Cheapest eSIM for South Korea
The cheapest eSIM for South Korea right now is SimSmash, 50 GB for 30 Days at $20.40. That is $0.41 per GB.
1759 plans from 59 providers, watched and re-ranked by the real price per gigabyte. Every one is a prepaid travel eSIM for South Korea that you buy online and install before you fly, so it works the moment you land.
Swipe the table for price and verdict →
| Rank | Provider | Data | Validity | Price (USD) | Price per GB | Verdict | Get |
|---|---|---|---|---|---|---|---|
| Paid placement. It sits above the ranking and does not change it. Advertise here | SponsoredPaid placement. It sits above the ranking and does not change it. Advertise hereMegaEsim Coupon: ESIMWATCHDOG |
50 GB | 30 Days | $23.80 | $0.48 | Sponsored | Get |
| 1 | SimSmash | 50 GB | 30 Days | $20.40 | $0.41 | Best value | Get |
| 2 | ASIMGO Coupon: ESIMWATCHDOG10 |
5 GB | 3 Days | $2.12 | $0.42 | Best value | Get |
| 3 | ASIMGO Coupon: ESIMWATCHDOG10 |
10 GB | 3 Days | $3.77 | $0.42 | Best value | Get |
| 4 | AirPlans Coupon: ESIMWATCHDOG |
20 GB | 30 Days | $8.49 | $0.42 | Best value | Get |
| 5 | CocoRoam | 30 GB | 15 Days | $12.80 | $0.43 | Best value | Get |
| 6 | CocoRoam | 50 GB | 30 Days | $22.30 | $0.45 | Great | Get |
| 7 | SparkRoam Coupon: ESIMWATCHDOG5 |
50 GB | 30 Days | $22.70 | $0.45 | Great | Get |
| 8 | Travel eSIM | 50 GB | 30 Days | $22.76 | $0.46 | Great | Get |
| 9 | AdventureSIMs Charged in AUD Coupon: WATCHDOG |
50 GB | 30 Days | $23.49 | $0.47 | Great | Get |
| 10 | MegaEsim Coupon: SUMMER10 |
50 GB | 30 Days | $23.80 | $0.48 | Great | Get |
| 11 | Tourist eSIM | 50 GB | 30 Days | $23.98 | $0.48 | Great | Get |
| 12 | MobiMatter Coupon: ESIMWATCHDOG |
50 GB | 30 Days | $23.99 | $0.48 | Great | Get |
| 13 | AlpineSIM | 50 GB | 30 Days | $24.44 | $0.49 | Great | Get |
| 14 | Yatelo Coupon: ESIMWATCHDOG |
20 GB | 30 Days | $10.01 | $0.50 | Great | Get |
| 15 | MobiMatter Coupon: ESIMWATCHDOG |
30 GB | 30 Days | $14.99 | $0.50 | Great | Get |
| 16 | Wanderly Coupon: ESIMWATCHDOGWILDCARD |
30 GB | 10 Days | $14.99 | $0.50 | Great | Get |
| 17 | Connect Me Guru Coupon: hello-saun |
50 GB | 30 Days | $25.90 | $0.52 | Good | Get |
| 18 | Wanderly Coupon: ESIMWATCHDOGWILDCARD |
50 GB | 30 Days | $25.99 | $0.52 | Good | Get |
| 19 | eSIM Hero | 50 GB | 30 Days | $26.00 | $0.52 | Good | Get |
| 20 | Yatelo Coupon: ESIMWATCHDOG |
50 GB | 30 Days | $26.35 | $0.53 | Good | Get |
| 21 | SimSmash | 20 GB | 30 Days | $10.99 | $0.55 | Good | Get |
| 22 | SparkRoam Coupon: ESIMWATCHDOG5 |
20 GB | 30 Days | $11.26 | $0.56 | Good | Get |
| 23 | Tourist eSIM | 10 GB | 7 Days | $5.76 | $0.58 | Good | Get |
| 24 | AirPlans Coupon: ESIMWATCHDOG |
50 GB | 30 Days | $28.90 | $0.58 | Good | Get |
| 25 | Lempart Flex Coupon: ESIMWATCHDOG |
50 GB | 30 Days | $28.99 | $0.58 | Good | Get |
| 26 | AlpineSIM | 20 GB | 30 Days | $11.79 | $0.59 | Good | Get |
