Best SIM Cards for Tourists in Thailand (2025)

Why a SIM Card Matters When Traveling in Thailand

Traveling to Thailand without a local SIM card can quickly become inconvenient—and expensive. While international roaming is an option, it often comes with inflated costs and limited data allowances.

Whether you’re visiting for a few days or a few weeks, having a reliable mobile connection is essential for navigating unfamiliar streets, ordering rides, booking accommodation, and staying in touch.

For most travelers, relying on public Wi-Fi is not practical. Although free Wi-Fi is available in some cafes and hotels, the coverage is inconsistent, and connections are often insecure or slow. A local SIM—or an eSIM—is a much better solution for maintaining steady internet access while on the go.

Buying a SIM card upon arrival is easy in Thailand, with major providers offering tourist-friendly packages at airports and convenience stores. Alternatively, eSIM services like Airalo let you get connected before you even land, eliminating the need to search for a mobile kiosk or fumble with physical SIMs after a long flight.

Airalo: The Hassle-Free eSIM Option

Airalo is a convenient eSIM provider that lets you activate mobile data in Thailand before you even arrive. There’s no need to swap SIM cards—just download the app, choose a plan, and install the eSIM directly to your phone.

Plans are affordable, with popular options like 15GB for 15 days. Airalo is data-only (no Thai phone number), so it’s ideal for messaging and internet use via apps like WhatsApp or Line. It works on most newer smartphones that support eSIM.

It’s perfect for travelers who want to skip airport kiosks and get online instantly.

👉 Buy your Airalo eSIM now

DTAC: The Tourist-Friendly SIM at the Airport

DTAC is one of Thailand’s major mobile providers and a favorite among tourists for its easy-to-buy “Happy Tourist SIM”. You’ll find DTAC kiosks at all major airports, making it a hassle-free choice right after landing.

Their standard tourist SIM offers generous data (often 15GB+), free local calls, and even some international credit. Packages are valid from 7 to 15 days and start at very reasonable prices. Setup is quick—just show your passport, and you’re good to go.

Coverage is strong in cities and popular tourist areas, and topping up is easy via app or at 7-Eleven.

👉 Pre-book your DTAC SIM card and skip the wait

AIS: The Premium Network with Broad Coverage

AIS is Thailand’s largest mobile network and known for having the best coverage, especially in rural areas and on islands—perfect for off-the-beaten-path travelers.

Their Traveller SIM plans include generous data, local call minutes, and optional international calling. Prices are slightly higher than DTAC but offer better signal quality in more remote locations. You can buy AIS SIMs at airports, AIS stores, or via online travel platforms.

If staying connected outside major cities is a priority, AIS is a reliable pick.

👉 Check AIS SIM availability and deals via Klook

Comparing the Options: Which One Is Right for You?

Here’s a quick breakdown of how Airalo, DTAC, and AIS stack up for different types of travelers:

Airalo

Type: eSIM
Best For: Digital nomads, tech-savvy travelers
Price Range: Low
Includes Calls: ❌ Data only
Where to Get It: Online via app

DTAC

Type: Physical SIM
Best For: Short-term tourists, convenience
Price Range: Low–Mid
Includes Calls: ✅ Yes
Where to Get It: Airport kiosks or pre-order

AIS

Type: Physical SIM
Best For: Travelers going off-grid
Price Range: Mid
Includes Calls: ✅ Yes
Where to Get It: AIS shops

Which SIM is right for you?

Short trip, want it ready on arrival? Go with DTAC or AIS via Klook
Need data instantly, no SIM swapping? Use Airalo eSIM
Exploring rural areas or islands? Choose AIS for stronger coverage

Each provider has its strengths, so the right one depends on how you travel and what features matter most.

Tips for Buying and Using SIMs in Thailand

Before you choose a SIM card, here are a few important tips to make the process smoother:

✅ Check eSIM compatibility: Not all phones support eSIM. Most recent iPhones and flagship Androids do. Airalo has a compatibility checker on its website.
📸 Have your passport ready: You’ll need it when buying a physical SIM in Thailand due to local regulations.
📶 Test the signal early: After activation, make sure your data and calls are working before you leave the shop or kiosk.
💰 Topping up is easy: You can add credit via provider apps, convenience stores (like 7-Eleven), or kiosks across the country.
🛑 Avoid random street sellers: Stick to official kiosks, convenience stores, or trusted online platforms.

Following these tips will help you avoid common SIM card frustrations and keep you connected wherever your trip takes you.

Final Thoughts: Stay Connected and Travel Smart

Staying connected in Thailand doesn’t have to be complicated—or expensive. Whether you prefer the convenience of an eSIM like Airalo, or the flexibility of a physical SIM from DTAC or AIS, there’s an option to match your travel style and budget.

If you’re landing late, heading straight to your hotel, or just prefer a seamless setup, Airalo is your go-to. For those who like buying on arrival or want local calling options, DTAC and AIS offer reliable, affordable tourist SIMs with solid coverage and easy top-ups.

📲 Get your eSIM instantly via Airalo

🛍️ Prefer a physical SIM ready for pickup? Check deals on Klook

Whichever option you choose, sorting your SIM card in advance means one less thing to worry about—so you can focus on enjoying Thailand from the moment you arrive.