Best eSIM for South Korea in 2026: 6 Providers Compared (Real Prices)
By Ploy Suwannakit · Aug 8, 2026 · 5 min read
Key prices on this page are pulled live and update automatically
Seoul's subway wifi is fast enough that you could almost forget you need your own data at all — until you're standing outside Gyeongbokgung Palace trying to pull up a map, or on a KTX train between cities with no wifi in sight. I checked live pricing across 123 providers we track for South Korea, and the picture has shifted since I first wrote this: two providers most people haven't heard of now dominate unlimited pricing here.
The quick answer
- Cheapest short-trip unlimited (around 3 days): eSIMCard at $7.04, well ahead of Maya Mobile's $9.99.
- Cheapest week of unlimited, by far: 4S eSIM at $6.92 — a genuine outlier, dramatically cheaper than every other 7-day unlimited option we checked.
- Cheapest unlimited for a full month: eSIMCard at $41.15, ahead of Ubigi's $49.00 and Maya Mobile's $49.99.
- Cheapest entry point: Saily's 1GB/7-day plan at $3.99.
- Notable standout: Ubigi charges the exact same $14.00 for both its 10GB and 20GB 30-day tiers — there's no reason to pick the smaller one.
South Korea price comparison
Full comparison →
Comparison by eSIMKart
Live South Korea deals right now
Public promo codes from providers selling South Korea eSIMs — pulled live from our deals list, so this section updates itself and disappears when nothing is running.
Stay connected in 200+ countries the moment you land — skip the roaming bills and SIM swaps on your very first trip.
New customers only, first order; the discount is capped at $3 per Airalo's terms.
Get 50% off your first purchase, capped at $15. Applied automatically at checkout, no code needed.
What you'll actually pay: six providers compared
eSIMCard
The unlimited-data value pick across most durations — $7.04 for 3 days and $41.15 for a full month, both well ahead of Maya Mobile and Ubigi at the same lengths. The one spot it doesn't win outright is the 7-day mark, where 4S eSIM undercuts it dramatically.
4S eSIM
The standout at exactly one week: $6.92 for 7 days of unlimited data is roughly half the price of anything else on this list at that length — worth checking specifically if your trip runs close to a week. Its 30-day tier isn't competitive, though, so switch to eSIMCard once you're past two weeks.
Airalo
Airalo has the deepest fixed-data lineup of the six for South Korea, with real tiers at 3, 5, 7, 10, 15, and 30 days. Fixed data runs from 1GB/3-days at $4.00 up through 50GB/30-days at $49.00, with a 3GB/7-day option at $9.00 and a 10GB/7-day option at $18.00 in between.
Saily
Saily's 1GB/7-day plan at $3.99 is the cheapest fixed-data single tier we found for South Korea — good for a short layover or a trip where you mostly rely on hotel wifi. Its unlimited range runs from $18.99 (5 days) up to $59.99 (30 days), and the fixed 30-day tiers are solid: 20GB at $29.99, 10GB at $18.99, 5GB at $10.99.
Ubigi
Ubigi's 30-day fixed tiers are sharply priced — 10GB and 20GB both cost exactly $14.00 for 30 days, which makes the 20GB option a clear pick over the smaller one. Its unlimited 30-day plan at $49.00 no longer leads the field the way it once did, but it's still competitive with Maya Mobile. On top of that, Ubigi sells a 60GB annual plan for $49.00 — a genuinely rare option if you're relocating rather than visiting.
Maya Mobile
Maya's flat global rate — $9.99 for 3 days, $19.99 for 7 days, $27.99 for 14 days, $49.99 for 30 days — is no longer the cheapest unlimited option at any duration we checked, but its flat global rate and brand recognition still make it a reasonable, simple pick.
Why the prices are all over the place
Airalo, Saily, and Ubigi all mix fixed-data tiers with unlimited, which is where a lot of the real value hides — Ubigi's identical pricing for its 10GB and 20GB tiers isn't something you'd guess without checking the actual numbers. On the unlimited side, Maya Mobile's flat global rate and Ubigi's destination-specific pricing used to be the two names worth comparing, but eSIMCard and 4S eSIM now both price South Korea specifically and undercut both of them at most durations.
