Best eSIM for South Korea in 2026: prices compared
A 5 GB, 30-day South Korea eSIM from eSIMology costs £6.99 on LG Uplus and SKTelecom with 5G. The same 5 GB for 30 days costs £8.50 at Airalo and £8.49 at Saily; Holafly sells unlimited plans only, from £11.00 for 3 days. Prices checked 7 November 2026.
Four things decide the right South Korea eSIM for your trip: the networks it runs on, whether it uses 5G, how much data you need, and what speed you get once a daily allowance runs out. eSIMology's plans run on LG Uplus and SKTelecom.
South Korea eSIM prices compared
| Trip | eSIMology | Airalo | Holafly | Saily | Buy |
|---|---|---|---|---|---|
| 3 GB · 30 days | £4.99 | – | Unlimited only | £6.99 | Buy |
| 5 GB · 30 days | £6.99 | £8.50 | Unlimited only | £8.49 | Buy |
| 10 GB · 30 days | £10.99 | £15.00 | Unlimited only | £14.49 | Buy |
| 20 GB · 30 days | £18.99 | £23.50 | Unlimited only | £22.99 | Buy |
Rival prices from each provider's own South Korea page, as shown to a UK visitor (GBP, VAT included), read 7 November 2026. Our prices are live; pay in pounds, euros or dollars.
What you get from each
| What you get | eSIMology | Airalo | Holafly | Saily |
|---|---|---|---|---|
| Buy without an account | Yes: guest checkout, no app | Account needed before checkout | Yes: guest checkout | App sign-in needed to install |
| Refunds on unused eSIMs | Full refund to your card within 30 days | In the app as Airmoney credit; card refunds by request | Full if not activated, within 6 months; $3.50 fee on partial refunds | Full within 30 days if not installed |
| Speed after a daily cap | Printed on every plan | “Slows”, no speed given | No speed given | 1 Mbps, in its terms |
| Fixed-GB data plans | Yes, with the price per GB | Yes | No: unlimited by the day only | Yes |
| Data left and top-up | On a web page, no app | In the app | In the app | In the app |
| Phone check before paying | Checks the phone you're on at checkout | A list of phones | *#06# test and a list | A list by brand |
| Install | One tap on iPhone, QR code or codes, by email | In the app, QR code or codes | One tap in the app, QR code or codes | App-guided |
| Currencies | GBP, EUR, USD | 16 currencies, often charged in USD | USD and EUR in the app | GBP, USD, EUR, CHF |
From each provider's own public pages. Full comparison
What makes a good South Korea eSIM?
- Networks and 5G: Check which networks your eSIM uses before you buy. eSIMology's plans run on the two networks named above, with 5G where the network offers it.
- Plan size for your trip: Start with how much data you need. On a 7-day trip, light use (about 1.8 GB in all) suits 2 GB for 15 days, standard use (about 4.9 GB in all) suits 5 GB for 30 days, and heavy use (about 12.6 GB in all) suits 20 GB for 30 days. For 14 days, the matches are 5 GB for 30 days, 10 GB for 30 days and 50 GB for 30 days. Heavy users can also choose a daily allowance, up to 10 GB a day.
- Speed after the daily allowance: On daily allowance plans, speed drops to 512 Kbps once that day's allowance is used. eSIMology prints this speed on every plan.
- Where data goes and top-ups: Your data reaches the internet through Singapore. Most plans can be topped up, and data left shows on a web page, with no app needed.
Fixed GB, daily or unlimited: which South Korea eSIM fits your trip?
Start with how many days you're away and how much you'll use your phone each day.
- A 3-day Seoul and Incheon trip with light use: 500 MB a day for 3 days fits light use, about 0.8 GB in all. Ride apps Kakao T and Uber are both used in Seoul, and KakaoTalk is the messaging app to expect.
- A 7-day Busan, Gyeongju and Jeju Island trip: standard use suits 5 GB for 30 days, eSIMology's pick for that length. eSIMology's plans run with 5G where the network offers it.
- A month in Seoul with heavy use: 2 GB a day for 30 days is the heavy pick. For more, eSIMology's daily allowances go up to 10 GB a day and fixed plans up to 50 GB for 30 days. See how much data you need.
- A two-week trip where you want unlimited data by the day: Holafly sells unlimited plans by the day only, in 3 to 30 day lengths. Airalo sells fixed-GB and unlimited plans by the day, in the same 3 to 30 day lengths. Saily sells both too, with unlimited plans from 5 to 365 days.
South Korea eSIM prices: questions
Which is cheaper for 5 GB over 30 days in South Korea?
For 5 GB over 30 days in South Korea: eSIMology £6.99, Saily £8.49, Airalo £8.50. Holafly sells unlimited plans only. Rival prices from their own South Korea pages, read 7 November 2026; ours are live.
Can I get a refund on an unused South Korea eSIM?
eSIMology: Full refund to your card within 30 days. Airalo: In the app as Airmoney credit; card refunds by request. Holafly: Full if not activated, within 6 months; $3.50 fee on partial refunds. Saily: Full within 30 days if not installed.
Do I need an app to check my data in South Korea?
eSIMology: On a web page, no app. Airalo: In the app. Holafly: In the app. Saily: In the app.
Which networks does a South Korea eSIM from eSIMology use?
It connects to LG Uplus and SKTelecom in South Korea, with 5G where the network has it. Your phone picks the strongest signal by itself.
Is an unlimited or a fixed-GB eSIM better for South Korea?
It depends on how you use data. eSIMology sells fixed-GB plans, with the price per GB shown, and daily allowances from 500 MB to 10 GB a day. After a daily allowance, speed drops to 512 Kbps. Airalo, Holafly and Saily all sell unlimited plans by the day.
Can I top up a South Korea eSIM?
Most eSIMology plans can be topped up. You check data left and top up on a web page, with no app needed. Airalo, Holafly and Saily do both in their apps.
Get your South Korea eSIM
From £3.99 / €3.99 / $4.99. Delivered by email in seconds, installed in two minutes, and refunded in full if you never install it.