 30Days](https://esimnest.com/south-korea/#plan-south-korea-5gb-30days): 5 GB for 30 days, $4.21 | [South Korea 20GB 30Days](https://esimnest.com/south-korea/#plan-south-korea-20gb-30days): 20 GB for 30 days, $12.79 | [South Korea 50GB 30Days](https://esimnest.com/south-korea/#plan-south-korea-50gb-30days): 50 GB for 30 days, $24.48 |
| 30 days | [South Korea 10GB 30Days](https://esimnest.com/south-korea/#plan-south-korea-10gb-30days): 10 GB for 30 days, $7.33 | [South Korea 50GB 30Days](https://esimnest.com/south-korea/#plan-south-korea-50gb-30days): 50 GB for 30 days, $24.48 | [South Korea - Unlimited - 30 days](https://esimnest.com/south-korea/#plan-south-korea-unlimited-30-days): unlimited data for 30 days, $38.54 |

## The cheapest is not the only choice

### 7 days, everyday use

- Cheapest South Korea plan: [South Korea 10GB 30Days](https://esimnest.com/south-korea/#plan-south-korea-10gb-30days), $7.33, 10 GB for 30 days; it works only in South Korea.
- Cheapest unlimited plan: [South Korea 1GB/Day Unlimited](https://esimnest.com/south-korea/#plan-south-korea-1gbday), $8.75, 1 GB a day for 7 days, then slower; it works only in South Korea.
- Next cheapest: [Asia - 10 GB - 30 days](https://esimnest.com/south-korea/#plan-asia-10-gb-30-days-5), $7.96, 10 GB for 30 days; it also covers other countries in the region.
- Next cheapest: [South Korea 1GB/Day FUP1Mbps Unlimited](https://esimnest.com/south-korea/#plan-south-korea-1gbday-fup1mbps), $8.75, 1 GB a day for 7 days, then slower; it works only in South Korea.

### 14 days, everyday use

- Cheapest South Korea plan: [South Korea 20GB 30Days](https://esimnest.com/south-korea/#plan-south-korea-20gb-30days), $12.79, 20 GB for 30 days; it works only in South Korea.
- Cheapest overall (also works outside South Korea): [Asia - 20 GB - 30 days](https://esimnest.com/south-korea/#plan-asia-20-gb-30-days), $12.17, 20 GB for 30 days; it also covers other countries in the region.
- Cheapest unlimited plan: [South Korea 1GB/Day Unlimited](https://esimnest.com/south-korea/#plan-south-korea-1gbday), $17.50, 1 GB a day for 14 days, then slower; it works only in South Korea.
- Next cheapest: [South Korea - 20 GB - 30 days](https://esimnest.com/south-korea/#plan-south-korea-20-gb-30-days), $14.98, 20 GB for 30 days; it works only in South Korea.
- Next cheapest: [South Korea 20GB 30Days (nonhkip)](https://esimnest.com/south-korea/#plan-south-korea-20gb-30days-nonhkip), $15.84, 20 GB for 30 days; it works only in South Korea.

## Networks these plans use

KT, LG Uplus, LGU+, LGUplus, SK, SK Telecom, SKT, SKTelecom

## Questions

### What is the cheapest eSIM for a week in South Korea?

For a week of everyday use (about 7 GB), South Korea 10GB 30Days is the cheapest plan that covers it at $7.33: 10 GB for 30 days, and it works only in South Korea.

### How much data do I need in South Korea?

We assume 2.1 GB for a week of light use (maps and messaging), 7 GB for everyday use (adds social media, music and some video) and 17.5 GB for heavy use with a lot of video. Your own habits decide, so the data calculator lets you change the hours.

### Is an unlimited plan worth it for two weeks in South Korea?

The cheapest unlimited plan for two weeks is South Korea 1GB/Day Unlimited at $17.50, against $12.79 for South Korea 20GB 30Days (20 GB for 30 days). Unlimited plans often slow down after a daily allowance, so read the plan details.

### Which eSIM is cheapest for a month in South Korea?

For 30 days of everyday use the cheapest plan that covers it is South Korea 50GB 30Days at $24.48 (50 GB for 30 days). For a longer stay, the long-stay page lists plans valid for 90 days or more.

More: [South Korea travel eSIM guide](https://esimnest.com/south-korea/guide/), [all eSIM plans for South Korea](https://esimnest.com/south-korea/), [data calculator](https://esimnest.com/data-calculator/?destination=south-korea).