Capped data plans
Ranked by price per gigabyte. Only plans valid for the trip length shown are included.
| Provider | Data | Valid | Price | Per GB | Network | Buy |
|---|---|---|---|---|---|---|
| Roamless | 50 GB | 30 days | $48.95 | $0.98/GB | SK Telecom LTE | View deal |
| Yesim | 30 GB | 30 days | $33.93 | $1.13/GB | — | View deal |
| Yesim | 20 GB | 30 days | $27.07 | $1.35/GB | — | View deal |
| Roamless | 20 GB | 30 days | $29.95 | $1.50/GB | SK Telecom LTE | View deal |
| Airalo | 20 GB | 30 days | $30.00 | $1.50/GB | SK 5G | View deal |
| SimAbove | 20 GB | 30 days | $30.21 | $1.51/GB | — | View deal |
| Saily | 20 GB | 30 days | $30.78 | $1.54/GB | — | View deal |
| Instabridge | 20 GB | 7 days | $33.70 | $1.68/GB | — | View deal |
| GigSky | 10 GB | 30 days | $17.79 | $1.78/GB | KT,SK Telecom 5G | View deal |
| Yesim | 10 GB | 30 days | $18.59 | $1.86/GB | — | View deal |
| Roamless | 10 GB | 30 days | $18.95 | $1.90/GB | SK Telecom LTE | View deal |
| Airalo | 10 GB | 30 days | $19.00 | $1.90/GB | SK 5G | View deal |
Unlimited data plans
Ranked by price per day. Unlimited plans have no price per gigabyte, so they are never mixed with the capped list above.
| Provider | Data | Valid | Price | Per day | Network | Buy |
|---|---|---|---|---|---|---|
| Holafly | Unlimited | 90 days | $149.77 | $1.66/day | — 5G | View deal |
| Holafly | Unlimited | 89 days | $148.61 | $1.67/day | — 5G | View deal |
| Holafly | Unlimited | 88 days | $147.45 | $1.68/day | — 5G | View deal |
| Holafly | Unlimited | 87 days | $146.29 | $1.68/day | — 5G | View deal |
| Holafly | Unlimited | 86 days | $145.13 | $1.69/day | — 5G | View deal |
| Holafly | Unlimited | 85 days | $143.96 | $1.69/day | — 5G | View deal |
| Holafly | Unlimited | 84 days | $142.80 | $1.70/day | — 5G | View deal |
| Holafly | Unlimited | 83 days | $141.64 | $1.71/day | — 5G | View deal |
| Holafly | Unlimited | 82 days | $140.48 | $1.71/day | — 5G | View deal |
| Holafly | Unlimited | 81 days | $139.32 | $1.72/day | — 5G | View deal |
| Holafly | Unlimited | 80 days | $138.15 | $1.73/day | — 5G | View deal |
| Holafly | Unlimited | 79 days | $136.99 | $1.73/day | — 5G | View deal |
The short answer
Written to stand on its own, so it stays true wherever it gets quoted.
As of 4 September 2026, the cheapest travel eSIM for South Korea is SimAbove at $1.74 for unlimited data valid 1 day, out of 164 plans from 8 providers (SimAbove, Instabridge, Yesim, GigSky, Roamless, Airalo, Saily, Holafly). For unlimited data, SimAbove is cheapest at $1.74 for 1 day ($1.74 per day).
By the numbers
Figures written to be quoted whole — each carries its own units, scope and date.
Across 33 capped plans for South Korea, cost per gigabyte ranges from $1.13 to $5.23, a 4.6x spread, with a median of $2.20. Checked 4 September 2026.
Common questions
What is the cheapest eSIM for South Korea?
The cheapest travel eSIM for South Korea is SimAbove at $1.74 for unlimited data over 1 days. Prices were last checked on 4 September 2026.
Which South Korea eSIM has the lowest cost per GB?
Roamless offers the lowest cost per gigabyte for South Korea at $0.98 per GB (50 GB for $48.95 over 30 days).
Is there an unlimited data eSIM for South Korea?
Yes. The cheapest unlimited-data eSIM for South Korea is SimAbove at $1.74 for 1 days, which works out at $1.74 per day.
How many eSIM providers cover South Korea?
This page compares 164 plans from 8 providers for South Korea: SimAbove, Instabridge, Yesim, GigSky, Roamless, Airalo, Saily, Holafly.
What the terms mean
Defined here so a price can be read correctly rather than guessed at.
- eSIM
- A SIM profile downloaded to a phone rather than inserted as a plastic card. A travel eSIM sells data in a destination without changing the phone's usual number.
- Throttled unlimited
- A plan whose data never runs out but which drops to a reduced speed after a stated full-speed allowance. It is not equivalent to an uncapped plan.
- Price per gigabyte
- The total plan price divided by its data allowance, used to compare capped plans of different sizes. It cannot be calculated for unlimited plans.
- Price per day
- The total plan price divided by its validity in days, used to compare unlimited plans, which have no per-gigabyte figure.
- KYC
- Identity verification some providers require before a plan can be activated, typically a passport scan.
- Top-up
- The ability to add more data to an eSIM already installed, rather than buying a new one.
How these prices were collected
This page compares 164 plans from 8 providers for South Korea. Prices are collected automatically from each provider and were last checked on 4 September 2026. Figures are converted to USD so they can be compared; you are charged in the provider's own currency at their rate. Links to providers are affiliate links.