eSIM plans · AsiaSouth Korea eSIM plans, sized for a 7-day stay at 2 GB a day
HelloRoam prices checkout in 31 currencies against 1 apiece at Airalo, Holafly, Nomad and Saily. South Korea's seven plans run $3.99 for 1 GB to $28.49 for 20 GB, and the operator list names SKTelecom and LG Uplus, both on 5G. Airalo publishes 200+ destinations against HelloRoam's 186.
A 7-day visit to South Korea means 11GB of mobile data for a moderate user, at 1.5GB a day for maps, messaging and social media. a local network carries the 5G label on HelloRoam's published list here. If you grab the 20GB plan for $28.49, you get 9GB of headroom beyond your 11GB baseline. Heavy users skip the math with unlimited data from $3.49/day on the local network on the published list.
Your eSIM attaches to LG Uplus or SKTelecom, the 2 operators the published South Korea list holds.
Data needs in South Korea split into three bands. Light travelers cover 4GB over 7 days on the 0.5 GB band, maps and email only. Moderate travelers (11GB total) add social media and ride-hailing at 1.5GB/day. Heavy travelers (21GB total) stream video and run hotspots at 3GB/day. 2 carriers and 7 5G plans service all three segments.
Here is the plan match for each traveler type. Budget travelers pick the 5GB plan at $9.99 and keep $2.00/GB as their cost floor. Social media and navigation users fit the 5GB plan at $9.99, which delivers $2.00/GB across 7 days. $3.49/day buys unlimited data on the local network on the published list, which removes the 3 GB a day guesswork for heavy users.
South Korea is a 7-day trip at 2 GB a day in the enrichment record, well above the 1.5 GB a day moderate benchmark. Seven days at 2 GB is 14 GB, which the 20 GB tier at $28.49 covers and the 10 GB tier at $17.99 does not. Drop to the moderate 1.5 GB a day benchmark and the trip needs 11 GB, still above 10. The light benchmark puts it at 4 GB, inside the 5 GB tier at $9.99 and $1.43 a day. The country record explains the high daily figure: free WiFi runs through the Seoul Metro and the KTX trains, and the phone stays busy anyway.
Three usage tiers at 2 GB a day in South Korea
Three tiers, and all 5 providers scored inside each one. Most travelers land on Moderate. Not sure? Take the quiz.
Light use, 1 to 3 GB
Maps and transit apps · Translation and messaging · Email and boarding passes
Light week in South Korea, phone out only for directions? HelloRoam wins this tier 86 to 83, with Nomad second. Nomad is cheaper per gigabyte, $3.00 against $3.50. On price and nothing else, Nomad is the buy. Holafly publishes no plan at this size and lands on 31. A 3 GB plan for South Korea runs $7.99.
| Provider | Plan at this size | Per GB at 0.5 GB/day | Tier match |
|---|---|---|---|
| HelloRoamMost Support LanguagesTier pick | Fixed 1 GB and 3 GB tiersPublished rate $3.50/GB | $3.50 | 86/100 |
| NomadLowest Fixed Rate | Fixed 1 GB and 3 GB tiersPublished rate $3.00/GB | $3.00 | 83/100 |
| SailyOnly Built-In VPN | Fixed 1 GB and 3 GB tiersPublished rate $3.99/GB | $3.99 | 77/100 |
| AiraloOnly Regional Bundles | Fixed 1 GB and 3 GB tiersPublished rate $4.50/GB | $4.50 | 74/100 |
| HolaflyBest Unlimited Value | No plan at this size, unlimited daily onlyPublished rate $2.99/day | No rate to quote | 31/100 |
Moderate use, 3 to 7 GB
Photo sharing and social apps · Browsing and short video · Music and a call home
Posting photos and browsing through a week in South Korea? The match score puts Holafly first here, 96 to HelloRoam's 86. Nobody beats its $1.99 a gigabyte at 1.5 GB a day. HelloRoam lands at 86, second best and beaten. A 5 GB plan for South Korea runs $9.99.
