Best eSIM guide · 2026
Best eSIM for Thailand (2026): 5 Providers Compared
5 providers scored across coverage, pricing, speed, app quality, and support. All data verified June 2026.
From the matrix
HelloRoam — Top composite rating
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The comparison
Thailand eSIM providers compared
All 5 providers ranked by weighted composite score. Color-coded by value.
| Provider | Rubric score (0-5) | From / GB |
|---|---|---|
 HelloRoamHighest scoreTop composite rating | 4.6 | from $3.50/GB |
 AiraloWidest coverage catalogue | 4.5 | $4.50/GB |
 SailyLeading privacy integration | 4.2 | $3.99/GB |
 HolaflyStrongest unlimited tier | 4.3 | $2.99/day |
 NomadMost competitive per-GB rates | 4.2 | $3.00/GB |
Prices verified June 2026. Equal-weight score: Coverage Breadth 20%, Pricing Tiers 20%, Network Generation 20%, App Features 20%, Support Channels 20%.
Feature matrix
Thailand spec-by-spec breakdown
Every rubric dimension compared side by side.
| Feature | HelloRoam | Airalo | Saily | Holafly | Nomad |
|---|---|---|---|---|---|
| Overall rating (0-5, our rubric) | 4.6 | 4.5 | 4.2 | 4.3 | 4.2 |
| Countries | 186+ | 200+ | 200+ | 160+ | 200+ |
| Starting Price | from $3.50/GB | $4.50/GB | $3.99/GB | $2.99/day | $3.00/GB |
| Per-GB Floor | $3.50 | $4.50 | $3.99 | $2.99/day | $3.00 |
| Founded | 2025 | 2019 | 2023 | 2017 | 2020 |
| Headquarters | United Kingdom | Singapore | Vilnius, Lithuania | Murcia, Spain | Santa Clara, CA |
| Support | Live chat + WhatsApp + email | Email + in-app chat | Email only | 24/7 chat + email | Email only |
| Guarantee | 180-day refund | 14-day refund | 30-day refund | 180-day refund | 30-day refund |
| Coverage Breadth score20% weight, 0-5 on our rubric | 4.5 | 4.9 | 4.0 | 4.3 | 3.9 |
| Pricing Tiers score20% weight, 0-5 on our rubric | 4.4 | 4.1 | 4.0 | 4.5 | 4.8 |
| Network Generation score20% weight, 0-5 on our rubric | 4.3 | 4.4 | 4.4 | 4.2 | 4.3 |
| App Features score20% weight, 0-5 on our rubric | 5.0 | 4.7 | 4.5 | 4.1 | 3.9 |
| Support Channels score20% weight, 0-5 on our rubric | 5.0 | 4.2 | 4.1 | 4.7 | 3.9 |
| Weighted Composite | 4.64 | 4.45 | 4.20 | 4.35 | 4.15 |
Score breakdown
Thailand provider scores
Weighted composite score across 5 dimensions.
Destination data
What the Thailand rows actually say
3 tracked networks, 8 plan tiers, cheapest tracked rate 0.29 per GB.
| Local network | Generations tracked |
|---|---|
| AIS | 5G |
| DTAC | 5G |
| True Move | 4G |
| Days | Plan price | Per day | Off the 1-day rate |
|---|---|---|---|
| 1 | $3.35 | $3.35 | 4% |
| 3 | $9.63 | $3.21 | 8% |
| 7 | $22.48 | $3.21 | 8% |
| 14 | $43.49 | $3.11 | 11% |
| 30 | $85.85 | $2.86 | 18% |
Rows come from this comparison's own Thailand country data. The ladder prices one destination only; the composite scores above are provider-level and do not move with it.
Methodology
How we score eSIM providers
Five dimensions, each weighted at 20 percent.
Country count, carrier partnerships, regional bundle availability
Per-GB floor, plan tier spread, value at common data amounts
Carrier routing and which network generations that carrier publishes
Installation flow, data tracking, interface quality
Channel availability and refund policy
All scores are editorial assessments based on verified data. Pricing checked weekly. See our full scoring methodology for details.