| 27 | Travel eSIM | 20 GB | 30 Days | $12.33 | $0.62 | Good | Get |
| 28 | Lempart Flex Coupon: ESIMWATCHDOG |
50 GB | 15 Days | $27.99 | $0.62 | Good | Get |
| 29 | HiRoaming Coupon: ESIMWATCHDOG20FIRST |
50 GB | 30 Days | $30.84 | $0.62 | Good | Get |
| 30 | Connect Me Guru Coupon: hello-saun |
20 GB | 30 Days | $12.70 | $0.64 | Okay | Get |
| 31 | eSIM Hero | 20 GB | 30 Days | $13.00 | $0.65 | Okay | Get |
| 32 | FlyEsim Coupon: ESIMWATCHDOG |
30 GB | 15 Days | $19.62 | $0.65 | Okay | Get |
| 33 | MyTravel eSIM | 50 GB | 30 Days | $32.50 | $0.65 | Okay | Get |
| 34 | MegaEsim Coupon: SUMMER10 |
10 GB | 30 Days | $6.58 | $0.66 | Okay | Get |
| 35 | Skyalo Coupon: ESIMWATCHDOG |
50 GB | 30 Days | $33.99 | $0.68 | Okay | Get |
| 36 | Lumbus Coupon: ESIMWATCHDOG10 |
50 GB | 30 Days | $33.99 | $0.68 | Okay | Get |
| 37 | FlyEsim Coupon: ESIMWATCHDOG |
50 GB | 30 Days | $34.20 | $0.68 | Okay | Get |
| 38 | AdventureSIMs Charged in AUD Coupon: WATCHDOG |
20 GB | 30 Days | $13.81 | $0.69 | Okay | Get |
| 39 | GigaPanda | 50 GB | 30 Days | $34.90 | $0.70 | Okay | Get |
| 40 | Earth Esim Coupon: ESIMWD5 |
50 GB | 30 Days | $35.00 | $0.70 | Okay | Get |
| 41 | eSIM4Travel | 20 GB | 30 Days | $14.20 | $0.71 | Okay | Get |
| 42 | eSIM4Travel | 10 GB | 30 Days | $7.30 | $0.73 | Okay | Get |
| 43 | Horizon eSIM | 3 GB | 7 Days | $2.22 | $0.74 | Okay | Get |
| 44 | eSIMCard Coupon: eSbljricbt |
20 GB | 30 Days | $14.78 | $0.74 | Okay | Get |
| 45 | Superalink Coupon: ESIMWATCHDOG |
1 GB | 1 Day | $0.75 | $0.75 | Okay | Get |
| 46 | Superalink Coupon: ESIMWATCHDOG |
5 GB | 2 Days | $3.74 | $0.75 | Okay | Get |
| 47 | Textr | 20 GB | 30 Days | $14.96 | $0.75 | Okay | Get |
| 48 | Soovia | 50 GB | 30 Days | $37.40 | $0.75 | Okay | Get |
| 49 | ByteSIM | 30 GB | 10 Days | $22.90 | $0.76 | Okay | Get |
| 50 | Horizon eSIM | 50 GB | 30 Days | $37.89 | $0.76 | Okay | Get |
| 51 | esim0 Coupon: WATCHDOG |
50 GB | 30 Days | $37.99 | $0.76 | Okay | Get |
| 52 | CloudOn | 50 GB | 30 Days | $37.99 | $0.76 | Okay | Get |
| 53 | eSIMCard Coupon: eSbljricbt |
50 GB | 90 Days | $38.89 | $0.78 | Okay | Get |
| 54 | Roamix Coupon: ESIMWATCHDOG |
50 GB | 30 Days | $38.90 | $0.78 | Okay | Get |
| 55 | Nomad | 50 GB | 30 Days | $39.00 | $0.78 | Okay | Get |
| 56 | SwipSIM | 50 GB | 30 Days | $39.19 | $0.78 | Okay | Get |
| 57 | ByteSIM | 10 GB | 5 Days | $7.90 | $0.79 | Okay | Get |
| 58 | Telekonek Coupon: ESIMWATCHDOG |
50 GB | 20 Days | $39.50 | $0.79 | Okay | Get |
| 59 | Lumbus Coupon: ESIMWATCHDOG10 |
20 GB | 30 Days | $15.99 | $0.80 | Fair | Get |
| 60 | Telekonek Coupon: ESIMWATCHDOG |
50 GB | 30 Days | $40.50 | $0.81 | Fair | Get |
993 of these 1759 plans were checked against the seller's own shop on 16 October 2026. The rest come from the seller's own feed or plan pages and are not yet independently checked.
