There’s a lot to do and explore in Thailand, but roaming fees and connection issues rapidly spoil the fun. Well, not with the best eSIM for Thailand. Once activated, it enables an instant internet connection and lets you avoid sky-high roaming charges. Best of all, you don’t even need to swap out your old SIM card.
A trusted eSIM for Thailand activates in a minute, letting you enjoy unlimited data as you explore sprawling Thai cities and soak in splendid views. To make your life a tad easier, our team tested over 20 eSIMs in Thailand and narrowed them to five. These are the best and most reliable eSIMs you can use in 2026.
Best eSIM for Thailand: A Quick Round-up
Best eSIM for Thailand: Plans and Prices Compared
Here’s how the five best eSIMs for Thailand stack up before we get into the detail:
| eSIM | Best for | Starting price | Unlimited data | Network | Promo code |
|---|---|---|---|---|---|
| Ubigi | Best overall | $3.90 / 1 GB / 7 days | From $22.90 / 7 days | AIS + True | GIZMODO (-10% first order) |
| Saily | Security and travel perks | $2.99 / 1 GB / 7 days | From $18.99 / 5 days | Local partner networks | GIZMODO (-15% all plans) |
| Holafly | Unlimited data only | $3.90 / day | Every plan (from $3.90) | 4G/5G | N/A |
| Airalo | 5G coverage | $4 / 1 GB / 3 days | From $10.50 / 3 days | AIS (5G) | N/A |
| Jetpac | Free data for essential apps | $4 / 1 GB / 4 days | From $12.99 / 3 days | 4G/5G | N/A |
Best eSIM for Thailand: Best eSIM Plans Reviewed
Traveling to Thailand in 2026? Don’t forget a worthy eSIM companion to stay connected and not pay head-spinning roaming charges. These five stick out for their low prices, reliability, and flexible Thai eSIM plans:
1. Ubigi
Pros
- Unlimited plans available
- Affordable eSIM
- Impressive speeds
- Smart IP feature
- No limits on data sharing
Con
- No local phone number
Our #1 pick, Ubigi, is the best eSIM you can use in Asia. Similarly, it’s the top option for your travel to Thailand, with plans starting at only $3.9 for 1 GB of data for 7 days. Ubigi even has monthly and annual plans, with renewable data for frequent travelers. Unlimited data is still just $22.9 for 7 days, and enjoy 4G and 5G connectivity on Thailand’s top networks, AIS and True, for the widest coverage wherever you go.
If you’re staying for a month, it’ll cost you $57.9 for a limitless experience. Having tested it in Bangkok and Phuket, we can once again confirm its exceptional coverage and reliable 5G speed. Ubigi is one of the fastest eSIM options for streaming, downloading, video calling, and gaming. It’s also secure thanks to added encryption.
We like Ubigi’s activation via the QR code, after which your plan starts when you arrive at your destination. What you see is what you pay, so there are no hidden fees or roaming charges. Ubigi allows data sharing and puts no restrictions, so even a group of travelers can share one eSIM.
Traveling doesn’t have to mean slowing down online. Ubigi lets you connect with the internet exactly as if you were at home, wherever you are. While roaming through your usual mobile operator keeps your IP from home and local Wi-Fi can be hit-or-miss, Ubigi gives you flexibility: enjoy a fast, secure mobile connection with a home-country IP, or switch to a local IP for a true local experience.
If you have an eSIM-compatible laptop, Ubigi supports many from Acer, Asus, Dell, HP, and Lenovo. It lacks local Thai phone numbers, but with over a dozen distinct eSIM plans for Thailand at affordable prices, it’s not a downside. All can be discounted by 10% with the GIZMODO promo code for added savings.
2. Saily
Pros
- Many security features
- Airport lounge access in the app
- Affordable starting price
- Data saver (ad blocker)
- Refunds are possible
Con
- Higher cost for long stays
Saily is a low-cost eSIM for Thailand with plans starting at $2.99 for 1 GB of data for 7 days. However, 3 GB, 5 GB, 10 GB, 20 GB, and unlimited plans are also available for 30 days. Our favorite remains the 20 GB plan for $19.99, but if you want to go unlimited, prices start at $18.99 for 5 days, good for a quick stay.
Saily’s performance in Thailand is exemplary. 4G and 5G coverage is consistent, and smooth streaming, VoIP calling, and gaming are guaranteed. Saily’s cybersecurity roots can be seen from a mile away, with features like virtual locations, a data saver (ad blocker), and a tool that blocks malicious URLs.
New in 2026: Saily now sells airport lounge access and fast-track security passes directly inside the app, with no subscription required. On a long layover at Suvarnabhumi, that’s worth considerably more than another gigabyte of data. Frequent flyers can also take Saily Ultra, a monthly plan bundling unlimited global data, lounge access at over 1,000 airports, and the full Nord Security suite including NordVPN. The company was named “Rising Star” at the MVNOs World Congress in Amsterdam in June 2026, and the run of updates behind that award is easy to see in the app.
Better yet, Saily allows refunds if you face activation issues or this eSIM for Thailand simply isn’t working for you. Its 24/7 live chat support is responsive, and you get apps for iOS and Android for quicker activation. Overall, Saily is the most complete option here, except for slightly higher prices on longer stays. Current offers are listed on our Saily promo code page.
Tip: Through Gizmodo, you can save 15% on all Saily plans by using the promo code GIZMODO at checkout.
