Thai SIM Card for Tourists: Airport, eSIM & Picks (2026)
Compare Thai tourist SIM cards and eSIMs: AIS, True and dtac, airport vs. city prices, passport rules, and which plan fits your Bangkok trip.
On this page
Last updated November 2026: for most short stays, a Thai SIM card means an eSIM installed before landing or a tourist SIM from an official carrier counter. Phone type and trip length decide the pick more than the carrier does. Reported 2026 airport boards list 399 THB for 8 days, so confirm current prices before you pay.
Featured image: Mapleonade, CC BY-SA 4.0, via Wikimedia Commons.
Quick answer: which Thai SIM card should you get?
Pick an eSIM if your phone is unlocked and supports it. Pick an airport tourist SIM if you want a person to register and activate it. Reported airport boards list 8-day, 15-day and 30-day plans at 399 THB, 699 THB and 999 THB. Treat those figures as dated and recheck on arrival. A live connection also matters for rides, so line up data before you open Grab in Thailand.
| Traveler | Best option | Who should skip |
|---|---|---|
| 3-5 day Bangkok layover | eSIM or 8-day airport plan | Anyone happy on hotel Wi-Fi only |
| 1-2 week multi-region trip | 15-day plan or eSIM, with coverage check | Buyers of the cheapest throttled plan |
| Long stay | 30-day plan, then top-up at a carrier store | Short-stay kiosk shoppers |
| Land-border entrant | eSIM installed before the crossing | Anyone planning to queue at a border |
| Dual-SIM or home-eSIM user | Physical SIM if only one eSIM can be active | Phones with two active eSIM slots |
SIM vs. eSIM for Thailand
An eSIM installs from a QR code or link in minutes. You need an unlocked phone that supports eSIM. Some phones allow only one active eSIM. If your home plan already uses it, a physical Thai SIM keeps both numbers alive. Install before landing if you can. Otherwise, airport Wi-Fi at Suvarnabhumi (BKK) is reported free, so you can order one after touchdown. Dtac's own site lists a Happy Tourist eSIM at 299 THB for 8 days with 15 GB at max speed. Its 599 THB version covers 15 days with 30 GB. Verify both live before buying.
Which Thai network is best for tourists?
Thailand's three tourist-facing brands are AIS, True and dtac. True and dtac are reported to operate together as True DTAC after a merger. Inside Bangkok, reports describe little practical difference, with 4G and 5G widespread. AIS is generally described as the widest-coverage and priciest option. One travel blog reported AIS as the only signal at Cheow Lan Lake in Khao Sok. Treat that as one account, not a guarantee. Check each carrier's own coverage map for your route. You can start with AIS's official site.
Thai tourist SIM prices: how to read the plans
Prices below come from reported airport boards and dtac's site in 2026. Check them against a fresh board before paying. Cheaper "unlimited" plans carry speed caps of 1-10 Mbps. FUP means fair-use policy: speeds drop after you pass the high-speed allowance. Capped bundles can show a bigger GB figure but slow to 384 Kbps afterward. For hotspotting or video, compare GB at max speed, not the headline word "unlimited". Many tourist plans are data-only. Dtac's eSIM plans include 15 baht of call credit. Calls and texts matter mainly for ferry or tour pickups, since LINE and WhatsApp handle most local messaging.
Set the 299 THB for 8 days dtac eSIM against the 399 THB AIS airport plan, since the dtac option lists 15 GB at max speed.
| Plan (reported) | Price | Validity | Speed note |
|---|---|---|---|
| AIS tourist | 399 THB | 8 days | Capped unlimited |
| AIS tourist | 699 THB | 15 days | Capped unlimited |
| AIS tourist | 999 THB | 30 days | Capped unlimited |
| True DTAC bundle | 349 THB | 5 days, 15 GB | FUP 1 Mbps |
| True DTAC bundle | 899 THB | 30 days, 50 GB | FUP 384 Kbps |
| DTAC Infinite | 499 THB | 8 days | FUP after high-speed limit |
| DTAC Infinite | 1,599 THB | 60 days | FUP after high-speed limit |
| dtac Happy Tourist eSIM | 299 THB | 8 days, 15 GB | Max speed allowance |
Where to buy: airport, city, online, convenience store
At Suvarnabhumi, reports describe SIM kiosks right after the immigration signs and around the baggage claim hall. Kiosks before customs are reported cash only. ATMs charge about 220 THB per withdrawal, so no baht can cost you. Arrivals-hall stores for AIS and True/DTAC near Exit Gate 6 are reported to take cards. Verify that detail on arrival. Shops are reported open 24 hours. Don Mueang (DMK) is also reported to have AIS and True/DTAC stores. City stores are reported cheaper than airport counters. A True SIM was reported at 7-Eleven for 49 THB, which needs checking. After you connect, the 7 Key BTS Skytrain Stations in Bangkok: Visitor Guide is a natural next step into town.
Pairing a True SIM at 7-Eleven for 49 THB with self-registration means bringing your passport anyway, and that price still needs checking.
| Channel | Price direction | Payment | Passport | Main risk |
|---|---|---|---|---|
| eSIM before the trip | Close to airport prices | Online card | Check provider terms | Incompatible phone |
| Baggage-hall kiosk | Airport pricing | Cash only | Yes | No baht yet |
| Arrivals-hall store | Airport pricing | Cards reported | Yes | Queue after a long flight |
| City mall store | Reported cheaper | Store dependent | Yes | Extra trip |
| 7-Eleven | Low SIM price reported | Cash or app | Self-registration | Less staff help |
Registration: passport and activation
One source says Thai law requires passport registration for SIM cards. Bring your passport for any physical SIM. Airport staff are reported to scan it and activate the SIM within a few minutes. At 7-Eleven you may have to register yourself. Sources disagree on whether an eSIM bought online skips this step. Read the provider's terms before relying on either answer. If activation fails, return to the counter with the passport and the SIM packaging.
Staying connected beyond Bangkok
Download offline maps before you leave coverage. Booking apps matter when you plan Thailand train journeys. Remote lakes and islands can have patchy signal. Offline maps help on a shared songthaew ride. They help just as much on a longtail boat transfer. Top-ups are reported at 7-Eleven counters, outdoor kiosks and carrier apps. Check your carrier's coverage map for the islands on your route.
Mistakes to avoid and who can skip a Thai SIM
Compare at least two counters before buying. Most mistakes come from rushing at the first kiosk after landing.
- Buying the first kiosk plan without comparing boards.
- Ignoring speed caps of 1-10 Mbps on cheap plans.
- Ordering an eSIM for a locked or incompatible phone.
- Reaching a cash-only kiosk with no baht.
- Forgetting your passport for a physical SIM.
- Skipping a SIM entirely only if hotel Wi-Fi and roaming already cover you.
Frequently Asked Questions
Which SIM company is best in Thailand?
For Bangkok, reports describe little difference between AIS and True/DTAC. AIS is generally described as the widest-coverage option, so compare each carrier's coverage map for your route.
What is an eSIM and how does it work?
An eSIM is a digital SIM installed from a QR code or link instead of a plastic card. Your phone must be unlocked and support it. Plans install in minutes, ideally before you land.
How much does a SIM card cost at Thailand airports?
Reported 2026 airport boards list AIS tourist plans at 399 THB for 8 days, 699 THB for 15 days and 999 THB for 30 days. True DTAC bundles start at 349 THB. Recheck the price board on arrival.
Notes for your Thailand trip
Optional updates when we add or change a town or island guide.
You might also like
Continue reading
More guides you'll find useful
