Best eSIM for Thailand in 2026: 6 Providers Compared

Thailand has some of the fastest mobile internet in Southeast Asia, with 5G live across Bangkok, Chiang Mai, Phuket, and Pattaya. An eSIM lets you tap into that network the moment you land — no queue at the airport counter, no fumbling with a tiny SIM tray, and no risk of losing your home SIM card.

An eSIM is a digital SIM built into most phones made after 2018. You buy a data plan online, scan a QR code, and you’re connected. Your home number stays active on your physical SIM, so you can receive calls and texts while using Thai mobile data for maps, Grab, and Google Translate.

Below is a hands-on comparison of seven eSIM providers that work in Thailand, with current pricing, network partners, and honest pros and cons for each.

Quick Comparison: Thailand eSIM Providers

Provider	Best For	Cheapest Plan	Cost/GB	Unlimited?	Network	Rating
Saily	Most travellers	1 GB / 7 days — $2.99	$2.00	Yes	AIS	9/10
Airalo	Flexible plans	1 GB / 7 days — $4.50	$3.67	Yes (DTAC)	AIS or DTAC	8/10
Maya Mobile	Hotspot sharing	3 GB / 10 days — $4.99	$1.67	Daily cap	Varies	7/10
Sim Local	Heavy data	50 GB / 10 days — $13	$0.26	$29/7 days	Varies	7.5/10
Nomad	Budget (cities)	1 GB / 7 days — ~$4	$4.00	No	TRUE	6.5/10
Yesim	Dual network	10 GB / 30 days — $12.95	$1.30	Yes ($21.20/wk)	AIS + TrueMove H	8.5/10

1. Saily — Best Overall

Network: AIS (Thailand’s widest coverage)
Plans: 1 GB to 20 GB, with unlimited options available
Validity: 7 to 30 days
Price range: $2.99 – $17.99

Saily is built by the team behind NordVPN, which means the app is polished and the setup process takes about two minutes. Plans run on the AIS network — the same carrier that covers remote islands like Koh Lipe and Koh Kood where other networks drop out.

Pricing breakdown:

• 1 GB / 7 days — $2.99
• 3 GB / 30 days — $5.99
• 5 GB / 30 days — $6.99
• 10 GB / 30 days — $8.99
• 20 GB / 30 days — $17.99

Why it wins: Saily hits the sweet spot between price and reliability. The 3 GB plan at $5.99 is enough for two weeks of maps, messaging, and occasional browsing. If you burn through data faster (video calls, uploading photos), the 10 GB plan at $8.99 is still cheaper than most competitors. Plans also include a built-in web protection feature and ad blocker.

Drawback: Data-only — no Thai phone number for calls or SMS. If you need to call Thai businesses, use LINE (Thailand’s default messaging app) instead.

2. Airalo — Most Flexible Plans

Network: AIS (local plans) or DTAC (unlimited plans)
Plans: 1 GB to 100 GB, plus unlimited options
Validity: 3 to 365 days
Price range: $4.50 – $185

Airalo is the world’s largest eSIM store with over 200 destinations, and Thailand is one of their most popular markets. They offer 12 different local plans — more variety than any other provider on this list.

Key plans:

• 1 GB / 7 days — $4.50
• 3 GB / 30 days — $11
• 10 GB / 30 days — ~$16
• 50 GB / 30 days — ~$48
• Unlimited / 15 days (DTAC) — $19.95
• Unlimited / 30 days (DTAC) — $34.95

Why choose Airalo: The sheer range of plans means you can match exactly what you need. Staying for a weekend? The 1 GB / 7-day plan at $4.50 covers maps and messaging. Here for a month of remote work? The unlimited 30-day plan at $34.95 on DTAC removes any data anxiety.

Airalo also offers regional Asia plans and global plans — useful if you’re island-hopping to Cambodia, Vietnam, or Malaysia after Thailand.

Drawback: Per-GB pricing is higher than Saily for standard plans. The unlimited plans run on DTAC rather than AIS, which means slightly weaker coverage on remote islands. Also, the “unlimited” plans have a Fair Usage Policy that may throttle speeds after heavy use.