3. Holafly
Pros
- Unparalleled speeds
- Cheap for short stays
- 24/7 live chat support
- Automatic activation
Cons
- 500 MB/day hotspot limit
- Expensive for long stays
Holafly is among the most popular eSIMs for global travelers. If Thailand is on your map, this eSIM has unlimited data, which still costs $3.90 for a day. Its reliable speeds and coverage make it among the speediest eSIMs, which we used primarily for video communication and gaming sessions. Holafly relies mainly on 5G.
However, even 4G connections were fast in our tests. Holafly is affordable for short stays, and while its price per day of unlimited data goes down for longer stays, it’s still not cheap. 7 days cost $27.30, while 15 days cost $50.90. For a month, you’ll spend $74.90, nearly $17 more than Ubigi’s $57.90 for the same thing.
Holafly permits data sharing, but it’s limited to 500 MB per day. That cap hasn’t moved in 2026. It’s compensated with 24/7 customer support through live chat and an automatic activation when you reach your destination. Holafly is a great all-arounder with tiny caveats, easily forgotten when you see how fast and reliable it is.
4. Airalo
Pros
- Exclusive 5G coverage
- Cheap unlimited data
- Data usage tracking
Cons
- Subpar customer support
- No local phone number
Airalo is one of the few eSIMs for Thailand with exclusive 5G coverage from AIS. During our 2026 tests, Airalo displayed an impressive level of performance, offering coverage even on many Thai islands. Best of all, activation was smooth, and Airalo allowed us to top up our eSIM with data when we ran out.
The eSIM starts at $4 for 1 GB of data for 3 days. We used its 10 GB plan for 7 days for $9, which is still a perfect balance of price and data allowance. Airalo offers unlimited data for as low as $10.50 for 3 days. For 7 days, you’ll spend $24, which still isn’t that expensive. On top of that, you can share data limitlessly.
If you’re on a limited plan, Airalo will track your usage and alert you if you’re close to the limit. Airalo also has a regional Asian plan, which covers Thailand, but lacks local phone numbers. On that note, Airalo’s customer support remains the slowest of the five in 2026.
5. Jetpac
Pros
- Free data for essential apps
- Good value for money
- Optional lounge access
Cons
- Not the fastest eSIM
- Cheaper only for short stays
Jetpac is a unique eSIM for Thailand, blending excellent value for money and subscription plans for travelers. It starts at $4 for 1 GB of data for 4 days, but the 3 GB plan for 7 days remains our pick for short stays. Meanwhile, the 30 GB plan at $23.99 is also great, and if you need more, you can go unlimited.
In that case, Jetpac is only $12.99 for 3 days; ideal for a short trip. Regardless of the plan, you get free data for WhatsApp Chat, Google Maps, Uber, and Grab, all the essentials when you go abroad. Lounge access is bought separately, although you can get it as part of the Jetpro plan with 100+ locations supported.
Jetpac uses 4G and 5G data and is reliable, although not as speedy as Ubigi. That gap widened in our 2026 retest. Its support may not be the fastest either, but it’s knowledgeable and willing to help. Jetpac’s apps offer quick and easy activation, and you can purchase Jetpac using Google Pay, Apple Pay, or your credit card, making it available worldwide.
The Final Verdict: Best eSIM for Thailand
Traveling abroad doesn’t have to cut you off from the internet and leave you stranded. To avoid horror, use an eSIM for Thailand that you can trust, such as Ubigi, Saily, Holafly, Airalo, or Jetpac. We tested many, but these five were the most reliable and offered the best value for money in our 2026 retest.
Speed, coverage, plan flexibility, ease of use, and support. Ubigi checks all the right boxes and even has a handy 10% discount for first purchases with our GIZMODO promo code. Saily is the one that has moved fastest this year, adding lounge access and travel perks on top of its security tools. If neither scratches the itch, you have three more options, all activated in a minute and working in Thailand without issues.
Frequently Asked Questions
What is the best eSIM for Thailand?
Ubigi is the best eSIM for Thailand overall. It runs on both AIS and True, the country’s two strongest networks, starts at $3.90 for 1 GB over 7 days, and offers unlimited data from $22.90 for 7 days, with 10% off using the GIZMODO code. Saily is the best alternative, with security tools and travel perks on every plan.
Why use an eSIM in Thailand?
Using your domestic SIM card abroad means roaming, which costs more and delivers less reliability. An eSIM for Thailand connects you to a local network at local rates, so you avoid bill shock entirely. You buy and activate it before your trip, your original SIM stays in the phone, and you are online the moment you land.
What is the cheapest eSIM for Thailand?
Saily has the cheapest entry plan at $2.99 for 1 GB over 7 days. For unlimited data, Airalo is the cheapest short option at $10.50 for 3 days, while Ubigi is the cheapest for a full month at $57.90, undercutting Holafly’s $74.90.
Which networks do Thailand eSIMs use?
Ubigi connects to both AIS and True, which gives it the widest coverage across the mainland and the islands. Airalo runs on AIS with 5G. Holafly and Jetpac use a mix of 4G and 5G local partners. More networks means your phone can switch to whichever signal is stronger.
Can I use an eSIM for Thailand in other Asian countries?
Not if you buy a Thailand-only plan. However, our recommended picks all offer regional Asia plans covering at least 15 countries, including Thailand, Japan, China, Hong Kong and Singapore. Airalo’s regional plan has no unlimited option, so we recommend Ubigi for the best regional coverage and unlimited data at the lowest price.
Do I need a Thai phone number?
Most travelers do not. None of the five providers here offers a local Thai number, and Thailand runs on messaging apps, so WhatsApp, Line and Messenger cover calls and texts over your eSIM data. Keep your home SIM active in the second slot to receive verification codes on your usual number.