Can I use data on both the French and Dutch sides of Saint Martin?

Yes, the Yeohaengyusim eSIM uses the Orange and Digicel networks, so it works on both French Saint-Martin and Dutch Sint Maarten. Even when you cross the border, it connects automatically with no extra settings.

Will it connect right away when I arrive at Juliana Airport (Sint Maarten)?

If you install the eSIM on your phone before departure, it connects to the network automatically the moment you arrive at Juliana International Airport. Data comes on right after immigration, so you can check transport and accommodation details right there at the airport.

How long does it take to get to Saint Martin from Korea?

No direct flights run from Incheon to Saint Martin, so you'll need to connect via the United States (New York, Miami, etc.), Paris or San Juan. Expect a total travel time of about 20–30 hours depending on the stopover. For such a long journey, an eSIM that connects to data the moment you arrive is far more convenient.

Do I need to bring a separate plug adapter for my Korean devices?

Saint Martin (French side) uses European Type C/E sockets. Korean plugs (Type C compatible) can mostly be plugged in as they are, but to be safe we recommend bringing one universal adapter. Dutch Sint Maarten uses American Type A, so if you plan to go back and forth between both sides, a universal adapter is a must.

When is the best season to visit Saint Martin?

December to April is the dry season, with clear, pleasant weather, making it the ideal season for a trip to. January–March in particular, with temperatures around 25–28°C, is perfect for enjoying the beaches and water sports. June–November is hurricane season with highly changeable weather, so be sure to check the weather conditions before you travel.

Does eSIM work in Saint Martin?

Saint Martin supports eSIM, and plans start from ₩5,894. Install it with the QR code you receive after buying, then just turn on data roaming after you arrive and you are connected straight away. There is no need to swap your SIM.

Travel eSIM or carrier roaming: which is cheaper for a trip to Saint Martin?

For a short trip or light data use, a travel eSIM is usually cheaper. Unlimited roaming from Korean carriers costs about ₩11,000–₩15,000 a day, but with an eSIM you can buy just the days of data you need in advance. For a short trip for one or two people, an eSIM has a big advantage; for a family or very heavy data use, compare carrier unlimited roaming too.

Which carrier network does a Saint Martin eSIM use?

In Saint Martin it connects automatically to local carrier networks such as Orange · Digicel · Dauphin Telecom (4G/LTE, 5G where supported). Population coverage is about 90%. It picks the network with the strongest signal automatically, so there is nothing to set up.

Can I keep using my Korean number while travelling in Saint Martin?

Yes. The eSIM works as a data-only second line, so your Korean SIM and number stay as they are. Use the Yeohaengyusim eSIM for data only, and keep receiving calls, texts and KakaoTalk on your Korean number.

Can I add to or extend my Saint Martin eSIM plan?

Yes. When you use up your data or the plan period ends, you can buy a new plan at any time. Keep using the eSIM profile you already installed; there is no need to install it again, so you carry on without interruption.

Can I use tethering (hotspot) in Saint Martin?

Yes. In Saint Martin you can share your eSIM data with other devices such as a laptop or tablet by tethering (hotspot). Shared data also comes out of your plan allowance, so if you tether a lot we recommend choosing a little more data.

How many GB of data do I need for a trip to Saint Martin?

For mostly maps and messaging, we recommend about 1 GB a day; to use plenty of social media and photo uploads, about 2 GB a day. If you stream a lot of video or tether a lot, an unlimited plan is better. You can always buy more if you run short, so it is fine to choose a little extra at first.

Saint Martin eSIM plans

Instant delivery

A travel eSIM for Saint Martin starts from ₩5,894 and works as soon as you buy it. In Saint Martin it connects automatically to local networks such as Orange · Digicel · Dauphin Telecom (4G/LTE, 5G where supported), with population coverage of about 90%. Install it with the QR code before you leave and you can use the internet as soon as you land, with no roaming setup.