3. Maya Mobile — Best for Hotspot Sharing

Plans: 3 GB to “unlimited” (daily-capped)
Validity: 5 to 30 days
Price range: $4.99 – $59

Maya Mobile stands out because all plans include hotspot/tethering — useful if you’re travelling with a partner or need to connect your laptop. Their 180-day refund guarantee is also the most generous in the industry.

Key plans:

• 3 GB / 5 days — $6
• 5 GB / 10 days — $10
• 10 GB / 15 days — $16
• “Unlimited” / 5 days — $20 (capped at 3–5 GB/day high-speed)
• “Unlimited” / 30 days — $59

Drawback: No 5G support. The “unlimited” throttling isn’t clearly communicated upfront.

4. Sim Local — Best Value for Heavy Users

Plans: 3 GB to unlimited
Validity: 7 to 30 days
Price range: $9.50 – $29

Sim Local’s pricing is hard to beat at the high end. Their 50 GB / 10-day plan at $13 works out to $0.26 per GB — the cheapest per-GB rate on this list.

Key plans:

• 3 GB / 30 days — ~$9.50
• 50 GB / 10 days — $13
• Unlimited / 7 days — $29

Why choose Sim Local: That 50 GB plan is a standout for anyone who needs serious data — think streaming, large file uploads, or tethering your laptop for a full workday. At $13 for 10 days, it undercuts most competitors by 50% or more on a per-GB basis.

Drawback: Fewer plan options than Airalo. No 5G support. Less well-known brand with a smaller user community.

5. Nomad eSIM — Solid Budget Option

Network: TRUE
Plans: 1 GB to 50 GB
Validity: 7 to 30 days
Price range: ~$4 – $50

Nomad runs on the TRUE network, which offers the fastest 5G speeds in Bangkok but has weaker coverage in rural areas and islands compared to AIS. If your trip is mainly Bangkok and Chiang Mai, it’s a reliable budget pick.

Standout plan: 50 GB / 30 days at approximately $9 (via eSIMX pricing) — one of the cheapest high-data options available.

Drawback: TRUE’s network coverage outside major cities is the weakest of the three Thai carriers. Not ideal if your itinerary includes remote islands or mountain treks in northern Thailand.

6. Yesim — Best Dual-Network Coverage

Network: AIS + TrueMove H (dual network)
Plans: 500 MB to unlimited, plus Pay-As-You-Go
Validity: 1 to 30 days
Price range: $0.53 – $49.46

Yesim is a Swiss-based provider that connects to both AIS and TrueMove H in Thailand — the only provider on this list with dual-network coverage. Your phone uses whichever carrier has the stronger signal in your area, which is a genuine advantage when island-hopping or travelling between cities.

Key plans:

• 10 GB / 30 days — $12.95
• 20 GB / 30 days — $20.02
• Unlimited / 7 days — $21.20
• Unlimited / 15 days — $31.80
• Unlimited / 30 days — $44.75

Why choose Yesim: The dual-network advantage is real — AIS for island coverage, TrueMove H for fast 5G in Bangkok. Unlimited plans include 5G at $21.20 for 7 days, which beats most unlimited competitors on value. The Pay-As-You-Go International eSIM option is unique — you only pay for data you actually use with no expiry, ideal for light users or short stopovers.

Drawback: Smaller user community than Airalo or Saily. The app interface is functional but not as polished as Nord Security-backed Saily. Unlimited plans have a Fair Usage Policy that may throttle speeds after heavy use.

Thailand’s Mobile Networks: What You Need to Know

Which eSIM you buy determines which Thai network you’ll connect to. Here’s how the three carriers compare:

Network	Strength	Weakness	Best For
AIS	Widest coverage — works on remote islands (Koh Lipe, Koh Kood, Koh Chang) and northern mountains	5G limited to major cities	Island hopping, rural travel, all-round reliability
DTAC / Real	Strong 4G everywhere, competitive pricing	Slightly weaker on remote islands than AIS	General travel, unlimited plans
TRUE	Fastest 5G in Bangkok	Weakest rural/island coverage of the three	City-based trips (Bangkok, Chiang Mai)

eSIM vs. Physical SIM Card at the Airport

You can still buy a physical SIM card at AIS, DTAC, or TRUE counters in the arrivals hall of Suvarnabhumi, Don Mueang, Phuket, and Chiang Mai airports. Here’s how the two options stack up:

	eSIM (Buy Online)	Physical SIM (Airport Counter)
Price	$2.99 – $35 (varies by provider)	49 – 1,599 THB ($1.50 – $49)
Setup time	2 minutes, done before you fly	10–30 minutes (queue + registration)
Phone number	Usually no (data only)	Yes — Thai number included
Top-up	Buy additional plan via app	Top up at any 7-Eleven
Keep home SIM	Yes — dual SIM, both active	Need to swap SIMs (or use a dual-SIM phone)
Older phones	Won’t work (needs eSIM support)	Works on any unlocked phone

When to choose a physical SIM: If your phone doesn’t support eSIM, if you need a Thai phone number for receiving SMS (some Thai services require it), or if you prefer topping up at 7-Eleven with cash.

When to choose eSIM: If you want data working the moment you land, if you’re keeping your home SIM active for calls, or if you simply don’t want to deal with the airport counter queue after a long flight.

How to Set Up Your Thailand eSIM

The process is the same regardless of which provider you choose:

1. Check your phone supports eSIM. Most phones from 2020 onward do. iPhones from XR/XS and later all support eSIM. Samsung Galaxy S20+ and newer support it (except some US models). Google Pixel 3 and newer. A quick check: dial *#06# — if you see an EID number, your phone supports eSIM.
2. Buy your eSIM plan online — ideally 1–2 days before your flight. You’ll receive a QR code via email or in the provider’s app.
3. Install the eSIM. Go to Settings → Mobile Data → Add eSIM (exact path varies by phone). Scan the QR code. Label it “Thailand” so you can identify it easily.
4. Don’t activate yet. Wait until you land in Thailand, then switch your mobile data to the new eSIM line and enable data roaming if prompted.
5. Keep your home SIM as your default for calls and messages. Your phone handles both SIMs simultaneously — Thai data on the eSIM, calls/texts on your home SIM.

The entire process takes under five minutes. Most providers also have step-by-step video guides in their apps.

How Much Data Do You Actually Need?

This depends on how you’ll use your phone. Here’s a rough guide:

Usage Pattern	Daily Data	14-Day Trip	Recommended Plan
Light (maps, messaging, email)	200–500 MB	3–7 GB	Saily 5 GB — $6.99
Moderate (social media, photos, Grab)	500 MB – 1 GB	7–14 GB	Saily 10 GB — $8.99
Heavy (video calls, streaming, uploads)	1–3 GB	14–40 GB	Sim Local 50 GB — $13
Unlimited (work + stream + tether)	3+ GB	40+ GB	Yesim unlimited 7 days — $21.20

Which eSIM Should You Choose?

• Best for most travellers: Saily — cheapest per-GB pricing, runs on AIS (widest coverage), clean app.
• Best for flexibility: Airalo — 12 plan options from 1 GB to unlimited. Good if you’re not sure how long you’ll stay or how much data you’ll need.
• Best for unlimited data: Yesim — unlimited on dual networks (AIS + TrueMove H) with hotspot sharing from $21.20/week. Great value for content creators and remote workers.
• Best for heavy data on a budget: Sim Local — 50 GB for $13 is unbeatable value if you need serious bandwidth.
• Best for dual-network coverage: Yesim — connects to both AIS and TrueMove H. Dual coverage means fewer dead zones, especially useful on islands.
• Best for Bangkok-only trips: Nomad — TRUE network has the fastest 5G in Bangkok. Not recommended for islands.

Best eSIM for Bangkok

All six providers work well in Bangkok — the city has full 4G/5G coverage across all three networks. For the fastest 5G speeds in Bangkok, choose a TRUE-based eSIM (Nomad). For the best overall value, Saily on AIS remains the top pick — AIS covers Bangkok just as well as TRUE, plus you’ll have coverage if you take a day trip to Ayutthaya, Kanchanaburi, or Pattaya.

Best eSIM for Phuket and Thai Islands

Phuket, Koh Samui, and Koh Phangan have strong coverage on all networks. For remote islands (Koh Lipe, Koh Mak, Koh Kood, Similan Islands), AIS is the only network with reliable signal. Choose Saily or Airalo (local plans) — both use AIS. If you want dual-network backup, Yesim’s AIS + TrueMove H gives you the best of both worlds.