The Watchdog Pick is chosen automatically: the lowest real price per GB of the 1759 plans in this view. Bulk data pools above 50 GB cannot win it, because their per GB rate only exists if you use data no traveller uses. Providers cannot pay for it, and a commission never changes the ranking. Prices are shown in USD and can change at checkout.
Price per GB counts only data you can use inside the validity, at most 3 GB a day, so a big pool on a short validity cannot buy the top spot. Every provider's best two plans come first, then the rest. A plan marked Unverified price undercuts every other provider here by more than half and waits at the end until we have checked it on the seller's site. How we rank
Unlimited rows show the daily amount at full speed. Some rows also show the speed after that amount. A row with no speed does not mean the plan stays fast, so check the plan on the seller's site.
Some links here earn us a commission. It never changes the order. How we make money The row marked Sponsored is a paid placement shown above the ranking, not part of it. Advertise here.
Crossing borders on this trip? Compare multi country Asia eSIM plans that keep one line working across several destinations.
Cheapest eSIM for South Korea: the numbers
As of 16 October 2026, 06:08 GMT, the cheapest eSIM for South Korea is SimSmash with 50 GB for 30 Days at $20.40. That is $0.41 per GB, the best rate of the 1759 plans we compare from 59 providers. 1196 plans include 5G. 655 support top ups. That timestamp is the exact moment of our latest price check, and the table above always shows the live order.
Which is the best eSIM for South Korea?
There is no single best eSIM for South Korea, because the right plan depends on how long you stay and how much data you use. What we can do is rank the 1759 plans on the numbers, as they stand on 16 October 2026:
- Best value overall SimSmash, 50 GB for 30 Days at $20.40. That is $0.41 per GB, the lowest real rate of every South Korea plan we track.
- Best for a short trip Superalink, 1 GB for 1 Day at $0.75. The cheapest ticket that still gives you at least 1 GB for a week or less.
- Highest daily cap on an unlimited plan SimSmash, 1 Day at $5.99, full speed up to 10 GB a day. Set that daily cap against the fixed plan above before you pay for the word unlimited.
None of these picks is chosen by a person. Each one is the first row of a sort on live prices, so it changes whenever a provider moves a price, and SimSmash did not pay to be named here.
Which mobile networks does South Korea have?
South Korea was the first country to launch commercial 5G and still ranks near the top globally for network quality. SK Telecom alone claims 5G coverage of about 99% of the population.
- SK Telecom: SK Telecom is the market leader with 5G coverage of roughly 99% of the population across all 17 regions, and it keeps winning best overall network awards.
- KT: KT leads on 5G download speeds, averaging over 480 Mbps, and was the first Korean carrier to deploy standalone 5G nationwide.
- LG U+: LG U+ posts the highest 5G availability at 90.3%, which shows up as a 5G signal that holds in subway tunnels and deep indoors.