Sent instantly by email
30-day refund
Customer support in Korean
Credit card · Apple Pay

Saint Martin eSIM at a glance

Price: From ₩5,894
Local networks: Orange · Digicel · Dauphin Telecom
Network: 4G/LTE
Activation: QR code — install before you leave
Recommended data: Maps and messaging 1 GB a day · more room 2 GB a day · video: unlimited

eSIM plans you can use in Saint Martin

Data	Validity	Price
Unlimited	1 day	₩8,016
Unlimited	3 days	₩22,289
Unlimited	5 days	₩36,535
Unlimited	7 days	₩50,781
Unlimited	10 days	₩72,143
Unlimited	15 days	₩107,765
Unlimited	30 days	₩214,644
1 GB	7 days	₩5,894
2 GB	15 days	₩10,876
3 GB	30 days	₩15,025
5 GB	30 days	₩24,410
10 GB	30 days	₩44,363
20 GB	30 days	₩79,273
50 GB	30 days	₩179,009

Saint Martin, the jewel of the Caribbean, is a unique destination where a French side and a Dutch side share one island. From Orient Beach with its emerald sea and pure white sand, to restaurant streets blending cuisines from around the world, to the most thrilling plane landings in the world at Maho Beach, Saint Martin has a charm that keeps you coming back. Since it's a long journey of at least 20 hours from Incheon, Google Maps, restaurant searches and staying in touch with family are essentials once you're there. Don't waste time swapping SIMs in an unfamiliar island nation: install a Yeohaengyusim eSIM in advance and connect the moment you arrive. Enjoy a smarter trip to Saint Martin as you cross the two borders freely.

Flight time from Korea

About 20–30 hours (including stopovers)

Time difference

13 hours behind Korea (UTC-4, relative to KST)

Best season to go

December–April (dry season, outside hurricane season)

Plug type

Type C/E (French side)

Why you really need an eSIM for travelling in Saint Martin

Saint Martin is divided into a French side (Saint-Martin) and a Dutch side (Sint Maarten), but you can move between them freely with no border checks. That makes it common to travel back and forth between both sides of the island even in a single day, and a stable data connection really matters then. Without Google Maps it's easy to get lost between the narrow lanes and the beaches, and most water sports and tour bookings are made online. The flight from Korea to the Caribbean is long, with many stopovers, so being able to check information quickly during the trip is essential. Local SIMs can be complicated by the French-side and Dutch-side distinction, whereas the Yeohaengyusim eSIM provides about 90% coverage across the whole island through the Orange and Digicel networks. Just install it with a single QR code before departure and you can use 4G data the moment you arrive at Juliana Airport. Share photos of the planes landing at Maho Beach in real time, and post that gorgeous Orient Beach sunset straight to Instagram.

Network coverage in Saint Martin

Carrier

Orange

+ Digicel

Network

4G/LTE

Coverage

90%

How do I install a Saint Martin eSIM?

1
Buy a plan
Choose a data plan for Saint Martin and complete payment.
2
Scan the QR code
Open the email we sent and point your phone camera at its QR code.
3
Install the eSIM
Complete the eSIM installation as prompted. Doing it before you leave is simplest.
4
Connect on arrival
Once you land in Saint Martin, switch data roaming on and you're online.

1
Buy a plan
Choose a data plan for Saint Martin and complete payment.
2
Scan the QR code
Open the email we sent and point your phone camera at its QR code.
3
Install the eSIM
Complete the eSIM installation as prompted. Doing it before you leave is simplest.
4
Connect on arrival
Once you land in Saint Martin, switch data roaming on and you're online.

Which plan is right for me?

Short trip

For a short 3–7 day trip, an unlimited data plan is ideal.

Business trip

We recommend a high-data plan with plenty for video calls and email.

Long stay

Staying a month or more? A large-data plan gives the best value.

Family trip

Families sharing a connection across multiple devices should pick a tethering-enabled plan with a generous data allowance.

eSIM, local SIM or pocket Wi-Fi: what suits a trip to Saint Martin best?

	eSIM	Local SIM	Pocket Wi-Fi
Activation	Instant (QR code)	Buy locally	Pick up / delivery
Setup	2 minutes	SIM swap needed	Separate device
Price	From ₩5,894	₩10,000~50,000	₩5,000~15,000/day
Network	Local 4G/LTE	Local 4G/LTE	Local 4G/LTE
Devices	1 smartphone	1 smartphone	Up to 5
Flexibility	Top up any time	Fixed data	Daily rental
Best for	Ideal for travellers	Long stays	Families / groups

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