Thailand eSIM providers at a glance

ProviderDataDurationPriceHotspot
Airalo Top pick1 – 20 GB3 – 30 daysfrom $4.50YesDetails →
Yesim Unlimited10 GB – Unl.7 – 30 daysfrom $16.80YesDetails →
Saily1 – 20 GB7 – 30 daysfrom $3.49YesDetails →
DrimsimPay-as-you-goNo expiry~$10.80/GBYesDetails →

Starting prices shown. Plans and pricing change — verify on Airalo, Yesim, Saily, or Drimsim before purchasing.

Detailed provider reviews for Thailand

Airalo

Recommended

Airalo is the go-to for Thailand with plans running on AIS and TrueMove — Thailand's top networks. Excellent 4G coverage in Bangkok, Chiang Mai, Phuket, Koh Samui, and even the smaller islands. Setup takes minutes and their app tracks usage in real time.

1 GB
$4.50 · 7 days
3 GB
$8.00 · 15 days
5 GB
$11.00 · 30 days
10 GB
$16.00 · 30 days
20 GB
$23.00 · 30 days
Pros
  • Runs on AIS + TrueMove for broad coverage
  • Reliable on islands including Koh Phi Phi and Koh Lipe
  • Clean app with data usage tracking
  • Regional Asia plan covers Thailand + neighbors
Cons
  • Not the cheapest per GB
  • 1 GB plan won't last long in Thailand
  • Unlimited plans have 3 GB/day speed cap
  • Customer support can be slow
Visit Airalo →

Yesim

Unlimited + VPN

Yesim's Thailand plans include unlimited daily data from $22.80/7 days and prepaid packages starting at 10 GB/$16.80. Good for digital nomads and heavy users. Budget travelers using mostly Wi-Fi should look at Saily instead.

Unlimited
$22.80 · 7 days
10 GB
$16.80 · 30 days
20 GB
$25.20 · 30 days
30 GB
$33.60 · 30 days
Pros
  • Competitive unlimited plans for Thailand
  • Clean app with usage monitoring
  • Quick activation process
  • Great value for long stays
Cons
  • Less well-known brand
  • Fewer user reviews available
  • May throttle under heavy use
  • Network partner not always disclosed
Visit Yesim →

Saily

Privacy-focused

Saily, by NordVPN, offers competitive Thailand plans with privacy features built in. Good option if you're using public Wi-Fi at cafes and coworking spaces alongside your eSIM data.

1 GB
$3.49 · 7 days
3 GB
$7.99 · 30 days
5 GB
$11.99 · 30 days
20 GB
$21.99 · 30 days
Pros
  • Built by NordVPN — privacy-first approach
  • Ad blocker and web protection included
  • Competitive pricing
  • Clean minimal app
Cons
  • Newer eSIM provider
  • 30-day activation window
  • No unlimited plans
  • Limited rural island coverage
Visit Saily →

Drimsim

Pay-as-you-go

Drimsim charges ~$10.80/GB in Thailand — significantly more expensive than prepaid plans from other providers. Only makes sense as a backup SIM for emergencies or very light usage across multiple countries.

Pay-as-you-go
~$10.80/GB in Thailand
No expiry
Balance never expires
Pros
  • Pay only for what you use
  • Works across 190 countries seamlessly
  • Physical SIM + eSIM available
  • Balance never expires
Cons
  • More expensive than prepaid plans
  • No bulk discounts
  • Less intuitive for beginners
  • Not ideal for heavy data users
Visit Drimsim →

How much data do you need in Thailand?

Thailand has widespread free Wi-Fi in cafes, malls, and hotels — especially in Bangkok and Chiang Mai. But coverage can be spotty on islands and in transit. For a typical 7-day trip: 3–5 GB handles maps, messaging, ride-hailing (Grab), and social media comfortably.

Quick guide: Light user → 1–3 GB/week (Yesim 3 GB $3.50). Moderate → 5–10 GB (Yesim 10 GB $9). Heavy/nomad → Yesim unlimited or Airalo 20 GB.

Network coverage in Thailand

Thailand has three major networks: AIS (largest coverage), TrueMove H, and DTAC. Most eSIM providers connect to AIS or TrueMove. Coverage is excellent in Bangkok, Chiang Mai, Phuket, Koh Samui, and Pattaya. Island coverage varies — popular islands like Koh Phi Phi and Koh Lanta have 4G, but smaller islands may have weaker signal.

5G in Thailand: Available in central Bangkok and Chiang Mai. Most tourist areas run on fast 4G (20–50 Mbps) which is plenty for any travel use.

Tips for using an eSIM in Thailand

Install before you fly. Set up your eSIM at home and activate on landing at Suvarnabhumi or Don Mueang airport. Instant data for booking a Grab ride into the city.

Grab is essential. Thailand's ride-hailing app needs data to function. Having eSIM data from the moment you land means no haggling with airport taxi touts.

Island-hopping note. Coverage can drop on ferry routes between islands. Download offline maps for island destinations before heading to the pier.

Good to know: Thailand's local tourist SIMs from AIS or TrueMove cost 200–400 THB ($6–12) at airports and 7-Elevens. Comparable to eSIM pricing, but eSIMs save you the queue and passport hassle.

Not sure about eSIM? Read our eSIM vs physical SIM comparison to decide which option is better for your trip.

eSIM vs Thai tourist SIM cards

Thailand is one of the most competitive mobile markets in Southeast Asia, and local SIMs are genuinely cheap. Here's an honest comparison:

7-Eleven tourist SIMs from AIS, TrueMove, or DTAC cost 299–599 THB ($8–17) for 15–30 GB over 8–15 days. Available at any 7-Eleven (there's one every 200 meters in Bangkok). The catch: you need your passport, staff may not speak English, and activation can take 10–20 minutes.

Airport SIM counters at Suvarnabhumi and Don Mueang are convenient but charge 2–3x the 7-Eleven price for the same plans. Queues can be long during peak arrival times.

When eSIM wins: if you value having data the moment you land (for Grab from the airport), hate queuing, or are island-hopping and don't want to deal with physical SIM logistics on Koh Samui or Koh Phi Phi. Also better for short stays of 3–5 days where a 15-day local SIM is overkill.

When a local SIM wins: if you're staying 2+ weeks and want maximum data for minimum cost, or if you need a Thai phone number for local services (food delivery, local bookings).

Frequently asked questions

Thailand is unique because local SIMs are incredibly cheap (from 299 THB / $8 for 30 GB at any 7-Eleven), so the eSIM advantage here is convenience, not price. Airalo is the best pick if you want instant data on arrival at Suvarnabhumi — no 7-Eleven detour. For month-long stays in Chiang Mai, Yesim's unlimited plans beat airport tourist SIMs on hassle if not on price.
Yes, on popular islands like Koh Samui, Phuket, Koh Phi Phi, and Koh Lanta. Smaller, more remote islands may have weaker coverage. Download offline maps as a backup.
For maps, Grab, messaging, and social media: 3–5 GB per week. Digital nomads working from Chiang Mai cafes should budget 10+ GB/week or go unlimited.
Roughly similar pricing. Airport SIM vendors charge 200–400 THB ($6–12) with passport registration. eSIMs cost about the same and can be activated before you even board.
Yes. Grab works with data-only eSIMs. Just make sure you registered your Grab account with your home phone number before the trip, so you can receive verification SMS on your physical SIM.
Most connect to AIS (Thailand's largest network) or TrueMove H. Both provide excellent nationwide coverage with 4G speeds of 20–50 Mbps in cities.
Airalo, Yesim, Saily, and Drimsim all allow full hotspot sharing.