Korea has plenty of budget MVNOs aimed at residents, but tourist SIMs and travel eSIMs run on the SKT, KT and LG U+ networks, so network quality is the same either way.
The eSIM plans we compare on this page connect to:
The list above is South Korea's operator market. The badges are the networks our tracked plans actually roam onto, which can be a subset of it, and the same network is sometimes sold to roaming partners under a different brand name. So a guide praising an operator you do not see badged here is describing a local SIM, not the travel eSIMs compared above.
Is 5G available in South Korea?
All three carriers run nationwide 5G, including in the Seoul metro. KT is the speed leader, LG U+ has the best availability, and coverage gaps are rare anywhere people live.
How much data do you need in South Korea?
Light use is about 500 MB a day. That covers maps, messages, and some browsing. Normal use with photos, social apps, and short videos runs 1 to 1.5 GB a day. Streaming and hotspot use can eat 2 to 3 GB a day. Here is what each size costs in South Korea right now:
Are unlimited eSIMs for South Korea really unlimited?
Not always. 691 of the 1759 plans above are sold as unlimited, and most of them carry a daily fair use cap. A further 69 plans are unlimited in a different way: one capped speed for the whole plan, shown next to the word Unlimited in the table. For South Korea the caps we can see published are 0.5 to 10 GB a day: past that the speed drops, often to 1 Mbps or less, until the clock resets. That is fine for messages and maps, slow for video. At $0.41 per GB from SimSmash, a fixed plan often works out cheaper than unlimited unless you genuinely burn several GB a day. That is why we rank by price per GB and not by the word on the label.
Here is what each seller on this page actually allows per day before it slows you down. No seller publishes this next to its rivals, which is exactly why it is worth showing.
Every seller that publishes a daily allowance is listed on our daily data caps page, with the cheapest plan at each one. The gap between the top and bottom of that table is the whole point. Two plans both sold as unlimited can differ several times over in what you actually get at full speed, and the cheaper one is not always the smaller allowance.
eSIM or a local SIM card at the airport in South Korea?
An eSIM is ready before you land. No queue, no shop, no handing over your passport at a counter for a tourist SIM card. Data for South Korea starts at $0.26 on this page, which is hard for airport kiosks to beat. A local SIM still makes sense if you need a local phone number or plan to stay for months. For a normal trip, the eSIM wins on price and effort.
Setting up your South Korea eSIM
Pick the plan, not the brandThe cheapest rate in South Korea today is $0.41 per GB from SimSmash, against a median of $1.44. The QR code arrives by email within minutes of paying.
Install before you flyScan the QR code on wifi at home. Installation needs a connection, and the one thing you will not have when you land in South Korea is a working connection.
Turn it on when you landEnable the eSIM and turn on data roaming for it, then give it a minute to attach to KT, LG U+, LG Uplus, LGU+, SK, SK Telecom, SKT, SKTelecom. Expect 5G where the network reaches, 4G everywhere else.
Know what happens when it runs out655 of the 1759 plans here can be topped up, so running out is not the end of the trip. If you would rather over buy than top up, the cheapest plan with at least 5 GB is ASIMGO at $2.12.
Good to know before you land in South Korea
Prepaid SIMs must be registered to your passport when you buy them. It is quick, but there is no anonymous option.
SK Telecom, KT and LG U+ have counters in the arrivals areas of both Incheon terminals, typically open 7am to 10pm. Expect 15,000 to 30,000 won for 7 to 30 days of unlimited data, with your passport needed at purchase.
If you spend a lot of time on the Seoul subway, plans on the LG U+ network hold 5G best underground. In practice all three networks are excellent nationwide.
South Korea Travel eSIM FAQ
Everything you need to know about using an eSIM in South Korea
What is the cheapest eSIM for South Korea?
Right now the cheapest option ranked by price per GB is SimSmash with 50 GB for 30 Days at $20.40. That works out to $0.41 per GB. Prices change often, so the table above is re-sorted at every price check.
Which is the best eSIM for South Korea?