My honest take: South Korea's network infrastructure is dense enough — even outside Seoul, in Busan or on Jeju Island — that most travelers get by comfortably on 10-20GB for a normal trip rather than needing unlimited at all. Our data usage guide walks through how to estimate your own usage before you buy.
How to pick based on your trip
- A short trip (around 3 days): eSIMCard at $7.04, well ahead of Maya Mobile at the same length.
- About a week: 4S eSIM's $6.92 is dramatically cheaper than any other 7-day unlimited option we track.
- A full month, fixed data is enough: Ubigi's 20GB/30-day plan at $14.00 is the standout of the fixed-data comparison — the same price as their 10GB tier, so there's no reason to choose the smaller one.
- A full month, you want unlimited: eSIMCard at $41.15, ahead of Ubigi and Maya Mobile at the same length.
- You're relocating or staying long-term: Ubigi's 60GB/12-month annual plan at $49.00 is a rare option among the providers we track.
A few things worth knowing before you buy
South Korea has some of the densest, fastest mobile infrastructure in the world — coverage in Seoul, Busan, Incheon, and even smaller cities and Jeju Island is consistently strong, so you're unlikely to run into the coverage gaps that show up in more rural destinations.
Install before you fly. Every provider here lets you activate the eSIM only once you land, so there's no need to hunt for airport wifi on arrival at Incheon.
Check your phone is eSIM-compatible and carrier-unlocked first — our compatibility guide takes about a minute.
If this is your first time using an eSIM, our beginner's guide to how eSIMs work covers installation and activation from the very start.
See the full, live list of South Korea eSIM plans sorted by price, if you want to compare exact tiers side by side.
Cheapest South Korea eSIM plans right now
Live prices-
Roamable100MB · 7 daysGet eSIM$0.10 -
abesteSIMUnlimited · 1 dayGet eSIM$0.41 -
ASimGoUnlimited · 1 dayGet eSIM$0.54 -
Superalink100MB · 1 dayGet eSIM$0.63
Ploy is a Bangkok-based travel writer covering Southeast and East Asia, from Chiang Mai co-working cafes to overnight trains in Vietnam. She's tested more late-night airport SIM kiosks than she'd like to admit, which is exactly why she writes about eSIMs now.
Frequently asked questions about South Korea eSIMs
What is the cheapest eSIM for South Korea?
Right now the cheapest South Korea eSIM on eSIMKart is abesteSIM's Unlimited plan for 1 day at $0.41. Prices from 123 providers are re-checked automatically every day, so this answer updates itself.
Is there an unlimited data eSIM for South Korea?
Yes — 2787 unlimited-data plans cover South Korea. The cheapest is abesteSIM's 1 day unlimited plan at $0.41. Most unlimited plans apply a fair-use speed cap after heavy daily use, so check the provider's terms.
How many providers sell eSIMs for South Korea?
123 providers currently list 9661 plans for South Korea, from $0.41 to $995.80. Every plan links straight to the provider's own checkout — eSIMKart compares, it doesn't resell.
How long does a South Korea eSIM last?
Validity ranges from 1 to 730 days. Pick a plan that covers your whole stay — validity usually starts on first connection, and most plans can't be paused.
Which South Korea eSIM providers offer 5G?
abesteSIM, AirPlans, ASimGo, co:sim, Dingo, Esimatic, eSimHero, eSIMzio, Eskimo, ETravelSim, Flysimio, GigSky, Globie, Gohub, JamboSim, Lempart Flex, Maya Mobile, MegaEsim, MicroEsim, MoodSIM, PikaSim, Roamable, Roamix, Roamless, Simbye, SimSmash, Skyalo, Textr eSIM, Tripuck, Virgin Connect, Yatelo (31) report 5G access in South Korea where the local network supports it. Other providers may also offer 5G but haven't published network details.
Can I use a multi-country eSIM in South Korea?
Yes — 4254 regional or global plans listed here also work in South Korea. They cost a little more per GB but save you from buying a separate eSIM for each country on a multi-stop trip.
Will my phone work with a South Korea eSIM?
You need an unlocked, eSIM-compatible phone — most iPhones from XS onward and most recent Samsung Galaxy and Google Pixel models qualify. Use our free eSIM compatibility checker to confirm your exact model before buying.
Trouble accessing sites abroad?
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