Saily vs. Airalo: Which Should You Pick?

These are the two most popular eSIM providers for Thailand. Here is the quick breakdown:

	Saily	Airalo
Price (3 GB)	$5.99	$11.00
Price (10 GB)	$8.99	~$16.00
Unlimited option	Select countries	$19.95 / 15 days
Network	AIS	AIS or DTAC
Plan variety	5 plans	12 plans
Multi-country	No	Asia + Global plans
App quality	Excellent	Good

Bottom line: Pick Saily if you want the best price on a fixed data plan. Pick Airalo if you want unlimited data, multi-country coverage, or are not sure how much data you will need.

Staying Longer Than 30 Days?

Travel eSIMs get expensive for extended stays. Monthly unlimited eSIM plans can cost $80+, adding up fast on extended stays. For stays beyond 30 days — digital nomad life, a yoga retreat, or slow-travelling through the country — a local Thai SIM card is the smarter move.

Visit any AIS, TrueMove H, or DTAC shop in a mall or city centre (skip the airport — city shops are 40-50% cheaper) and you’ll get:

• Monthly plans from 200-400 THB ($6-12) for 15-30 GB of high-speed data
• A Thai phone number — needed for food delivery apps (Grab, LINE MAN), banking, and some local services
• Easy top-ups at any 7-Eleven, via the carrier’s app, or through TrueMoney Wallet

Registration takes about 10 minutes with your passport. If you’re planning to work remotely, check our digital nomad guide for visa options, co-working spaces, and internet speeds across the country.

Frequently Asked Questions

Can I use an eSIM to make phone calls in Thailand?

Most travel eSIMs are data-only — no Thai phone number included. For calls, use LINE (free, and it’s how Thai businesses communicate), WhatsApp, or your home SIM’s international roaming. If you specifically need a Thai phone number, buy a physical SIM at the airport instead.

Do I need an eSIM to fill out the Thailand Digital Arrival Card (TDAC)?

No. You should complete your Thailand Digital Arrival Card (TDAC) before your flight using your home Wi-Fi. However, having a working eSIM is useful at the airport if you need to pull up your TDAC confirmation or book a Grab ride to your hotel.

What if my phone doesn’t support eSIM?

Buy a physical SIM card at the airport. AIS, DTAC, and TRUE all have counters in the arrivals hall at Suvarnabhumi, Don Mueang, Phuket, and Chiang Mai airports. Prices start at 49 THB (~$1.50) for a basic plan. You can also buy SIM cards at any 7-Eleven, but airport counters handle the registration process for you.

Can I top up my eSIM if I run out of data?

Yes. Saily, Airalo, and most other providers let you buy additional data packs through their apps. The top-up activates within minutes. No need to visit a shop or buy a new eSIM.

Will my eSIM work on all Thai islands?

Major islands (Phuket, Koh Samui, Koh Phangan, Koh Tao, Koh Phi Phi, Koh Lanta) have strong 4G coverage on all three networks. For remote islands like Koh Lipe, Koh Mak, Koh Kood, or the Similan Islands, AIS has the most reliable signal. Choose Saily or Airalo’s local plans (both use AIS) if your itinerary includes these destinations.

Can I share my eSIM data as a hotspot?

It depends on the provider. Yesim and Maya Mobile explicitly include hotspot sharing on all plans. Saily and Airalo support it on most plans but check the specific plan details before purchasing.

How do I check if my phone supports eSIM?

Dial *#06# on your phone. If an EID (Embedded Identity Document) number appears alongside your IMEI, your phone supports eSIM. Alternatively, go to Settings → Mobile Data — if you see an option to “Add eSIM” or “Add Mobile Plan,” you’re good to go.

Before You Fly

An eSIM is just one part of preparing for your trip. Before you board, complete the Thailand Digital Arrival Card (TDAC) at tdac.immigration.go.th — it’s mandatory for all foreign nationals and must be submitted within 72 hours of arrival. You’ll also want to double-check Thailand entry requirements for your nationality (93 countries get 60-day visa-free entry as of 2026). For a full pre-departure checklist, see our Thailand packing list.