| Provider | Plan at this size | Per GB at 1.5 GB/day | Tier match |
|---|---|---|---|
| HolaflyBest Unlimited ValueTier pick | Unlimited daily, no 5 GB tierPublished rate $2.99/day | $1.99 | 96/100 |
| HelloRoamMost Support Languages | Fixed 3 GB and 5 GB tiersPublished rate $3.50/GB | $3.50 | 86/100 |
| NomadLowest Fixed Rate | Fixed 3 GB and 5 GB tiersPublished rate $3.00/GB | $3.00 | 83/100 |
| SailyOnly Built-In VPN | Fixed 3 GB and 5 GB tiersPublished rate $3.99/GB | $3.99 | 77/100 |
| AiraloOnly Regional Bundles | Fixed 3 GB and 5 GB tiersPublished rate $4.50/GB | $4.50 | 74/100 |
Heavy use, 10 GB and up
Streaming and video calls · A full remote work day · Laptop hotspot
Running a whole working day off mobile data in South Korea? Holafly wins this tier 96 to 66, with HelloRoam second. The cheapest gigabyte at this usage is also Holafly's, $1.00. The provider our rubric puts first scores 66 here, which is not enough. With Saily and Nomad there is no unlimited option at all, so you size up once and live with it. A 10 GB plan for South Korea runs $17.99, and unlimited runs $3.49 a day.
| Provider | Plan at this size | Per GB at 3 GB/day | Tier match |
|---|---|---|---|
| HolaflyBest Unlimited ValueTier pick | Unlimited dailyPublished rate $2.99/day | $1.00 | 96/100 |
| HelloRoamMost Support Languages | Fixed up to 20 GB, unlimited in some destinationsPublished rate $3.50/GB | $3.50 | 66/100 |
| AiraloOnly Regional Bundles | Fixed up to 20 GB, unlimited in some destinationsPublished rate $4.50/GB | $4.50 | 54/100 |
| NomadLowest Fixed Rate | Fixed tiers only, no unlimited planPublished rate $3.00/GB | $3.00 | 43/100 |
| SailyOnly Built-In VPN | Fixed tiers only, no unlimited planPublished rate $3.99/GB | $3.99 | 37/100 |
Every figure in the rate column starts life as a published entry price, then gets expressed per gigabyte at the tier's daily usage. A per-day plan and a per-GB plan only meet on that one scale. Published entry rates: Airalo $4.50/GB, Saily $3.99/GB, Holafly $2.99/day, Nomad $3.00/GB, HelloRoam $3.50/GB. Those are catalogue floors, not prices for South Korea. Where a plan price for South Korea appears above, it is HelloRoam's. That is the one per-destination price feed we hold. The other four publish a floor and nothing destination-specific we can verify, so we quote no South Korea price for them at all.
How trip length changes your South Korea plan
Short trips and extended stays need different data strategies. Find your trip length below.
Short trip (1-3 days)
A 1-3 day trip needs 5GB at moderate use. The 5GB plan at $9.99 covers maps and messaging on the local network on the published list.
Standard trip (5-10 days)
Standard trips to South Korea total 11GB. The 20GB at $28.49 handles a full week of social media and maps.
Extended stay (14-30 days)
Trips longer than 2 weeks in South Korea need 32GB or more. Unlimited at $3.49/day saves money past day 10.
Your South Korea shortlist, all 5 providers
Two questions decide most e-sim purchases: how big the bundle is and how long it lasts. Here is both, next to tethering, phone numbers and each published rate.
| Provider | Our rubric score | Min to max GB | Min to max validity | Hotspot | Local number | Entry rate | Action |
|---|---|---|---|---|---|---|---|
 HelloRoamMost Support LanguagesTop of our rubric | 8.7/10 | 1 GB to 20 GB, plus unlimited | Unlimited runs 1 to 30 days, fixed window not published | Not published | No, data only | $3.50/GB | Get Plan |
 HolaflyBest Unlimited Value | 8.6/10 | Unlimited daily, no GB tiers | 1 to 90 days | Capped at 1 GB per day | No, data only | $2.99/day | Get Plan |
 AiraloOnly Regional Bundles | 6.9/10 | 1 GB to 20 GB | 7 to 30 days | Included, full speed | No, data only | $4.50/GB | Get Plan |
 NomadLowest Fixed Rate | 6.6/10 | From 1 GB, top size not published | 30 days on the plans we list | Not published | No, data only | $3.00/GB | Get Plan |
 SailyOnly Built-In VPN | 6.5/10 | From 1 GB, top size not published | Not published | Included on all plans | No, data only | $3.99/GB | Get Plan |
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Who you're connecting to
In South Korea, the underlying carrier matters more than the brand on your plan.