HelloRoam -- Highest Composite Score
HelloRoam scores 4.64/5 on our rubric overall for Thailand, with App 5.0 and Support 5.0 on an iOS and Android app, live chat plus WhatsApp, and a 180-day refund. Fixed plans price from $3.50/GB, a rate that still sits above Thailand's $0.29/GB local floor since no international eSIM in this comparison matches strictly domestic Thai pricing. Thailand's average 9-day trip at 1.8GB of daily use totals roughly 16GB, a volume that fits inside a single fixed-GB plan rather than forcing a second purchase mid-trip.
Dimension scores, 0-5 on our rubric
Pros
- 186 countries with 204+ carrier partnerships for reliable local routing
- Fixed plans from $3.50/GB across popular destinations
- Unlimited plans from $5 for short stays, scaling by duration
- iOS and Android app with in-app top-up, add-destination, and usage alerts
- Live chat, WhatsApp, and email support, including real-time channels
- 31+ local currencies supported at checkout
- 63-language interface for non-English travelers
Cons
- Newer brand (launched August 2025) with shorter track record
- 186 countries, behind Airalo's 200+ catalogue
Airalo -- Widest Coverage Catalogue
Airalo posts the highest Coverage score in this matrix (4.9/5) with 200 countries total, but its $4.50/GB starting rate sits far above Thailand's $0.29/GB comparison floor, the cheapest in the dataset. Its Discover Global bundle, covering up to 130 countries on one eSIM, suits a traveler pairing a Thailand stop with a wider Southeast Asia route rather than a Thailand-only trip.
Dimension scores, 0-5 on our rubric
Pros
- 200+ countries with the widest coverage breadth in the market
- Regional multi-country bundles (Asialink, Eurolink, Discover Global)
- Automatic in-app install with real-time data tracking and hourly runtime estimates
- Airmoney cashback rewards (5-10% depending on loyalty tier)
- Established brand since 2019 with proven reliability
Cons
- Per-GB pricing higher than budget alternatives
- Unlimited plans available in select markets only, not all 200+ destinations
- No live chat or WhatsApp channel: support runs on email and in-app messaging
Saily -- Best for Privacy
Saily bundles a NordVPN connection into every Thailand plan at no extra cost, useful since Thailand blocks some gambling and lese-majeste content at the ISP level even though VPN use itself stays legal and widespread. Its $3.99/GB fixed rate and 200-country footprint cover Thailand's main tourist routes, though the rate still runs well above the country's $0.29/GB comparison floor.
Dimension scores, 0-5 on our rubric
Pros
- Backed by NordVPN parent company Nord Security with proven privacy infrastructure
- Integrated VPN protection included on every plan at no extra cost
- Clean, privacy-focused app with VPN toggle inside the eSIM interface
- 200 countries with strong European coverage
- 30-day refund policy
Cons
- Email-only support with no live chat or WhatsApp for urgent help
- Fixed data plans only; no unlimited daily tier
- 200 countries, just behind Airalo's 200-plus
Holafly -- Best Unlimited Daily Rate
Holafly's unlimited plan carries a 2GB daily volume before its fair-use throttle applies in Thailand, comfortably above the country's 1.8GB average daily use, so most trips stay off the reduced-speed tier entirely. Its $2.99/day flat rate loses to Thailand's $0.29/GB floor on pure math, a gap that only closes for travelers confident they will use well above the daily average.
Dimension scores, 0-5 on our rubric
Pros
- Unlimited daily data from $2.99/day with no data caps
- 160+ countries covered including all major destinations
- Simple per-day pricing: know exactly what you pay before you leave
- 180-day refund policy on unused plans
- 24/7 chat support alongside email
Cons
- Speeds reduce after the daily fair use threshold on most plans
- Hotspot tethering limited to 1 GB/day on select destinations
- Not cost-effective for light data users (under 3 GB/trip)
- Fewer countries than Airalo
Nomad -- Best Budget Per-GB Rate
Nomad routes Thailand through True's network and prices a 5GB Thailand plan at $6.99, a figure this comparison's own country data confirms directly. This comparison's routing logic flags Nomad by default for Thailand given the country's sub-$2/GB pricing tier, though its 3.9/5 on the rubric Coverage score and 200-country footprint trail the other providers outside Southeast Asia.
