Seoul eSIM
93 South Korea plans · from $5.05
Seoul has some of the fastest mobile internet in the world and a city layout that assumes you have it — Naver Map and Kakao are how everyone navigates, and neither is much use offline. A travel eSIM has you online at Incheon before you reach the AREX platform.
Landing at Incheon & Gimpo (ICN / GMP)
Korean SIM purchases at Incheon require ID verification and, for some plans, a local address. An eSIM skips both — install before departure and it activates on arrival.
eSIM plans that cover Seoul
Seoul is covered by every South Korea plan below — there is no separate city-only eSIM to buy.
Choose a data plan
1 GB
Asia only7 days· 0.2 GB per $1
$5.05
5% back in credits
$5.78
5% back in credits
$6.84
5% back in credits
2 GB
Asia only15 days· 0.2 GB per $1
$8.85
5% back in credits
3 GB
Asia only30 days· 0.3 GB per $1
$11.98
5% back in credits
$13.29
5% back in credits
$14.74
5% back in credits
$17.59
5% back in credits
5 GB
30 days· 0.3 GB per $1
$18.09
5% back in credits
$23.69
5% back in credits
10 GB
30 days· 0.4 GB per $1
$28.16
5% back in credits
$28.35
5% back in credits
$32.65
5% back in credits
$34.78
5% back in credits
$39.09
5% back in credits
20 GB
30 days· 0.4 GB per $1
$46.08
5% back in credits
$46.08
5% back in credits
$55.22
5% back in credits
$56.28
5% back in credits
20 GB
Global - Light only60 days· 0.3 GB per $1
$60.50
5% back in credits
$68.47
5% back in credits
$77.78
5% back in credits
$82.08
5% back in credits
50 GB
30 days· 0.5 GB per $1
$102.07
5% back in credits
$110.01
5% back in credits
$135.65
5% back in credits
50 GB
Global - Light only90 days· 0.4 GB per $1
$142.03
5% back in credits
$162.71
5% back in credits
$163.77
5% back in credits
100 GB
30 days· 0.6 GB per $1
$180.45
5% back in credits
100 GB
Global - Light only90 days· 0.4 GB per $1
$248.28
5% back in credits
100 GB
Asia only180 days· 0.3 GB per $1
$297.70
5% back in credits
$325.00
5% back in credits
How “Unlimited” works: Never cut off — each plan gives a set amount of full-speed data, then a slower speed. The exact allowance and speed are shown on every plan.Read more
Unlimited plans never run out and your eSIM is never disconnected, but every one has a fair-use limit: a set amount of full-speed data, after which the speed is reduced. The amounts differ between plans — most give a daily full-speed allowance that refills every 24 hours from when you first activate the eSIM, while Premium plans give a larger allowance for the whole plan instead. Each plan states its own allowance and the speed after it before you buy. At the reduced speed, messaging, maps, email and light browsing still work; video streaming and video calls may not. If you want every gigabyte at full speed, choose a fixed-GB plan.
Which networks you'll be on in Seoul
Siima eSIMs for South Korea ride SK Telecom and KT. SKT has the broadest 5G footprint; KT is comparable across Seoul and slightly stronger in some of the northern districts.
Coverage around Seoul
Seoul Metro
Full 5G in tunnels across all lines — Korea fitted its subway for mobile coverage long before most of the world. You can stream underground on Line 2 without a stutter.
Myeongdong, Gangnam and Hongdae
Exceptional speeds throughout. Evening crowds in Hongdae and Myeongdong barely dent throughput.
Palaces and Bukchon
Gyeongbokgung, Changdeokgung and the Bukchon hanok village are all well covered, including the hillside lanes.
Bukhansan and the DMZ
Bukhansan National Park holds signal on the main trails. DMZ tours run close to the border where coverage is deliberately limited in places — follow your guide's instructions on phone use.
How much data you need
Seoul encourages heavy data use — 5–7 GB for a week is realistic once you factor in Naver Map, translation and video. Unlimited plans are worth it if you are working remotely.
Work it out with our data usage calculator →