Our recommended eSIMs for Thailand
The old routine of queuing for a local SIM at the airport is exactly what an eSIM removes. You buy online, install in minutes, and keep your home number active — handy for the banking and two-factor codes you do not want to lose access to while travelling.
Airalo
Best valueThe broadest coverage — 200+ countries — and strong value. Buy exactly the data you need.
Check Airalo plans →Yesim
Most flexiblePer-country, regional, pay-as-you-go and a global plan across 150+ destinations.
Check Yesim plans →Saily
NordVPN teamA reliable, security-minded eSIM from the team behind NordVPN, with a clean app.
Check Saily plans →Holiday.com
ExpressVPN teamA global travel eSIM for 150+ destinations from the team behind ExpressVPN — one eSIM you top up as you go, with a privacy focus.
Check Holiday.com plans →GigSky
Cruise & inflightTravel eSIM covering 190+ countries, plus cruise-ship and inflight data plans that most eSIM providers do not offer.
Check GigSky plans →Plans, prices and coverage change often — confirm the current plan on each provider's own page before buying. Links are affiliate links; see our disclosure.
Coverage in Thailand
Coverage is strong across Bangkok, Chiang Mai and the main islands such as Phuket and Koh Samui, as travel eSIMs use Thailand's major networks. Smaller or more remote islands can be patchier, as they are for local SIMs too.
How much data do you need?
- ◆Light use (maps, messaging, ride apps): 1–3GB per week is plenty.
- ◆Normal use (social, photos, some video): a 5GB+ plan with top-up option.
- ◆Heavy use or a longer stay: a larger data allowance is simplest.
Getting connected on arrival
- 1Buy your plan before you fly, while you still have your home connection.
- 2Install the eSIM when prompted (scan the QR code or tap install in the provider's app), and label the line so it is easy to find.
- 3On arrival, turn the travel eSIM's data on and enable data roaming for that line.
- 4Set your home line to 'data off' so you are never billed for roaming, and keep it active for calls, texts and two-factor codes.
Plan the rest of your Thailand trip
Flights, a hire car and somewhere to stay — the essentials, in one place, from services we rate.
Compare flights to Thailand across hundreds of airlines and travel agencies in one search — set a price alert and book when the fare is right.
Find flights to Thailand →Compare car-hire deals across Thailand from all the major rental companies in one search — most bookings come with free cancellation, and prices are usually lowest when you book ahead.
Compare car hire in Thailand →Find somewhere to stay in Thailand — from city hotels to coastal boltholes — with free cancellation on most rooms. Filter by area and read verified guest reviews before you book.
Where to stay in Thailand →Ferries, island day-trips, Grand Palace and temple tickets.
Book island transfers, tours & tickets →Compensation for delays or cancellations on the way in.
Claim for a delayed flight →Frequently asked questions
Is an eSIM good for Thailand?
Yes — Thailand has cheap data and strong coverage in tourist areas, and an eSIM lets you skip the airport SIM queue and land connected. Airalo tends to be the cheapest; Yesim adds flexible formats.
Does it work on the islands?
Coverage is good on the main islands like Phuket and Koh Samui. Smaller, remote islands can be patchier for any network.
Do I need to register my phone?
No. A travel eSIM roaming on Thai networks does not require the local registration a bought SIM sometimes does; just make sure your phone supports eSIM and is unlocked.