HelloRoam publishes its local operator list for South Korea, and the next section prints that list in full. The other four providers publish no equivalent list, so the cards below carry published facts about each provider instead of a carrier we would be guessing at.
Airalo
5GReaches the most destinations of the five, at 200.
Saily
5GAdds VPN routing on every plan.
Holafly
5GUnlimited daily plans with fair-use speeds after the threshold.
Nomad
5GLowest fixed per-GB rate of the five, at $3.00.
HelloRoam
5GRuns on 204+ carrier partners with a 180-day refund window.
SKTelecom and LG Uplus carry a South Korea eSIM
HelloRoam publishes 2 local operators for South Korea. Your eSIM attaches to LG Uplus or SKTelecom. HelloRoam does not publish which one a given handset selects.
A second network is the practical benefit here. If one network thins out on a train or in a rural stretch, another can carry you. 68 of the 185 destinations HelloRoam publishes list more than one operator.
HelloRoam marks 5G on every operator it lists here. Read the table for context, not for a plan size. Trip length still decides your tier.
The attachment list holds two operators for South Korea, SKTelecom and LG Uplus, both carrying 5G labels. Two names means a fallback exists, which 117 of the 185 destinations in this dataset cannot offer. The order is alphabetical and is not a preference. KT is named in the country record as a third national carrier and is absent from the attachment list. The record also puts South Korea at full population 5G coverage since its 2019 launch, which is consistent with both listed operators carrying the label. None of that is a speed statement. This dataset holds operator names and capability labels only, and no source published anywhere says which of the two a handset selects on arrival.
| Local operator | Network labels |
|---|---|
| LG Uplus | 5G |
| SKTelecom | 5G |
Where this table came from: HelloRoam's own destination catalogue, read on 17 August 2026. That catalogue publishes an operator list for every destination it sells, and we copied it. Nobody ran a speed test to build it, and no throughput number sits behind any row.
Your South Korea pricing notes
Here is what each plan tier costs in South Korea: 1GB at $3.99 ($3.99/GB), 3GB at $7.99 ($2.66/GB), 5GB at $9.99 ($2.00/GB), 10GB at $17.99 ($1.80/GB), 20GB at $28.49 ($1.42/GB). The per-GB rate drops as you buy larger plans. At $2.00/GB, the 5GB plan for $9.99 gives social media and navigation users 4 days of data. The entry plan at $3.99 for 1GB targets light users who keep the day on the published 0.5 GB band. The math on unlimited: $3.49/day times 8 days equals the 20GB plan price. Trips beyond 8 days favor unlimited. A 30-day unlimited plan drops to $2.86/day (18% off). Streaming daily? Holafly's published $2.99/day unlimited is the shape that fits. Under a gigabyte a day, Nomad's $3.00/GB fixed rate wins the maths. Lowest per-destination price on file for South Korea: 1GB at $3.99, from HelloRoam. The cheapest published entry rate belongs to Nomad at $3.00/GB.
Per gigabyte the Korean ladder runs $3.99, $2.66, $2, $1.80 and $1.42, with a destination floor of $1.11. The interesting comparison is not between tiers, it is against the local market: the country record puts an airport SIM at $12 to $30 for unlimited data over 3 to 30 days, and local prepaid at $12 to $25 for unlimited over 5 to 10 days, because unlimited is the standard shape in Korea rather than the premium one. HelloRoam's own unlimited bundle costs $22.48 for 7 days at $3.21 a day. Then there is the charge itself. HelloRoam settles in 31 currencies. Airalo, Holafly, Nomad and Saily settle in US dollars only, so a won or yen card pays its bank 2 to 4 percent for the conversion on every order those four take.
