eSIM Thailand 2026: Compare the Best & Cheapest Plans

Prices start at $4.99 for a week with 5 GB. What you pay depends on two things: how many days you need and how much data. Below are the cheapest plans for common trips, each with the typical price next to it. If a plan costs much more than the typical price, you're overpaying.

Plans that never cut you off start at $1.64 for one day and $16.08 for 30 days. On most of them you get a set amount of full-speed data each day. After that the speed drops until the next day, but the data keeps working. Some plans give one full-speed amount for the whole plan instead, so compare that amount before you buy. A plan that gives a fixed amount each day and then cuts you off is not unlimited. It's a daily allowance.

Yes: 23 of 50 providers sell 5G plans here. To find them, look for the 5G badge on a plan or use the "5G" filter. Where there's no 5G, your phone switches to 4G. Coverage is best in Bangkok, Chiang Mai and other big cities. In remote areas the signal can be weak or missing on any phone, whatever eSIM you use.

Buy the eSIM online a few days before your flight:

1. Pick a plan on this page.
2. Buy it on the provider's website or in its app, paying by card.
3. The eSIM arrives by email or in the app within minutes.
4. Install it at home over Wi-Fi.
5. When you land, switch mobile data to the eSIM.

When do the plan's days start? That depends on the provider. Some count from your first connection in Thailand, while others let you choose a start date within a window shown on the plan page.

A travel eSIM connects to a local mobile network in Thailand, just like a local SIM card. The difference is that an eSIM is a plan you download to your phone, so there's no plastic card to insert and your own SIM stays in place. You install it before the trip and switch mobile data to it when you arrive. For setup steps, see how to install an eSIM on iPhone or install an eSIM on Android.

For a tourist, an eSIM is the better choice:

• In most cases it costs less than a tourist SIM card.
• You install it at home and you're online as soon as you land.
• Your home SIM stays in the phone, so calls and bank codes still reach you.

A Thailand SIM card makes sense only if you need a local phone number or you stay for months. Read the full guide: Thailand SIM card for tourists.

Yes, a Thailand eSIM is exactly that. You pay once for prepaid data, with no contract and no monthly bill. Choose the amount and the days up front, and that's the whole cost. Only the form is different: instead of a plastic card, the data SIM lives inside your phone. There's nothing to pick up anywhere.

Choose the days first: set the Validity filter to the length of your trip. Next comes data. Maps, messages and some browsing take well under a gigabyte a day, and how much data Google Maps uses is worth a look if navigation is what you need most. Video and video calls use several times more. The calculator works it out from your own habits. Then sort the plans that are left by price and compare.