AT&T roaming in South Korea: what it costs, and when an eSIM is cheaper
Data in South Korea is included with Elite 2.0. Otherwise, it costs $12.00/day (International Day Pass). An eSIM for 7 days and 6 GB costs from $12.99 (GoMoWorld).
The best eSIMs in South Korea for a week
For 7 days and 6 GB
- 1Best unlimited
Ubigi
Unlimited · 7 days
$25.00$3.57 per day- 25 GB at full speed, then reduced speed
- Networks: LG U+ and SK Telecom
- Hotspot allowed
- 2Cheapest
GoMoWorld
9 GB · 30 days
$12.99$1.44 per GB- Lowest total price for 7 days
- Hotspot allowed
- 3Best price per GB
Jetpac
15 GB · 7 days
$17.00$1.13 per GB- Lowest price per GB for this trip
- Networks: SK Telecom and KT
- Hotspot allowed
Three steps, three questions: the best unlimited plan, the cheapest and the best price per GB, from three different providers. How we pick the podium · Affiliate links
AT&T or an eSIM in South Korea: our verdict
Depending on your plan and trip length, at the prices read on October 22, 2026.
If your plan includes South Korea
Keep AT&T
With Elite 2.0, data in South Korea is included at no extra cost, within your allowance abroad.
Otherwise, with AT&T
$12.00/day
International Day Pass. For 7 days and 6 GB, expect $40.00.
With an eSIM, 7 days and 6 GB
$12.99
Today’s lowest price, from GoMoWorld. That’s $27.01 less than AT&T’s rate.
See the planAffiliate links
Data in South Korea with AT&T: our analysis
What AT&T’s rate sheet and eSIM prices show, as checked on October 22, 2026.
The right pass for your trip length
- 3 days3 × International Day Pass$36.00
- 1 weekInternational Travel Add-On$40.00
- 2 weeks2 × International Travel Add-On$80.00
- 1 month5 × International Travel Add-On$200.00
Against the cheapest eSIM
The cheapest eSIM costs less, whatever the length of stay.
- 3 dayseSIM$7.49AT&T$36.00
- 1 weekeSIM$12.99AT&T$40.00
- 2 weekseSIM$22.50AT&T$80.00
- 1 montheSIM$25.00AT&T$200.00
eSIMs in South Korea at a glance
- In South Korea, we compare plans from 7 eSIM providers: GigSky, GoMoWorld, Jetpac, Nomad, Orange Travel, Ubigi, and Yesim.
- The cheapest unlimited plan for a week is from Ubigi: $25.00 (Unlimited · 7 days).
- Locally, the cheapest prepaid SIM card for a week costs ₩31,500 (KT, unlimited data, 7 days); see our SIM card comparison in South Korea.
- A pocket WiFi rents from ₩19,100 a week (WiFi Dosirak); see pocket WiFi rental in South Korea.
AT&T applies the same rate in 21 other destinations we track, including Australia, China, Egypt, France, and Greece.
Plan by plan
What applies in South Korea depending on your AT&T plan.
What AT&T’s official rate sheet sets out in South Korea, offer by offer. “Included” means at no extra cost, within your allowance abroad: your AT&T account shows the one on your line.
| Plan or offer | Data in South Korea | Good to know |
|---|---|---|
| International Day Pass | $12.00/day | Maximum 10 daily fees per line per bill cycle (land). USD 6 per additional line used the same calendar day. Destination is on the Day Pass list, the Elite 2.0 list and the prepaid Travel Add-On list. |
| Elite 2.0 | Included | Included (20GB per month then up to 512 Kbps) |
| Value 2.0 / Extra 2.0 / Premium 2.0 | $12.00/day | International Day Pass |
| Prepaid | $40.00 for 7 days | International Travel Add-On: USD 40 for 7 days (5GB, unlimited talk and text) |
What your trip costs
With the AT&T roaming rate, against today’s cheapest eSIM, for everyday use.
| Trip | With AT&T | Cheapest eSIM | The offer |
|---|---|---|---|
| 3 days · 3 GB | $36.00 3 × International Day Pass | $7.49 GigSky | See the plan |
| 7 days · 6 GB | $40.00 International Travel Add-On | $12.99 GoMoWorld | See the plan |
| 14 days · 12 GB | $80.00 2 × International Travel Add-On | $22.50 Jetpac | See the plan |
| 30 days · 24 GB | $200.00 5 × International Travel Add-On | $25.00 Ubigi | See the plan |
Affiliate links
South Korea with other US carriers
The same trip with the other US carriers we track, from their official rate sheets.
All 4 US carriers we track include South Korea in at least one plan: AT&T, Google Fi, T-Mobile, and Verizon.
T-Mobile
Google Fi
VerizonTurn off AT&T roaming and use an eSIM
Four settings, before you leave or on the plane.
- 1
Install the eSIM at home
Buy it and scan its QR code before you leave: with most providers, the plan only starts when you first connect at your destination.
- 2
Keep AT&T for calls
In your settings, keep your AT&T line for calls and texts, and pick the eSIM for mobile data.
- 3
Turn off AT&T roaming
On iPhone: Settings › Cellular › your AT&T line › Data Roaming. On Android: Settings › Mobile networks › Roaming.
- 4
Keep eSIM roaming on
A travel eSIM uses the local networks: its data roaming must stay on.
AT&T roaming in South Korea: your questions
Answered from the AT&T price guide and today’s prices.
Is data in South Korea included in my AT&T plan?
Yes, with Elite 2.0. Otherwise, it costs $12.00/day (International Day Pass).
How much does data cost in South Korea with AT&T?
$12.00/day (International Day Pass), so $84.00 for 7 days and 6 GB. An eSIM covering the same week costs from $12.99 (GoMoWorld), checked on October 22, 2026.
Which AT&T pass should I get for South Korea?
The best AT&T option depends on how long you stay: for 3 days, 3 × International Day Pass ($36.00); for a week, International Travel Add-On ($40.00); for two weeks, 2 × International Travel Add-On ($80.00); for a month, 5 × International Travel Add-On ($200.00).
AT&T or an eSIM in South Korea: which is cheaper?
Against today’s cheapest eSIM, AT&T costs more whatever the length of stay: for a week, $12.99 for the eSIM against $40.00 with AT&T; for a month, $25.00 for the eSIM against $200.00 with AT&T.
Which US carriers include South Korea?
All 4 US carriers we track include South Korea in at least one plan: AT&T, Google Fi, T-Mobile, and Verizon.
Which network does an eSIM use in South Korea?
Depending on the plan, the 7 providers we compare in South Korea list KT, SK Telecom, and LG U+.
How do I avoid roaming charges in South Korea?
Use a travel eSIM for data and turn off data roaming on your AT&T line. You keep your number for calls and texts.
Can I keep my AT&T number with an eSIM?
Yes, on an eSIM-compatible phone: your AT&T line stays on for calls and texts while the eSIM carries the data.
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