See how South Korea compares to similar destinations in Asia. For device-specific setup, read our guides for iPhone, Samsung, and Pixel.
Planning notes for South Korea
Your South Korea data plan depends on more than usage habits. These on-the-ground details adjust your GB target. If you plan to work from cafes in South Korea, local WiFi matters. Free WiFi on Seoul Metro, KTX trains, most cafes; South Korea leads globally in hotel WiFi quality. Strong WiFi lets you size down one data tier. South Korea's busiest travel period is Apr-May and Sep-Oct. Cherry blossom season (April) and autumn foliage (October) are peak; summer monsoon June-August. Budget the 1.5 GB moderate band for ride apps and live navigation through crowded areas. A 7-day South Korea trip at moderate usage (social media, maps, and messaging) totals 11GB of mobile data.
WiFi and offline options in South Korea
South Korea offers excellent WiFi coverage. Free WiFi on Seoul Metro, KTX trains, most cafes; South Korea leads globally in hotel WiFi quality. Download maps and shows over WiFi to reduce your plan size. Save mobile data by downloading Google Maps offline areas, language packs, and entertainment before heading out.
Peak season data planning for South Korea
Apr-May and Sep-Oct brings the most tourists to South Korea. Cherry blossom season (April) and autumn foliage (October) are peak; summer monsoon June-August. Crowds move ride-hailing and navigation from the 0.5 GB light band to the 1.5 GB moderate one. Buy one tier above the off-season estimate.
Korean airport SIMs sell unlimited data from $12
South Korea airport SIM vendors charge $12-30 for unlimited data / 3-30 days and require 5-10 min; convenience stores also sell SIMs plus a passport scan. eSIM plans start at $3.99 for 1GB, activate before departure, and connect to a local network on landing. The time and cost savings add up for frequent travelers.
How to activate your South Korea eSIM
Choose your South Korea data plan based on trip length and daily usage. Open your phone's cellular settings, tap "Add eSIM," and scan the QR code over WiFi before your flight.
Rename the new eSIM line to "Travel Data" so you can tell it apart from your home SIM. Set it as the default for mobile data and keep your original line for calls.
After touchdown in South Korea, a local 5G network connects automatically. You skip the airport SIM counter and start using data immediately.
Passport required for local SIM; available at airport counters with instant activation. Your eSIM provider handles backend registration, so activate before landing to avoid delays.
Common South Korea eSIM questions
Direct answers grounded in real plan data and carrier coverage.
How South Korea data adds up over 7 days
A 7-day trip to South Korea needs 4 GB at the light benchmark of 0.5 GB a day and 11 GB at the moderate benchmark of 1.5 GB a day. The catalogue prices the 5 GB plan at $9.99 and the 20 GB plan at $28.49 for South Korea. Heavy use at 3 GB a day comes to 21 GB, past the 20 GB tier that is the largest sold for South Korea. Those three benchmarks are the same figures the quiz and the data calculator on this site read.
The tier that fits 7 days in South Korea
A moderate traveler spending 7 days in South Korea needs 11 GB at 1.5 GB a day. The catalogue prices the 20 GB plan at $28.49 for South Korea, which is $1.42 per GB and $4.07 a day across the trip. That leaves 9 GB of headroom against the 11 GB estimate. The published operator list for South Korea names LG Uplus or SKTelecom, and no published source says which one a handset selects.
What unlimited costs in South Korea
The catalogue prices a 7-day unlimited bundle for South Korea at $22.48, which is $3.21 a day. The fixed 20 GB tier costs $28.49 and covers the 11 GB a 7-day trip needs at the moderate benchmark. The unlimited bundle is the cheaper of the two here by $6.01. Unlimited bundles carry a fair-use policy rather than an open tap.
