Chiang Mai eSIM
Thailand data plans from $2.34. Works at CNX and across the country.
Prefer the app? Voyafi is on the App Store and Google Play.
Chiang Mai International Airport (CNX) is only a few kilometres from the old city, so most visitors are at their hotel within half an hour of landing. A Voyafi Thailand eSIM works at the airport, in the city and across the country; install it before you fly and you are online as soon as you land.
Network in Thailand: TrueMove H, DTAC and AIS. 5G is available where the network and your phone support it.
Validity starts when the eSIM first connects to a network in Thailand.
Good to know when you land in Chiang Mai
Facts from official sources, each with the date we last checked it.
Wi-Fi at Chiang Mai International Airport (CNX)
Chiang Mai International Airport (CNX) offers free Wi-Fi on the “AOT Airport Free Wi-Fi by NT” network: enter an email address, tick the terms box and you can use the internet for 60 minutes. The airport’s notice does not say how many sessions you can start, and only this network name is official.
Source: Chiang Mai International Airport (Airports of Thailand) · checked 18 October 2026 ↗
Thailand Digital Arrival Card (TDAC) before you land
Since 1 May 2025 every non-Thai visitor has to submit the Thailand Digital Arrival Card online before entering the country. The form opens three days before your travel date and is free on the official site, tdac.immigration.go.th; sites that charge a fee are not official. Keep the confirmation on your phone for immigration, and submit it before you fly or as soon as your eSIM connects after landing.
Source: Royal Thai Embassy (Ministry of Foreign Affairs of Thailand) · checked 18 October 2026 ↗
Thailand plans for your trip to Chiang Mai
Every plan on this page works in Chiang Mai. Prices are final, in US dollars.
Only visiting Thailand?
For 10 GB · 30 days, the Thailand plan costs $10.11, the Asia plan $34.62 and the Global plan $73.10.
“Per day” plans have a daily data allowance, and the price shown is for 1 day of use. Some slow down to a lower speed once the day’s data is used.
Buy your Thailand eSIM
Prefer the app? Voyafi is on the App Store and Google Play.