290 verified plans from 18 providers, compared side by side.
See all 290 plansSouth Korea has three nationwide mobile network operators: SK Telecom, KT and LG U+. Mobile speeds and 5G coverage in Seoul, Busan, Jeju and along high-speed KTX rail corridors are consistently ranked among the fastest worldwide.
Travel eSIMs offer an immediate data connection on arrival at Incheon or Gimpo airport without waiting at airport rental booths.
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Lowest price · Cheapest unlimited
$0.77
$0.77/day
WiiLineUnlimited for 1 day
Visit WiiLine(opens in a new tab)See in the listLowest per day · Cheapest for a month or more
$1.63
$0.05/day
WiiLine1 GB for 30 days
Visit WiiLine(opens in a new tab)See in the listCheapest for a week or more
$1.23
$0.18/day
WiiLine1 GB for 7 days
Visit WiiLine(opens in a new tab)See in the list290 of 290 plans for South Korea
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
SimOptionsPrices checked Source: simoptions.com (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
WiiLinePrices checked Source: wiiline.me (opens in a new tab)
Showing the first 15, in the order chosen above.
The cheapest plan from each provider that lasts at least this long. Data allowance in brackets.
| Provider | 3+ days | 7+ days | 15+ days | 30+ days |
|---|---|---|---|---|
| Airalo | $12.003 days (unlimited) | $29.007 days (unlimited) | $49.0015 days (unlimited) | $69.0030 days (unlimited) |
| Holafly | $12.503 days (unlimited) | $27.507 days (unlimited) | $50.5015 days (unlimited) | $73.9030 days (unlimited) |
| aloSIM | $12.503 days (unlimited) | $4.507 days (1 GB) | $7.0015 days (2 GB) | $9.0030 days (3 GB) |
| Ubigi | $2.507 days (1 GB) | $2.507 days (1 GB) | $18.0015 days (3 GB) | $8.0030 days (1 GB) |
| Saily | $18.995 days (unlimited) | $3.997 days (1 GB) | $48.9915 days (unlimited) | $8.9930 days (3 GB) |
| eSIMX | $3.803 days (unlimited) | $3.207 days (3 GB) | $12.8015 days (unlimited) | $3.8030 days (3 GB) |
| eTravelSim | $29.007 days (unlimited) | $29.007 days (unlimited) | $45.0015 days (unlimited) | $4.5030 days (1 GB) |
| SimOptions | $1.503 days (1 GB) | $4.907 days (5 GB) | $18.5015 days (20 GB) | $46.5030 days (50 GB) |
| GoMoWorld | $4.997 days (2 GB) | $4.997 days (2 GB) | $12.9930 days (9 GB) | $12.9930 days (9 GB) |
| Jetpac | $12.993 days (unlimited) | $9.007 days (3 GB) | $41.9915 days (unlimited) | $11.0030 days (5 GB) |
| eSIMGlobe | $2.207 days (1 GB) | $2.207 days (1 GB) | $3.5015 days (3 GB) | $3.6030 days (3 GB) |
| Voye | $9.007 days (6 GB) | $9.007 days (6 GB) | $15.0015 days (8 GB) | $17.0030 days (15 GB) |
| eSIM2Fly | $2.507 days (1 GB) | $2.507 days (1 GB) | $4.3015 days (3 GB) | $4.6030 days (3 GB) |
| eSIMo | $3.907 days (1 GB) | $3.907 days (1 GB) | $9.9030 days (3 GB) | $9.9030 days (3 GB) |
| Virgin Connect Roam | $4.507 days (1 GB) | $4.507 days (1 GB) | $7.5015 days (2 GB) | $10.0030 days (3 GB) |
| Airhub | $13.005 days (12 GB) | $15.508 days (24 GB) | $7.5030 days (4 GB) | $7.5030 days (4 GB) |
| Roamix | $4.657 days (1 GB) | $4.657 days (1 GB) | $6.2015 days (3 GB) | $6.3530 days (3 GB) |
| WiiLine | $0.963 days (1 GB) | $1.237 days (1 GB) | $1.4915 days (1 GB) | $1.6330 days (1 GB) |
Identity verification on local SIMs
Korean telecom regulations require passport verification for tourist SIM cards, but temporary visitor plans cannot pass local online identity verification (Bonin-injeung) used by Korean food delivery and taxi apps. International travel eSIMs provide data roaming without alien registration requirements.
Source: VisitKorea (KTO) — SIM card and mobile connectivity guide
Subway and underground coverage
South Korea's subway networks in Seoul and Busan feature dedicated cellular repeater installations across all major carriers, ensuring high-speed data and VoLTE access while riding deep underground trains and inside transit stations.
Source: VisitKorea (KTO) — SIM card and mobile connectivity guide
| Provider | Networks it lists |
|---|---|
| Airalo | Not named |
| Holafly | Not named |
| aloSIM | SK Telecom |
| Ubigi | LG U+, SK Telecom |
| Saily | Not named |
| eSIMX | Not named |
| eTravelSim | SK Telecom |
| SimOptions | KT |
| GoMoWorld | Not named |
| Jetpac | Not named |
| eSIMGlobe | LG U+, SKTelecom |
| Voye | KT |
| eSIM2Fly | LG U+, SKTelecom |
| eSIMo | Not named |
| Virgin Connect Roam | SK Telecom Co., Ltd. |
| Airhub | SK Telecom |
| Roamix | SKTelecom, LG Uplus |
| WiiLine | KT South Korea, SK Telecom South Korea |
In our check on 25 Oct 2026, the cheapest verified plan for South Korea was WiiLine's south korea unlimited (500 mb/day), 1 day at $0.77. For a week or more, the cheapest was WiiLine at $1.23 for 7 days. A 30-day plan started at $1.63 (WiiLine). Prices change, so confirm on the provider's site.
Travel eSIMs connect to South Korea's primary operators: SK Telecom, KT, or LG U+ depending on the provider roaming agreement.
Apps that require domestic Korean phone number identity verification (Bonin-injeung) generally do not work with data-only travel eSIMs. Kakao T allows international credit card payment for taxis without a local number.
Single-country plans stop at the border. Compare nearby destinations, or see Asia prices side by side.
Official = regulator or manufacturer. Provider = the seller's own page. Secondary = press or independent guides, used only where no official source was available.
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