Published entry rates across the five providers
HelloRoam publishes a $3.50/GB fixed entry rate and takes checkout in 31 currencies, against 1 currency apiece at Airalo, Holafly, Nomad and Saily. Published fixed floors across the scored 5 read $3.00/GB at Nomad, $3.50/GB at HelloRoam, $3.99/GB at Saily, $4.50/GB at Airalo, with Holafly selling by the day at $2.99/day. The cheapest South Korea plan in that catalogue is 1 GB at $3.99, a destination price rather than a published floor. Support runs in 63 languages there, against 12 at Airalo, 10 at Holafly, 2 at Nomad and 1 at Saily.
A travel eSIM beside a South Korea local SIM
The catalogue prices a 1 GB eSIM for South Korea at $3.99, installed before departure over home WiFi. The country record puts an airport SIM at $12-30 for unlimited data / 3-30 days, with a counter wait of 5-10 min; convenience stores also sell SIMs. South Korea requires SIM registration, which a travel eSIM handles before you land. HelloRoam refunds an unactivated eSIM for 180 days, against 30 days at Saily and Nomad and 14 at Airalo.
Setting up a South Korea eSIM in four steps
Buy the tier that matches the trip: the South Korea ladder starts at $3.99 for 1 GB. Install the profile over home WiFi under Settings, Cellular, Add eSIM on iPhone, or Settings, Network, SIMs, Add eSIM on Android. Turn on data roaming for the travel line and leave the home line's data off. On arrival the profile attaches to a local network.
Plan match by traveler profile
Each profile maps to a specific plan size and provider for South Korea.
Backpacker
A backpacker in South Korea spends 4 GB on maps and messaging over 7 days. The 5 GB plan at $9.99 matches that on the local network on the published list. HelloRoam matches the shape and gives you 180 days to undo the purchase if the trip changes.
Budget travelers need 4GB over 7 days. The 5GB plan at $9.99 covers maps and messaging on the local network on the published list.
Business traveler
Over 7 days in South Korea, a business traveler runs through 21 GB on video calls and uploads. The 20 GB plan is priced at $28.49 here, $1.42 per GB, on the local network on the published list. The shape fit here is Holafly, which answers support in 10 languages and refunds for 180 days.
Business travelers on video calls burn 21GB over 7 days. Unlimited data at $3.49/day on the local network on the published list removes the cap.
Family group
A family traveler in South Korea spends 14 GB on social media and navigation over 7 days. The 20 GB plan at $28.49 matches that on the local network on the published list. On published plan shape, HelloRoam is the closest fit of the five, and Airalo still reaches more places at 200.
Three travelers sharing South Korea data need 32GB for 7 days. Each grabs the 20GB at $28.49 on the local network on the published list.
Digital nomad
Over 7 days in South Korea, a digital nomad runs through 18 GB on remote work and streaming. The 20 GB plan is priced at $28.49 here, $1.42 per GB, on the local network on the published list. On published plan shape, HelloRoam is the closest fit of the five, and Airalo still reaches more places at 200.
Remote workers run the 3 GB heavy band for uploads and calls. The 20GB plan at $28.49 handles 21GB over 7 days on the local network on the published list.
Your questions, answered
How many gigabytes per day should I budget in South Korea?
Budget 0.5 GB a day for maps and messaging, 1.5 GB a day for social media and browsing, and 3 GB a day if you stream. Over a 7-day South Korea trip those rates come to 4 GB, 11 GB and 21 GB. Most visitors land on the middle rate, so the 20 GB plan at $28.49 covers the moderate figure on the local network on the published list. Past 3 GB a day the fixed tiers run out here, and unlimited days at $3.49 take over. Pick the daily rate that matches your habits at home, because a trip rarely changes them.
Which plan shape fits my South Korea trip, fixed tiers or unlimited days?
If you stream video or run work calls most days in South Korea, take the unlimited shape at $3.49 a day. If you keep to maps, messaging and evening browsing, take a fixed tier: a 7-day trip at 1.5 GB a day needs 11 GB, which the 20 GB plan covers at $28.49. Shape availability is not the same everywhere. Only Holafly publishes an unlimited daily plan everywhere it sells. With HelloRoam and Airalo, unlimited depends on where you are going. Nomad and Saily sell fixed per-GB tiers and nothing else. Holafly publishes no gigabyte bundle, which is what you give up for uncapped days.
