What is the most cost-effective SIM card plan in Thailand for a tourist for 30 days?

The most cost-effective plan for 30 days for a tourist who wants a lot of internet is the Dtac 7-Eleven sim (ex. HAPPY Combo SIM) for 199 baht (about 496 rubles). It provides 30 GB of high-speed internet (up to 15 Mbps), and after exhaustion — unlimited at a reduced speed of 384 Kbps, as well as 15 minutes of calls to all networks. This is an excellent offer for a month-long trip.

If calls are more important to you, and 2 GB of internet is enough, you can consider the AIS ZEED 5G SIM for 50 baht. It is valid for 30 days, provides 2 GB at 5G speed and 15 baht in the account for calls at the rate of 1 baht per minute. However, after using 2 GB of traffic, payment will be 2 baht per 1 MB, which can be expensive if you actively use the network.

Comparison of cost-effective plans for 30 days in Thailand (2026)

Plan name and operator	Cost (baht/rub.)	Internet	Calls
Dtac 7-Eleven sim 199	199 / ~496 rub.	30 GB at 15 Mbps, then unlimited 384 Kbps	15 minutes to all networks
True 30/199	199 / ~496 rub.	30 GB at 15 Mbps, then unlimited 384 Kbps	Not included
AIS ZEED 5G SIM	50 / ~125 rub.	2 GB at 5G speed, then 2 baht/1 MB	15 baht in the account (1 baht/min)

To manage the plan and balance, download the official operator app (MyAIS, Dtac, or TrueID). There you can also change the plan or purchase additional internet packages if the main volume is not enough.

You can learn more and compare all options in our reliable and honest guide in the article Purchase and setup of a local Prepaid SIM card in Thailand.

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