Why Roafly is our overall fixed-data pick for Thailand
Thailand produces a very close race around 10GB. Roafly and Nomad both charge $10 for 10GB, compared with $10.99 at Saily and $11 at Airalo.
Once prices are that close, secondary differences deserve more weight. Roafly lists TrueMove H and dtac and supports hotspot/tethering across the full purchased allowance, with no separate hotspot quota. That is useful when the same plan needs to cover normal phone use plus occasional laptop or second-device tethering.
The smallest package is not where Roafly leads. Its 1GB option costs $3.90, while Saily comes in at $2.99. But a starting price can become a weak comparison point if you actually expect to use several gigabytes during the trip.
Roafly also covers 200+ destinations, which matters more for someone continuing through Asia or planning future trips than it does for a Thailand-only purchase.
You can compare Roafly’s current Thailand eSIM packages before departure and choose the allowance that fits the trip rather than buying around a teaser starting price.
Nomad: the closest fixed-data rival
Nomad is the strongest direct challenger at the 10GB level because it also charges $10 for 10GB.
Its fixed-data product lists AIS and dtac, giving it a different disclosed network combination from Roafly. That matters in Thailand because independent network studies split their awards across AIS, TrueMove H and dtac rather than pointing to operator as the unquestioned winner.
Nomad also sells a 10-day unlimited-style plan for $16, the lowest verified unlimited price in this comparison. That product is more relevant to genuinely heavy-data users than to someone who already knows a 10GB allowance will be enough.
Saily: cheapest for a very light trip
Saily’s strongest case is simple: 1GB costs $2.99, the lowest verified entry price here.
That can work for a short stop where mobile data is mainly reserved for messaging, maps and transport while hotels and cafés handle most heavier usage.
The advantage narrows quickly at the practical larger tier. Saily charges $10.99 for 10GB, putting it slightly above Roafly and Nomad. Its local Thailand network was not specified in the owner-verified information used for this comparison, so there is less network transparency to use as a tie-breaker.
Airalo: AIS and True disclosed, at a slightly higher fixed price
Airalo charges $4 for 1GB and $11 for 10GB. Those prices do not lead the table, but its disclosure of AIS and True gives it a relevant network combination.
Its 10-day unlimited-style option costs $31, considerably more than Nomad’s $16 offer. That makes Airalo harder to justify on price alone in this particular comparison, although its network combination may still appeal to someone who specifically wants AIS and True listed on the same product.
Roamless: pay for what you use
Roamless takes a different approach rather than selling another conventional Thailand bundle. Its verified rate is $2.45 per GB, with AIS, True and dtac listed.
That structure can make sense when usage is low or hard to predict. Someone who uses 1GB would spend $2.45; someone who reaches 10GB would spend $24.50, making the PAYG model much less competitive against Roafly or Nomad at heavier usage.
The three listed network names are also noteworthy, but they should be read as disclosed access. They do not prove automatic switching, priority, or guaranteed access to every operator at every location.
Holafly: a different product model
Holafly’s verified Thailand offer in this comparison is built around unlimited-style data rather than fixed 1GB or 10GB packages.
Ten days costs $36.50, with True and dtac listed. That is substantially above Nomad’s verified 10-day unlimited price and also far above the fixed-data options if 10GB is already sufficient for the trip.
Its value therefore depends on whether you actually need the unlimited model, not on being inherently better than a capped plan.
Why the local network matters in Thailand
Thailand is a good example of why national network statistic should not decide an eSIM purchase.
Opensignal’s June 2025 Thailand Mobile Network Experience report named AIS the most awarded operator overall, with five outright wins. AIS also won Coverage Experience outright with a score of 8.5 out of 10, giving it the strongest result in that specific geographic-coverage metric.
nPerf’s 2025 Thailand mobile awards, however, rank TrueMove H first for overall mobile performance. That points in a different direction because nPerf’s composite assessment and Opensignal’s individual experience metrics are not measuring exactly the same thing.
That split is useful rather than contradictory. AIS access is a legitimate positive for Nomad and Airalo, particularly when coverage is part of the decision, while TrueMove H has strong independent performance evidence behind Roafly’s disclosed network setup.
True and dtac also need to be interpreted carefully. True Corporation states that its One Network integration between True and dtac was completed in 2025, bringing their network infrastructure into integrated network. Roafly listing TrueMove H and dtac is therefore useful disclosure, but it should not be marketed as two completely independent nationwide operator footprints in the way AIS versus True represents a more distinct network choice.
Local signal can still change by island, road, building and congestion level. None of these measurements guarantees the strongest connection at particular resort, ferry pier or mountain route.
Fixed data or unlimited for a Thailand trip?
The numbers make this less complicated than the word “unlimited” can suggest.
Roafly offers 10GB for $10. Nomad’s verified 10-day unlimited-style plan costs $16, while Airalo charges $31 and Holafly $36.50 for 10 days.
If 10GB comfortably covers your expected maps, messaging, ride-hailing, browsing and social use, paying more simply to remove the visible data cap may not add much practical value. Roafly also allows hotspot use across its purchased allowance, which can make a fixed package more useful for laptop work.
The unlimited branch becomes more interesting for sustained video streaming, frequent large uploads or unusually heavy work use. All three unlimited products in this comparison are subject to fair-use policies. Detailed throttling, speed-management and hotspot terms were not verified consistently enough here to present any of them as guaranteed unrestricted full-speed data.
Read the current fair-use and tethering terms before purchasing an unlimited plan, especially if hotspot use is central to the trip.
What about a local Thai SIM or operator eSIM?
Buying directly from a Thai operator can still make sense when you specifically want a local phone number, an operator-direct tourist package or another feature that a travel-data eSIM does not provide.
That is a broader internet-access decision rather than the main focus of this provider comparison. Our guide to How to Get Internet in Thailand covers local SIMs, eSIMs and other connection options in more detail.
The appeal of arranging a travel eSIM before departure is mostly convenience: the data plan can be installed in advance, while your existing physical SIM setup can remain untouched where your phone supports it.
Which Thailand eSIM should you choose?
Roafly is our overall fixed-data choice. At $10 for 10GB, it matches the lowest comparable fixed package verified here. Its TrueMove H/dtac disclosure is backed by strong network-performance evidence, and full-allowance hotspot support adds a useful practical advantage.
Saily makes more sense when 1GB is genuinely enough. Its $2.99 entry package is the cheapest verified small allowance.
Nomad deserves the closest comparison with Roafly. It matches the $10 price for 10GB, lists AIS and dtac for fixed data, and has the cheapest verified 10-day unlimited-style price at $16.
Roamless is the more flexible option for low or unpredictable PAYG use. Airalo gives you an AIS + True disclosure but at slightly higher fixed prices, while Holafly sits at the expensive end of the 10-day unlimited comparison.
Thailand does not have provider that wins every package size and every network metric. At the practical fixed-data level, Roafly gives the strongest combination here of competitive price, disclosed local-network access and verified tethering terms.
Disclosure: Roafly publishes this guide and is included in the comparison.