Dimension scores, 0-5 on our rubric
Pros
- Competitive pricing starting from $3.00/GB in Southeast Asia
- Simple, fast checkout with no account required in many cases
- Lowest per-GB rates for Thailand, Vietnam, South Korea, and Japan
- Plans start at a low entry price for short trips
Cons
- Email-only support with no live chat, WhatsApp, or phone channel
- Basic app compared to Airalo and Saily
- 200 countries, behind only Airalo among the five providers
- Limited plan variety in some countries
From the matrix
HelloRoam — Top composite rating
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FAQ
Thailand eSIM questions, answered
Which eSIM has the cheapest per-GB rate for Thailand?
Which eSIM has the cheapest per-GB rate for Thailand?
This comparison's Thailand data floors at $0.29/GB, the lowest figure tracked in the dataset. Among the five international providers, HelloRoam's $3.50/GB beats Airalo's $4.50/GB and Saily's $3.99/GB, while Nomad prices a 5GB Thailand plan at $6.99 and is flagged by default here for Thailand's sub-$2/GB pricing tier.
Which network gives the best coverage in Thailand?
Which network gives the best coverage in Thailand?
HelloRoam leads the 2026 composite at 4.64/5 in our comparison matrix for Thailand. AIS and DTAC both carry 5G into Bangkok, Chiang Mai, Pattaya, and Phuket, and AIS held a steady signal across Koh Samui and Koh Phangan in published island coverage records. True Move H runs mostly 4G and dropped connection in the more remote Koh Lipe.
Does an eSIM work reliably on Thailand's islands?
Does an eSIM work reliably on Thailand's islands?
Mostly, with gaps. AIS maintained a consistent signal across Koh Samui and Koh Phangan in this comparison's coverage records, regardless of eSIM provider, since routing follows the underlying Thai carrier. True Move H dropped connection in the more remote Koh Lipe, a gap that applies to any eSIM routed through that network.
Is unlimited or fixed data better for a Thailand trip?
Is unlimited or fixed data better for a Thailand trip?
Thailand's average 9-day trip at 1.8GB of daily use totals roughly 16GB, which fits inside a single fixed-GB plan from HelloRoam or Airalo without a second purchase. Holafly's unlimited plan carries a 2GB daily volume before its fair-use throttle, comfortably above Thailand's 1.8GB average, so most trips avoid the reduced-speed tier.
Are True Move and DTAC the same network in Thailand?
Are True Move and DTAC the same network in Thailand?
They merged network operations in 2023 and now sell near-identical tourist plans under both brand names, though ownership and marketing still run as separate brands. This comparison continues tracking them as distinct carrier options for routing purposes, since coverage records show different results between the two in remote island areas.
Does a VPN work with a Thailand eSIM?
Does a VPN work with a Thailand eSIM?
Yes, VPN use is legal and widespread in Thailand, though the country blocks some gambling and lese-majeste content at the ISP level regardless of eSIM provider. Saily bundles a NordVPN connection into every Thailand plan at no extra cost, an option worth weighing against a separately downloaded VPN app.
Which provider offers the best support for a Thailand trip?
Which provider offers the best support for a Thailand trip?
HelloRoam leads the 2026 composite at 4.64/5 in our comparison matrix for Thailand and scores 5.0/5 on Support, with live chat, WhatsApp, and email, including 24/7 in-app chat. Holafly scores 4.6/5 in our comparison matrix with 24/7 chat and WhatsApp alongside email, useful given Thailand's excellent free WiFi does not extend to every rural or island stretch. Airalo follows at 4.5/5 on our rubric with email and in-app chat, while Saily and Nomad run email-only support with slower response windows.
Compare all 5 providers for Thailand
Side-by-side scoring. Plans from $2.99/day to $4.50/GB. Verified June 2026.