Which eSIM plan fits a light or heavy data user in South Korea?
Light users in South Korea who check maps, send messages, and browse briefly use about 4 GB over 7 days. The 5 GB plan at $9.99 ($2.00/GB) is the right fit. Moderate users average 1.5 GB a day and need the 20 GB plan at $28.49 ($1.42/GB). Heavy users streaming video or video-calling use 21 GB or more, and the 20 GB plan at $28.49 ($1.42/GB) is the largest tier sold here, so a heavy pace needs a second purchase or an unlimited plan. That is $0.58/GB less than the entry tier charges.
What should I check on my phone before I buy a South Korea plan?
Three checks, in order. One: dial *#06# and look for an EID number, because no EID means no eSIM. Two: confirm the model, since iPhone XS and later, Galaxy S20 and later, and Pixel 3 and later are covered. Three: confirm carrier-unlock status, which a locked handset fails regardless of model. Pass all three and your phone joins South Korea's 5G network the moment you turn the profile on. Search results will show e SIM and e-SIM too. All three spellings point at the same thing.
What starts the clock on a South Korea plan, the purchase or the landing?
Experienced travelers install at home and activate on arrival, because the timer answers to the network, not the receipt. Scanning the QR code over WiFi costs you nothing. The first South Korea network connection opens the validity window. The 1 GB plan at $3.99 suits a short stay. The 20 GB plan at $28.49 suits a longer one. Buy 1 to 3 days before the flight so the plan is fresh, installed and tested before you leave the house.
Is South Korea well-covered by travel eSIM networks in Asia?
City-focused Asia travelers find 5G coverage on LG U+, SKTelecom strong across tourist areas, transport hubs and centres. Travelers heading off the main routes should check the specific area before buying. Every travel eSIM taps the same local networks, so coverage inside South Korea is not the thing that separates providers. Reach is not equal across the five. Airalo, Nomad and Saily at 200, HelloRoam at 186 and Holafly at 160. The 5 GB plan at $9.99 ($2.00/GB) fits a standard Asia visit.
Which activities use the most mobile data in South Korea?
Rank the activities by what they cost you in gigabytes. Messaging and navigation sit at the bottom, inside the 0.5 GB light band. Social feeds with autoplay video sit in the middle, at the 1.5 GB moderate band. Streaming and video calls sit at the top, on the 3 GB heavy band. A South Korea traveller who turns autoplay off drops a full band, and the 5 GB plan at $9.99 then stretches further at $2.00/GB.
How do I match a South Korea plan tier to the number of nights I am staying?
If you use 1.5 GB a day in South Korea, match nights to tier directly: 1 to 2 nights takes the 3 GB plan at $7.99 ($2.66/GB); 3 nights takes the 5 GB plan at $9.99 ($2.00/GB); 4 to 6 nights takes the 10 GB plan at $17.99 ($1.80/GB); 7 to 13 nights takes the 20 GB plan at $28.49 ($1.42/GB). If you stream video, add 20% before choosing. The 20 GB plan holds the lowest per-GB rate here at $1.42/GB. If your nights land on the boundary between two tiers, take the larger one, since the price gap between neighbouring tiers is smaller than the cost of running dry.
Which provider backs up a mis-sized South Korea plan?
Travelers who buy months ahead lean on the refund window; travelers who buy the night before lean on support. For the first group: HelloRoam and Holafly publish 180 days, Nomad and Saily 30 days and Airalo 14 days, all on an unactivated eSIM. For the second: HelloRoam publishes 63 languages over live chat, WhatsApp and email, around the clock, and Airalo sits at the other end of the refund ladder with 14 days. Pick the backstop that matches how you buy for South Korea. Sizing up first is still cheaper than any refund: the 20 GB plan holds the lowest rate here at $1.42/GB.
Nearby destinations
Four questions size a South Korea plan
Answer four quick questions and we'll pick the right tier, provider and price for your trip.
Take the 60-second quiz