It depends on the trip, so we rank rather than pick a favourite. On today's prices the best value for South Korea is SimSmash at $0.41 per GB, the lowest real rate of the 1759 plans we compare. For heavy daily use there are 691 unlimited plans, most with a daily fair use cap, and they only win if you genuinely burn several GB a day. Every pick on this page is the first row of a sort on live prices. No provider can pay to be named best.
Is eSIM available in South Korea?
Yes. We track 1759 prepaid travel eSIM plans from 59 providers that work in South Korea, roaming onto KT, LG U+, LG Uplus, LGU+, SK, SK Telecom, SKT, SKTelecom. You need a phone that supports eSIM and is not locked to a carrier; most iPhones from the XS onward and most flagship Android phones from 2019 on qualify.
Which networks will my eSIM connect to in South Korea?
The plans we compare connect to KT, LG U+, LG Uplus, LGU+, SK, SK Telecom, SKT, SKTelecom. The exact network depends on the plan you pick. Check the plan details before you buy if one network matters to you.
Do South Korea eSIMs support 5G?
1196 of the 1759 plans we track for South Korea include 5G where the local network offers it. The rest run on 4G, which is still fine for maps, calls over apps, and video.
Can I buy a South Korea eSIM online before I travel?
Yes, and you should. Every plan on this page is sold online and delivered by email as a QR code within minutes. Install it on wifi at home, leave the line switched off, and turn on data roaming for it when you land in South Korea. The validity clock on most plans only starts when the eSIM first connects.
Can I top up my South Korea eSIM if I run out?
Yes. 655 of the 1759 plans here support top ups, so you can add data without buying a new eSIM. The rest need a fresh plan once the data ends.
Is an eSIM cheaper than a local SIM card in South Korea?
For a trip of days or weeks, usually yes. Data for South Korea starts at $0.26 for 100 MB on this page, with no queue, no shop and no passport handed over at a counter. A local SIM card can still win if you stay for months or need a local phone number.
Will I still receive bank SMS and OTP codes?
Yes, if you keep your home SIM active. Travel eSIMs are data only. Your phone can hold both at once, so leave your normal SIM on for SMS and use the eSIM for data. Turn off roaming data on the home SIM to avoid charges.
Do these eSIMs include a phone number or calls?
The plans we compare are data only, so there is no local number. Calls work fine over WhatsApp, FaceTime, or any app that uses data. If you need a real local number, a local SIM is the better tool.
Does a South Korea eSIM work on iPhone and Android?
Yes, on any carrier unlocked phone with eSIM support: iPhone XS or newer, Google Pixel 3 or newer, Samsung Galaxy S20 or newer and most recent flagships. The plans are identical on both; only the install steps differ, and both take about a minute on wifi.
How many GB do I need for a week in South Korea?
Around 3 to 5 GB covers a week of maps, messaging, and normal browsing. Heavy video or hotspot use needs 1 to 2 GB per day. Today the cheapest plan with at least 5 GB is ASIMGO at $2.12.
Which South Korea eSIM gives the most data per day?
Of the plans sold as unlimited here, SimSmash allows the most at full speed, 10 GB a day from $5.99. The smallest allowance on this page is 500 MB a day, from 8 sellers. Every one of them is advertised as unlimited, and past the daily allowance the speed drops, often to 1 Mbps or less, until the next day. Check the allowance, not the word.
Travelling further? Compare nearby destinations
JapanFrom$0.40/GB
MalaysiaFrom$0.29/GB
IndonesiaFrom$0.41/GB
ThailandFrom$0.37/GB
Hong KongFrom$0.33/GB
ChinaFrom$0.44/GB
Or see every country on the cheapest eSIM index and track weekly movement on the eSIM Price Index.
How we rank
Prices last checked on 16 October 2026, 06:08 GMT across 1759 plans. Every plan is ranked by the true cost per gigabyte, not marketing claims. We do not take money for rankings, and providers cannot pay for a higher position. Read the full method on our how we rank page.
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